| Offers 47 equations for HP Prime's Solver App. Just run the eqlib program, select the category that you are interested in, and select the equation within that category and you are off and running. Categories include: Geometry (areas, volumes, surface areas), Finance (monthly loans, sales tax, break-even), Temperature Conversion (Fahrenheit to and from Celsius), Physics: Problems of Motion (linear distance, circular motion, pendulums, terminal & escape velocity), Sound (speed of sound, Doppler effect, loudness), Optics (Lens and Snell equations, spherical refraction), Electronics (2 resistors series and parallel, thermal noise, Ohm's Law), Astronomy (parallax, luminosity, Kepler's 3rd Law, time dilation), Great Circle Calculations, Angle of Incidence Calculations, Gases (Ideal and Boyle's Gas Laws, heat capacity, air density, isothermal expansion), and Fluids (depth pressure, fluid flow, Bernoulli's Equation). |
Educational App allowing one dimensional kinematics problems to be entered, solved using the standard kinematics formulae, and visualized as vertical or horizontal motion problems via a simple graphical representation. Includes PDF documentation.
Calculates the structural number with the AASHTO equation for the pavement course.
Given any three of the five variables in the acceleration equation, the other two variables are calculated. As with all of the author's spreadsheets, the blue text cells are the input data and the red text cells are the calculated output data.
Lists various acids, giving you the name based on the chemical formula and vice versa.
Given the right ascension (α) and declination (δ) of two stars of the same epoch (J2000.0 is the most current), calculates the distance between the stars.
Program for the piping area, designed to calculate the friction factor in any flow regime (laminar, turbulent, transition). For laminar flow with Re<#00 the program uses the friction factor equation for laminar regime(fd/Re). For flow with Re> 2300 the program uses the Colebrook-White equation (1939) which covers the entire transitional and turbulent regime.
Formulas for calculating areas and volumes.
Program for solving trusses using matrices.
Calculates structural analysis of trusses by the matrix method.
Astronomy program with many built-in features. For firmware 10077 or higher.
Determines some physical and thermodynamic properties of air at different altitudes. Uses the international units system (SI) and considers dry air. Altitude range permitted is from -5,000 to 20,000 meters; in this range air is considered ideal gas.
Retrieves data about our solar system planets, including our dwarf planet, Pluto, presenting you with a choose menu which will present a screen of all the data for a planet. It also has a routine to pull out a specific data point for calculations. Data available are name, radius (km), mass (kg), gravity (m/s^2), density (g/cm^3), axial tilt (°), period (days), and number of moons.
Simple command-line program to determine the molar mass (formula mass, molecular weight) of a compound. It is a reworking of %8779%.
Reads in velocity, altitude, and length then exports Reynolds number and wall spacing for a yplus of 1. Based on log law of the wall.
A powerful chemical Equation Balancer that can balance a chemical equation in a fraction of a second despite the complexity of the equation. It returns all possible solutions to an equation which is not readily possible using the paper and pencil technique.
Allows you to solve typical problems of the Quantitative Chemical Analysis course: activity coefficients, acid-base equilibria, acid-base titrations and EDTA titrations.
In two dimensions, determines the maximum and minimum tension, from two measurements of the normal and tangential tension on two right angles.
Calculates friction using the Colebrook-White equation using the Newton Raphson method essential for fluid course I and II, showing the table of iterations.
Given Mass, Height, and Time, I (lbs-ft^2) and Io (lbs-ft^2) are calculated. As with all of the author's spreadsheets, the blue text cells are the input data and the red text cells are the calculated output data.
Based on the Javascript by William J. Devenport (and modified by Adam Ford to include Fanno Flow and Rayleigh Flow).
Calculates the support moments of a continuous beam having different moments of inertia (Mb for a two-field span, Mb and Mc for a three-field beam). Several load cases for the same beam can be performed. Accepted are trapezoidal- and point loads, split in dead- and live load.
