Holiday Bonus ... in Iran

A student at Morgan State build a free calculator for her friends and family back in Iran. It's a simple calculator to compute their annual No-Rooz holiday bonus.

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Frustrating frustums!

Did you know that the slice of a geometric shape is a frustum? Here is a calculator dedicated to volume, surface area and mass formulas for cone, pyramid and other frustums.

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Want to understand the basic physics of motion for video game software?

Make realistic model predictions for projectiles and falling objects using vCalc's ballistics equations.

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Ever wonder how thin our atmosphere gets at high altitudes?

If you're interested in studying environmental effects on the atmosphere let vCalc help you examine Barometric Pressure as a function of altitude in the lower Earth atmosphere.

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