What happens to energy when it is used

Hydrogen gas was cooled from 150c to 50c. its volume is 75.0 ml. what was its original volume?

A crane is used to lift an object. The crane applies a force of 400 to lift the object a distance of 25 meters in 20 seconds. Calculate the work in J performed by the crane to lift the object

4 meters and the frequency is 3 hz what's the wave speed

A box is partially filled with sand. The length of the box is 8 mm. The width of the box is 17 mm. If the volume of the sand is decreasing at a rate of 562 cubic mm per minute, what is the rate, in mm per minute, at which the height of the sand is

In your own words, write a definition for each of the following terms translucent and opaque

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.