Used to study the frequency domain response of control systems consisting of a process and a controller. Open loop response with and without controller and resulting closed loop response (unity feedback loop) can be determined / compared. The app takes as input the transfer function of a process as well as the settings of a (PID) controller. It includes a ‘Bode plot’ which combines magnitude and phase plots on the same screen, indicating real frequency (log scale) and magnitude (log or dB scale) values, and not the logarithm of these values, although logarithmic scales are used. This Bode plot does not rely on the built in HP Prime plot mechanism but is programmed from scratch, including mouse movement and key press detection and custom soft key menus to accomplish functionality that would not be possible otherwise. The app also draws Nyquist and Nichols plots. Includes PDF documentation.
Set the number of digits, enter the position of the resistances or impedances in the network, and then enter the data for the wye network and the delta network, and it will give the result in both rectangular and polar forms.
Calculates AASHTO T-191 density control using the sand cone method.
Allows you to calculate the Dew Point (temperature, pressure and composition of the first drop created in a gas mixture) and Bubble Point (temperature, pressure and composition of the first bubble created in a liquid) of a mixture of "N" number of components. To make the calculation, the Secant Method is used to find the roots. You can also choose between using Antoine or McWilliams (if it's a hydrocarbons' mixture) parameters.
Does calculations for Normal Strap (Bisection Method - Secant Method), Critical Strap (Bisection Method - Secant Method), Flows (Maning equation), and Maximum Efficiency (Maning Equation)
Calculates the inner diameter of a pipeline using 9 calculation models (Theoretic, Weimouth, Panhandle-A, Panhandle-B, IGT, Mueller, Fritzsche, AGA-A, AGA-B). The listed calculation models are specific for flowing real gases in long ducts under approximately constant temperature (Real Fluid Isothermal Flow). Models include the gravitational energy term, allowing better results for ducts through mountain regions.
Performs the design of rigid pavements using the AASHTO-93 methodology.
Calculates M0, Magnitude and energy of a quake, and compares quakes. All of the formulae here can be applied to earthquakes, many can also be applied to other planets.
Ever wondered at which speed you rotate on your location on earth? Find out with this application. For different latitudes on the planet you can find the speed.
Program for the Thermodynamics course. Contains the equations of VAN DER WALLS-REDLICH KWOONG-R.K SOAVE-PENG ROBINSON.
Finds for a date given as yyyy.mmdd the next dates for full moon and new moon and checks for the occurence of a lunar and/or solar eclipse. If positive, some characteristics like kind of eclipse, magnitude and size of shadow in Earth radii ( E.R. ) are calculated.
Electrical and electronic circuit solver that solves AC or DC circuits with linear and non-linear elements. The program implements a full graphic interface to edit circuits, with useful functionality such as copy/paste, undo/redo, moving and rotation of parts, etc. It can solve both AC and DC circuits with both linear and non-linear elements. The non-linear elements supported include: BJTs, MOSFETS, diodes, LEDs, and zeners. The results of the solution are displayed in the circuit editor itself.
User inputs the semimajor axis and eccentricity of an elliptical orbit. The code finds distances for periapsis, apoapsis, semiminor axis, semilatus rectum, focal parameter, circumference of orbit, and the separation between the primary focus and the orbiting object where the latter has its average speed in orbit relative to the former, and, finally, the true anomalies for this average speed.
Calculates sound emissions from compressed air pipes.
A compilation of equations used in Electrical Engineering. The program will pass the "selected topic" to the Prime Solver App. Handles Ohm's law, circuit analysis, passive filters, delta/wye conversions, Wheatstone bridges, transformers, and more. Includes PDF documentation.
Epidemic model SIR. Inspired by a recent video on Numberphile I have coded the well-known SIR-model of an epidemic.
Extensive library of equations that can be used in a course in Fiber Optics. The variables may vary slightly, but a variable description is provided in each topics before the program is transferred to the Solver. There are a total of ~130 variables all listed with a description. If you are familiar with Prime programming, you can append your own equations to expand the library. Includes comprehensive PDF documentation.
Designed to monitor the pressure (at the junction) and the flow rates in the parallel ducts, when the flow control valve is closed. Calculates API oil density (lb/ft^3), viscosity [dynamic (cP) and kinematic (cS)] of oil by Beggs & Robinson, variations in flow rates (ft^3/s), velocity (ft/s), friction factors and Reynolds numbers in the ducts, when the valve is closed, the pressure variation (psig) at the junction points when the valve is closed, and the archive comes with an image of the arrangement of the pipes with the valve.
