Is mercury (the planet) rocky or gaseous (meaning relating to or having the characteristics of a gas.)

Cobalt-60 has a half life of 5.25 years. If you started with a 40 gram sample of pure cobalt-60, how many grams of cobalt-60 would remain after 10.5 years?

Which statement describes a force between charged particles? 1) Like charges repel each other. 2) Like charges attract each other. 3) Unlike charges repel each other

What is the wave length of a water wave.

Describe why you weigh less on moon than on earth. Give examples

John coasts on his skateboard at a speed of 4 m/s. He uses his foot to increase his speed to 5 m/s. If he has a mass of 103 kg, what impulse does he apply

Which factor will affect the light-gathering power of a telescope? A. change in the focal length B. change in the diameter of the objective C. change in the angle of the objective D. change in the elevation of the telescope E.

What is the acceleration of a 30.0-kg go kart if the thrust of its engine is 300.0 N?

Which of the following correctly compares a scientific investigation to a demonstration

You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.25. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s

What is the middle layer of earth called