Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

A 380-g air track cart traveling at 1.25 m/s collides elastically with a 340-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the 340-g cart after the collision?

The specific heat of copper is 0.093 cal/gC°, and the specific heat of aluminum is 0.22 cal/gC°. The same amount of energy applied to equal masses, say, 50.0 g of copper and aluminum, will result in a. a higher temperature for copper. b.

What is the potential difference across a 15 Ω resistor that has a current of 3.0 A?

Hurricanes, thunderstorms, and blizzards are all meteorological disasters. What does "meteorological" mean? AOcean-based incorrect answer BCaused by meteors incorrect answer CRelated to the weather incorrect answer DUnpredictable

What if there is no subscript for a element?

Which of the following substances will show the smallest change in temperature when equal amounts of energy are absorbed? water air sand concrete

The downward acceleration of a falling body on Earth is 9.81m/s2. On the moon the same quantity is 1.62m/s2. An astronaut in a space suit has a mass of 145kg.

Explain how a guitar produces sound by using the terms standing waves and resonance.

Why can only igneous rock be formed directly from magma?

Streamlined objects are smooth and?