Finds for the differential equation of a forced oscillation given as m*d2y/dt2 + d*dy/dt + c*y = 0*cos(omega*t) or m*d2y/dt2 + d*dy/dt + c*y = 0*sin(omega*t) or a combination of both the exact and approximate solution dependent on preset initial conditions t0, y0(t0), y'0(t0) and graphs the result.
This program finds the formula mass (in grams/mole) of any chemical compound typed into the calculator using standard symbolic notation for elements (e.g. "H", "Ca", "O", etc.).
This program finds the formula mass (in grams/mole) of any chemical compound typed into the calculator using standard symbolic notation for elements (e.g. "H", "Ca", "O", etc.). This improved version fixes some serious problems in the old version (
Finds by means of successive calculation the member forces S and their components Sx, Sy, Sz in a 2D- or 3D-truss.
Program designed to calculate the maximum unsupported length for pipelines in operation (distributed or concentrated load). Calculates the length between the supports as a function of the suggested vertical deflection. Only for tubes with SMYS from 35 ksi. Output information in English units.
Allows you to calculate Darcy's friction factor according to the equations of Swamee-Jain, Haaland, Chen and Colebrook-White. Includes comprehensive PDF documentation.
Some programs written for Fugasity utilizing PR, 2-TV, and LK also for mixtures as well as fugasity applied to Gibbs free energy.
Solves coordinates for geocaching.
A collection of useful geodesy routines. Not for navigational use (estimated 14% error).
Converts between coordinates (UTM, sexagesimal or decimal degrees) of the WGS84 system to the corresponding coordinates (GAUSS-KRÜGER or degrees) in the POTSDAM system and vice versa, and finds the number of the German "Messtischblatt" including the marking of the 1/64 quadrant (8*8 subsquares).
Converts UTM coordinates to geodetic coordinates and vice versa.
Solves the one-dimensional heat conduction equation by means of the Forward-Difference method, the Backward-Difference method and the Crank-Nicolson method.
Calculates three heat properties of liquid water based on its temperature: specific heat capacity of water (ratio of heat added or removed from an object to cause a temperature change), measured in J/(g*°C), latent heat of evaporation, measured in kJ/kg, and latent heat of fusion, measured in kJ/kg. The program accepts three measurements for liquid water, Fahrenheit (°F), Celsius (°C), or Kelvin (K).
Implements simple geometric solutions for spheres, taking no account of refraction. It includes functions for distance to horizon at a given height, and inverse functions.
Performs piping engineering (long ducts) calculations for the hydrostatic testing phase: the volume of water required to fill the test section (gal_US), the volume of water required for the pressure test (gal_US), and the amount of pressure change for a change in test water temperature (psig/ºF).
Calculates the increase in the volumetric flow rate of a long duct using parallel piping (only for incompressible flow).
Calculates the value of a resistor R to power an LED. Data entered are the voltage V of the power supply you intend to use (for example, 12 V), the forward voltage Vf of the LED (for example, 3.3 V), and the forward current If of the LED (for example, 0.02 A or 20 mA). In this case, the program will return RC5 ohms. The next commercial value is 470 ohms.
Diagram of the spectrum of visible light.
Illustrates the Moon, the Earth, the Moon's orbit around the Earth, and animates the light-distance of the Moon from the Earth.
Calculates the course direction and distance in miles given two pairs of latitude (north/south) and longitude (east/west).
Calculates and draws the vibration mode shapes for a lumped MDOF elastic system.
Determines when the next start point of a desired phase of the Earth's moon will occur given a month and year.
Calculates moon phase for a given date and then displays it adding some random speckles. Detailed instructions on how to install and use in English and Spanish.
A curvefit model for "average" population 1 main sequence stars. User enters the star's mass, all other parameters are calculated and displayed.
