If an object has a mass of 40 kg, what is its weight at Earth's surface?

what is haopening to the speed and acceleration as a car travels from rest to 72 km/hr in 4.0 seconds?

A 1,160 kg satellite orbits Earth with a tangential speed of 7,446 m/s. If the satellite experiences a centripetal force of 8,955 N, what is the height of the satellite above the surface of Earth? Recall that Earth's radius is 6.

Identify the method of thermal energy transfer.

8. A student does 1,000 J of work when she moves to her dormitory. Her internal energy is decreased by 3,000 J. Determine the heat during this process. Does she gain or lose her heat

20. What factor is more important in determining electrical force 21. Why do we need constants like k and G?

Which rock is made mostly of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite?

What does the atomic number tell us about an atom of a certain element?

A certain chemical reaction experiences a 7.50 x 10-7 kilogram loss in mass. If this mass were to be totally converted to energy, what would be the magnitude of that energy.

How does gravity create inertia

How would a person's mass be affected by traveling to Saturn and why?