A 21.7kg child descends a slide 3.5 m high and reaches the bottom with a speed of 2.2m/s. How much thermal energy due to friction was generated in this process?

How many times more intense is the full 10 person choir than the soloist alone?

Identify each of the quantities below as either vector or scalar 75 km/h east 3.2m/s 18 m/s2 east 10 mi/h south

Certain materials can become superconductors under what conditions? a. When it is very hot c. Under very high pressure b. When it is very cold d. Under very low pressure

What is offensive action in sports? Give at least one example to support your definition

In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of + 4.1 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of 2.1m/s.

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart's velocity after a 6.0-newton westward force acts on it for 2.

A boat floats with 25% of its volume under water. a. What is the boatâs density? b. If the boat was made from 500 kg of metal, what is the volume of the boat? (Assume the air in the boat has negligible mass and density) c.

Why does each mineral have their own property, different from every other mineral?

Earth's tallest mountain ranges are found at plate boundaries

Is a lung a living organism, why or why not?