Program for the area of piping engineering, construction and assembly of pipelines. Calculates the smallest natural bending radius that can be used without excessive stress. Calculates the radius (ft); the angle in decimal degrees; and the angle in degrees, minutes and seconds.
Program for carbon steel pipelines in a range of nominal diameters from 4 in to 32 in. Designed to calculate the thickness of the concrete coating to negative buoyancy in pipelines.
Program for piping or hydraulic engineering, designed to calculate the volumetric flow through up to 3 types of flow meters by obstruction (orifice plate, nozzle and Venturi). The program calculates the Reynolds number and the flow velocity in the tube, the pressure drop, the discharge coefficient (with the exception of the Venturi meter) and the volumetric flow through the discharge orifice.
Available in 3 versions: Brazilian Portuguese with SI units, English version with SI units, and English version with English units.
Accepts as input the elements for a heliocentric elliptical or hyperbolic orbit, and a time of interest. The user inputs data by adjusting the values within the code. OE2PV outputs heliocentric state vectors for the object and for Earth, and it further outputs the geocentric distance, right ascension, and declination for the object.
Calculates the normal depth of a parabolic channel in the form of y = Cx^2, where C is the x^2 coefficient or curvature coefficient. The channel depth and width or any other known depth and width must be entered to describe the curvature of the parabola. Enter any three of the four variables (flow rate, depth, slope, and n) and solve for the fourth variable. The wetted perimeter P is calculated using the exact formula per Chow as redefined by Merkley. Includes comprehensive PDF documentation.
Allows various calculations on topics such as humidity, cooling towards, and adsorption.
A preliminary orbit determination code. By editing the code, the user enters position data for Earth and directional data for another object orbiting the sun at four distinct instants of observation. The program calculates the elements of the object's heliocentric orbit.
Program for the area of piping engineering, made to calculate the hole diameter of an orifice plate.
Works for liquids, gas and steam.
A simple keyboard-controlled periodic table of the elements. PDF documentation.
Library of physical constants.
A large menu driven system with many formulas and diagrams for physics and electronics, including Karnaugh maps, resistor calculations, Zener diodes, and more.
This pipe calculator program calculates the unknown variable for Manning, Colebrook-White, Continuity (Q=), Area, Critical Flow, and shear stress equations for a circular pipe flowing partially full. The program uses the calculator’s unit functions, so the user must select the unit of the solve variable. The results are displayed on the calculator’s print terminal. To switch between programs, select the new program from the Menu on the INPUT screen and press the OK tab. To rerun the same program, press the Esc key to exit the terminal, and press the Enter key to rerun the program. Includes PDF documentation.
Calculate N, Q, S, Dia, or y/D for partially full pipes using Manning's Equation in English or Metric units. The program also computes the corresponding velocity. The depth of flow ratio, y/D, is solved by numerical analysis using the secant method. Where there are two solutions, only the first solution between 0 < y/D < 0.9381 is reported. When solving for the diameter, the calculated diameter and diameter rounded to a standard size are given. This program is a conversion of an old FORTRAN program that was printed in Schaum’s Solved Problems in Fluid Mechanics & Hydraulics, 1989.
Calculates the weight of the piping in the international system (kgf/m) and english units (lbf/ft).
Program for the piping area, designed to calculate the volume leaked and the leak time through a crack, due to the depressurization of the pipeline. Only for incompressible flow in long carbon steel ducts with nominal diameters between 4 and 32 in. It has the option to choose up to 7 types of fluid (water, salt water, oil, ethanol, gasoline, kerosene and crude oil). In the raw oil option, it has the choice of an API degree from 10 to 44, and a temperature from 41ºF to 149ºF.
Useful short program to calculate piping loop dimension to reduce stress in the pipeline. Here you can find the base version; eventually there will be a more user-friendly version.
Thermal expansion is a simple program to calculate the pipe expansion due thermal action. This program include also the force and pressure on the pipe supports. Very useful during the stress analysis calculation and during piping design.
Code that solves the Planck integral for radiant flux in watts per square meter, given a temperature in Kelvins, between a lower wavelength and an upper wavelength, with an option to calculate the luminous power of a sphere of input radius.
