Water is useful for reducing friction between objects. However, you also learned that (due to friction) moving water causes rough rocks to become smooth. How can this be?

What tempature does stone turn to lava?

A vicious dog is pulling his owner with 150N of force. If the owner is dragged 40 meters, how much work did the dog do?

When an object is lifted 6 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 12 meters off the ground, its potential energy is

Why is UVA light considered a mutagen? It penetrates the skin and can cause mutations. It can be prevented by wearing a protective vest. It produces chemicals that can be inhaled. It is found in synthetic dyes and cosmetics.

How do you turn 18n into 11kg

Which statements correctly describe the properties of heat? Select all that apply. Heat is an essential component of life on Earth. Heat is energy that flows from one object to another. Heat flows from a hotter object to a colder one.

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book? A.

When NASA's Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One of the largest fragments was a 1770-kg lead-lined film vault, and it landed with an estimated speed of 120 m/s.?

A spring gains 2.34 joules of elastic potential energy as it is compressed 0.250 meter from its equilibrium position. What is the spring constant of this spring? (1) 9.36 N/m (3) 37.4 N/m (2) 18.7 N/m (4) 74.9 N/m

Form hypothesis: Where do you think we humans get energy?