Mark is biking a a velocity of 20 m/s and has a mass of 70kg what is his momentum

a baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 Kg. how much energy does the carriage have?

Part A Two speakers face each other, and they each emit a sound of wavelength λ. One speaker is 180∘ out of phase with respect to the other. If we separate the speakers by a distance 1.

if a rock has a speed of 12 m/s as it hits the ground, from what height did it fall assuming the speed was zero. its mass is 50 kg

What is the smallest thing in the world?

The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional boxer exerts a force of 1.9 * 103 N with an effective perpendicular lever arm of 2.

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?

Do substances that heat up quickly have high or low specific heat capacity?

A substance has a specific heat of 0.870 J/g°C. It requires 2,000.0 joules to increase the temperature of 10.0 grams of the substance from its original temperature to its final temperature. By how many degrees did the substance increase? A 87.

How many earth years does it take mars to orbit the sun

Which represents a system that is almost completely closed?