Calculates the time-to-fall in a plunge orbit (eccentricity=. The zip file contains two programs. PLUNGE1 requires input values for the initial separation where two objects are at mutual rest, and for the separation between those same objects at two subsequent times prior to contact. The code calculates the amount of time to fall from the initial separation to each of the subsequent positions, and then it calculates the time difference; i.e. the amount of time to fall from the first subsequent position to the second subsequent position. PLUNGE2 requires input values for an observed separation and for an observed radial velocity (in approach) for that separation, and for a final separation. The initial distance is calculated using the Vis Viva equation. Then the amount of time required to fall from the initial separation to the observed separation is calculated. Next, the amount of time required to fall from the initial separation to the final separation is calculated. Finally the time difference required to fall from the observed position to the final position is found by subtraction.
Demo version of a program to perform calculations to determine the required embedment depth for free standing poles embedded in earth or concrete which are subjected to lateral and axial loading conditions. Both laterally constrained and unconstrained conditions can be analyzed, as well as isolated and non-isolated poles. The User inputs the physical characteristics of the pole, soil properties and lateral and axial loads and the program calculates required pole embedment depth. The program will analyze both round and rectangular shaped poles, multiple concentrated and full or partially distributed uniform lateral loads located at User specified points above the pole base. The User can also specify if the lateral loads are due to seismic or wind. Up to two additional axial loads can also be specified. In this demo version, only one lateral load can be specified, and allowable lateral soil bearing pressure is set to 100 psf/ft.
Finds for any polygonal cross-section with gaps of circle areas the main section properties, draws the plot of the contour and computes for any load combination of N, My, Mz the stresses in all input points. Furthermore the intersection points of neutral axis ( Sigma = ) and contour of the polygon are calculated.
Performs circuit analysis of polyphase/balanced three-phase circuits. Includes PDF documentation.
Calculates loss of load, volumetric flow, and diameter.
Mechanical engineering program. Works with thermodynamic properties of air and interpolation and some other things.
Advanced periodic table based on the Touch Periodic Table of Elements. Full source code included, extensive documentation, and English and German versions.
Vapor pressure equations program for the Thermodynamics course. Contains the HENDRIK equation equation and 2 ANTOINE equations.
Performs calculations related to the refrigerants R134a and R22.
Calculates ephemeris in real time. In Indonesian.
Calculates on the basis of Eurocode 2 the tension reinforcement and, if required, the reinforcement in the compression zone of a concrete beam with given geometry, quality of concrete and loads M,Ed and N,Ed. Afterwards the calculation for a shear force V,Ed is performed. Documentation in German.
Calculates the current limiting resistor for a given number of LED diodes in series.
Enter the colors of a resistor, and the resistance is calculated.
A simple but effective resistor color coding app. Supports both 4 and 5 band resistors.
Calculates the condensed stiffness matrix and the general matrix for a typical framing system, assuming all elements are fully flexible.
Calculates the global stiffness matrix of a system whose elements are completely flexible.
An app that allows determining the resistance parameters of the rock mass, according to the Generalized Hoek-Brown failure criterion.
RPN Calculator app designed for typical math operations and optimized for survey calculations with angle, distance, area and volume unit support, as well as 2D/3D vectors. Converting between units is simple, and results can be stored in variables for later use. Now has a FIF menu which was inspired by the FIF49 app for HP 49/50 for working with feet-inches-fractions dimensions.
Computes the scattering matrix S-parameters, the stability and noise circles of simple RF-circuits.
Program for calculating the area, center of gravity, moments of inertia and main angle of composite geometric figures.
Demo version of a program that performs calculations to determine the structural properties of typical shapes. The user inputs the physical dimensions for a selected shape and the program calculates the following properties for both the X-X and Y-Y orthogonal axes: Area, Centroid Depth, Moment of Inertia, Elastic Section Modulus, Plastic Section Modulus, Radius of Gyration, Torsional Constant and Shape Factor. Analyzes I-Shaped, Solid Rectangular and Circular and Solid Rectangular and Circular Tube sections. The paid version of the program adds Angle, Built-Up Girder with Web and Flange Plates, Channel, Symmetrical I-Shaped Girder, Unsymmetrical I-Shaped Girder, Solid Rectangle, Solid Round Bar, Rectangular Tube (HSS), Circular Tube (HSS), Tee and Zee Sections. LT Version will analyze I-Shaped, Solid Rectangular and Circular and Solid Rectangular and Circular Tube sections.
