A rock is dropped from a window 5 m above the ground. the rock hits the ground 1 s later with a speed of 10 m/s. what is the average speed of the rock during this time

Volcanoes change the earth by a) slowly seeping and flowing over time b) slowly heating the surface c) rapidly using up the oxygen d) keeping mountains from growing

A titanium cube contains 3.5 * 1023 atoms. the density of titanium is 4.50 g/cm3 part a what is the edge length of the cube?

An object is represented by the dot on a motion map. What is the best description for the motion of this object?

Which describes an object in projectile motion? Select three options. Gravity acts to pull the object down. The object moves in a straight path. The forward velocity of the object is 0 m/s. The object's inertia carries it forward.

What are beats? A. periodic fluctuations in the velocity of sound waves B. periodic fluctuations in the wavelength of sound waves C. periodic fluctuations in the intensity of sound waves D. periodic fluctuations in the frequency of sound waves

Which of the outer planets are most like Earth? How?

The pressure inside a champagne bottle can be quite high and can launch a cork explosively. Suppose you open a bottle at sea level. The absolute pressure inside a champagne bottle is 6 times atmospheric pressure; the cork has a mass of 7.

Using a cathode ray tube, Thomson confirmed that atoms must have an overall positive charge. atoms are made of particles that have a negative charge. electrons in atoms must have varying amounts of energy. electrons are only found in the nucleus.

A ball is rolled along the inside of a partial hoop lying flat on a table. which path will the ball follow when it gets to the end of the hoop?

What pattern of material movement found in the Earth system tracks how an element moves from living to nonliving parts? a. rock cycle b. calcium cycle c. carbon cycle d. none of the above