Compare the earth and the moon in terms of size and surface gravity.

A 4kg mass is in free fall. What is the velocity of the mass after 11 seconds.

What includes a phase of the cell cycle and a cellular process that occurs during a phase

A lamp operates at 115 volts with a current of 0.25 ampere. What is the lamp's resistance?

How can a negative ion form from an atom?

What is a process that involves the collection of information and ideas supported by evidence.

Thermal energy from the Earth's core heats rock and creates magma. This hot magma then rises toward the Earth's surface, cools, and sinks back down toward the Earth's core. Which actions below occur during this process? (multiple answers) A.

A surface is bombarded by particles, each of mass small 'm', which have velocity normal to the surface. On average, n particles strike unit area of the surface each second and rebound elastically. What is the pressure on the surface? A. nmv B.

If an atom has twelve electrons, how many electrons are in the n=1 energy level? how many electrons are in the n=2 energy level? how many electrons are in the n=3 energy level?

Which object is largest? star galaxy globular cluster planet?

What if the population of rabbits decrease, what would happen with foxes and owls?