Calculates both series and parallel impedance, and allows you to accumulate resistors by building on prior calculations.
Various separate programs to perform some engineering calculations, for Strength of Materials, including Second Moment of Inertia, Common Dimensions, Complex Stress Systems Calculation, Equivalent Torque and Moment, Moment Calculation, Rosettes, Thinwalled Pressure Vessel, and more.
Calculates for a single-span girder with any number of sections and elastic restraints or external moments at the supports the support reactions, end moments and maximum field moment including its location. Each section may have a trapezoidal load and a point load at the right end. Furthermore the shear force and the internal moment for any point of the beam can be calculated.
Displays a Smith chart and if you tap a point will display many of the relevant data about that point, including Z, X, Gamma, Return Loss, VSWR and Q. Modified to be an app that expands to fill the display, inverting the cursor, and more. Gives the usual Smith chart results just by clicking on the chart. Also, up to 3 parameters can be clicked to select colors and when "Gradient" is clicked, the gradients in the selected colors are plotted. Much faster than the previous version.
Computes for a rectangular foundation submitted to vertical loads N and moments My and Mz the soil pressure for all points of the contour in consideration of a open gap (no tension possible in the gap). The automatic consideration of the own weight is provided. A plot of the area of pressure is depicted after calculation.
Performs symbolic time to frequency and frequency to time calculations: calculates for a given symbolic f(t) Fourier, Laplace and Z-transformation in symbolic form, draws the complex Laplace function together with the Fourier transformation slice as a 3D plot, and calculates for a given frequency transfer function the unity pulse, dirac pulse response and bode magnitude and phase in symbolic form. Includes PDF documentation.
Does spectrum analysis using a Fourier transform.
Calculates for a one-field beam with modulus of elasticity E and moment of inertia I the equivalent spring constants (vertical spring c,v and rotational spring c,phi) at any point of the beam's length L. Different kinds of support conditions are provided.
Calculates the standard flow rate of a pipeline using 9 calculation models (Theoretic, Weimouth, Panhandle-A, Panhandle-B, IGT, Mueller, Fritzsche, AGA-A, AGA-B). The listed calculation models are specific for flowing real gases in long ducts under approximately constant temperature (Real Fluid Isothermal Flow). Models include the gravitational energy term, allowing better results for ducts through mountain regions.
Some kind of steam calculation application with vapor tables.
Calculates the depth of flow in a composite gutter section using Manning’s equation modified for shallow or sheet flow using the HEC 22 (August 2013) equation that describes Q in terms of Sx, S, and T and not the equivalent equation that described Q in terms of Z, S, and d. Program assumes: (1) the curb face is vertical, (2) friction on the curb face is ignored, and (3) flow is contained in the street and gutter section, even if the water depth is above the height of the curb.
Program in the area of piping engineering, designed to calculate the force that an anchor block must withstand in the buried/air transition or the requirements for the transition to take place without an anchor block (transition length).
Program for the piping area, designed to calculate Fanno's flow properties (adiabatic duct flow with friction): stagnant properties; critical properties; input and output properties; and reduced mass flow rate when flow is blocked at outlet. Units of measurement in the International System. Note: Only for subsonic match number at the entrance.
Calculates the following properties for adiabatic duct flow with friction (Fannow flow): stagnation, critical, inlet and outlet duct with mass flow, update of incoming Match number for blocked duct at the entrance, reduced mass flow rate for the blocked duct at the inlet. Also calculates flow into a duct under permanent, adiabatic, and unidimensional flow, perfect gas with constant area, axle work and potential energy negligible, and wall friction related to Darcy-Weisbach's equation.
Air Properties Program, with variables such as temperature, enthalpy, relative pressure, internal energy, relative volume, and entropy. Only 1 input parameter is necessary.
