In which of these situations does a roller coaster have the most kinetic energy?

A. climbing up the first hill

B. at the top of the first hill

C. half-way down the first hill

D. at the bottom of the first hill

You are pushing on a heavy desk with a force of 65 N the desk does not slide the force of friction between the desk and the floor is 65 N true or false

In a vacuum (an environment without air), what will happen when two objects with different mass are dropped at the same time from the same height? A. They both land at the same time. B. The less massive object lands first. C.

What is the frequency of a sound wave commonly called?

A student is trying to decide what to wear. His bedroom is at 20.0°C. His skin temperature is 30.0°C. The area of his exposed skin is 1.45 m2. People all over the world have skin that is dark in the infrared, with emissivity about 0.915.

Volume d'une piscine olympique : 1000m3 = ? L

How far apart are the stop signs

What is meant by critical angle of indence?

Which is the satellite Terra able to do? A) Monitor the movement of comets and meteorites B) Monitor seismic activity on the moon C) Monitor the orbit of Mars D) Monitor volcanic eruptions on Earth

Which statement best describes a risk associated with using radioisotopes in nuclear reactors? A Radioisotopes are very expensive and do not produce the amount of energy that coal and oil produce.

Batteries should only be removed from the premises by a licensed battery hauler for recycling. A) True B) False