A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. The sled's potential energy is J. (Formula: PE = mgh)

A space probe produces a radio signal pulse. If the pulse reaches Earth 12.3 seconds after it is emitted by the probe, what is the distance from the probe to Earth?

How do astronauts avoid muscle atrophy in space? A. they eat a lot. B. They sleep less. C. They exercise. D. They sleep more.

A neutrophil is a type of?

If u accomplished 10,000 newton meters of work how much work did you do in units of joules

What is the energy of a rock that weighs 125 n that is sitting on top of a hill 301 m high?

In which state of matter are particles packed tightly together and stay in fixed positions?

An apple has a mass of 0.136kg and a watermelon has a mass of 9.07kg. Work out the mass of the apple as a percentage of the mass of the watermelon. Round to two significant figures. Convert kg values into pounds

In an experiment, 108 J of work was done on a closed system. During this phase of the experiment, 79 J of heat energy was added to the system. What was the total change in the internal energy of the system?

Which of the following force fields will deflect electron beams? Magnetic Electrical Gravitational

Which movement of the Earth cause day and night?