Tables for Isentropic Flow, Shockwaves, Fanno Flow and Rayleigh Flow, given the Mach number. Includes PDF documentation.
Finds the thermodynamic properties of R134a refrigerant by calculating pressure, temperature, specific volume, internal energy, enthalpy, and entropy
Program designed to calculate the emptying time of a reservoir (constant section, inverted cone or spherical) with a free surface exposed to the atmosphere, using an orifice or horizontal tube of length L, diameter D and an outlet also exposed to the atmosphere. Conditions are non-stationary flow (discharge velocity varies with height of liquid in reservoir) and incompressible (liquids only) with loss of head in discharge piping. The user can choose up to 10 types of fluids for calculation. Ex: fresh water, salt water, motor oil, gasoline, ethanol and kerosene.
Calculates the quantity of diluted asphalt or emulsion using the tray methodology in liters per square meter.
Takes from all of the HP Prime periodic tables available until now, and implements an all brand-new dark mode to be easier on the eyes.
Allows you to calculate the fugacity from a single component (pure) or mixture, using any of the following state equations: "virial", "Van der Waals", "Redlich-Kwong", "Redlich-Kwong-Soave", "Peng-Robinson". Also allows you to calculate the activity coefficient, using "Margules", "Van Laar", "Wilson", "UNIQUAC", "UNIFAC". ("Infinite dilution activity coefficients" method).
Solves cubic equations of state, calculates residual properties and fugacity coefficients for a single specimen or a mixture; optionally, you can enter the binary interaction parameters Kij.. The app also includes spreadsheets for the Virial equation of state and four functions to calculate MCPH, ICPH, MCPS and ICPS.
Program for topographic calculation with tools of data collector, calculation of coordinates, areas, courses, intersections, plotting, generation of DXF, import and export of points, and more.
Several mining math tools for calculating topography, including the 2D planimetric method (entering the initial and final coordinates in 2D, or the initial coordinate and azimuth and distance) and the 3D tachimetric method (for the azimuth, course, vertical angle, horizontal angle, real distance, and slope, or the absolute coordinates, vertical distance, horizontal distance, and vertical angle).
A comprehensive touch-controlled periodic table of the elements with details about each element and plotting of details. PDF documentation.
Given Muzzle Velocity, and Muzzle Angle, the Horizontal Distance, Max Altitude, and Flight Duration are calculated. As with all of the author's spreadsheets, the blue text cells are the input data and the red text cells are the calculated output data. Note: The calculator must be in Degree mode.
A simple trapezoidal channel calculator. Uses fsolve to solve Mannings and critical depth equations. For rectangular channels, use a side slope z=0. For triangular channels, use a bottom width b=0. Also calculates average shear stress.
Finds the longitudinal forces in a 2-dimensional- or 3-dimensional truss by means of solving the matrix of equations of equilibrium at the nodes for the entire system.
Unit converter that is faster and more flexible that the one by default in the calculator. It doesn't have all the units, but it have some new units that are commonly used in engineering.
Calculates the liquid-vapor phase equilibrium of a real binary mixture, using the NRTL method.
Steam tables with thermodynamic properties of water and steam calculated from the industrial standard IAPWS-IF97.
Choose two parameters among pressure, temperature, specific volume, enthalphy, entropy, and steam fraction, and get the others as a result.
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An application for the calculation of continuous beams, it is possible to enter different configurations of loads and supports, as a result it presents the reactions, equations in each of the ranges, the shear diagram, the moment diagram, the angle diagram, the deflection diagram and the maximum and minimum points of each diagram.
Calculates geometric properties of beams, including static moment and moment of inertia. Calculates the results of the supports, shear force, and bending moment. Fits linear, trapezoidal, and straight loads. It can also graph and display calculations, both by integration and section cuts.
Calculates wattage given voltage for an AD8318 logarithmic detector.
Does calculations for a Wheatstone bridge circuit. Given the four resistances and the input voltage, calculates the voltages in the middle and each side of the bridge.
Given latitude and longitudes, calculates the distance between any two points on the Earth, approximating the planet as a sphere. Includes data for 40 major world cities.
Displays a simple periodic table of elements.