What is the crust of the earth made of

When an object is lifted against the force of gravity it has gravitational potential energy. The energy depends on the object's weight and its height. True or false (I think it's false)

How far will an object move in 3 s if its average speed during that time is 40 m/s? Answer in units of m.

When did the United States pass the act that western square dance was the national folk dance

If an atomic bomb were detonated on the surface of the moon, how long would it be until we heard the explosion on Earth?

How much space something takes up is called?

In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37,000 km/h.

What conversion factor is needed to change from kilometres to meters

What does the law of universal gravitation state?

Estimate the smallest possible period of a satellite in a circular orbit around earth. (mass and radius of earth is 5.98 x 1024 kg and 6.37 x 106 m. the universal gravitational constant g = 6.67 x 10-11 n. m2/kg2.)

What happens along a stationary front? a. Cold air rises over warm air. b. The flow of air is neither toward the warm air mass nor toward the cold air mass. c. Air moves so rapidly upward that hurricanes form. d. Wind stops completely.