JSCalc

The speed of sound vary with air temperatures; summer sounds are not the same as winter in a concert hall. Why? Sound waves has wavelengths … Read More

The principle is called kinetic energy, it’s the energy of movement. While a single grain of sand shot out of a revolver could shatter bone, … Read More

It is a numbers game. Hunting with a crossbow is a numbers game, but it isn’t forgiving. Manufacturers love to shout a single number like … Read More

When you slam on the brake, you experience sense of loss, and that’s explained by the work-energy theorem. That sense of loss arises from removal … Read More

Most introductory physics classes treats air as if it doesn’t exist. You toss up a ball at some angle and watch its path follow a … Read More

Whether it’s throwing a basketball into a hoop or tossing a ball for fun in the driveway, there are two invisible forces battling each other … Read More