Which characteristics are used to identify types of metamorphic rocks? Check all that apply.

color

foliation

rock size

grain arrangement

type of rock before metamorphosis

A rock is dropped downward from the top of a cliff. If the rock hits the ground after 2.0 s, what's the height of the cliff?

Describe the energy transfer when you touch a block of ice with your hand

When asked how to create an electromagnet, the best answer would be, "You can create an electromagnet by A. applying a direct current to a non-magnetic material in order to create an electromagnetic field." B.

Explain how the change in temperature indicates a change in thermal energy (heat) ?

Which of e following conditions would decrease the ability of a person to bear a sound? A. The frequency of the sound remains steady at 100Hz. B. The liquid medium in which the sound travels is replaced with elastic solid. C.

Which process causes wells on land to become saline, making them unusable for drinking water? A. Erosion B. Echo sounding C. Eutrophication D. Groundwater infiltration

A farmer uses a tractor to pull a 150 kg bale of hay up a 15∘ incline to the barn at a steady 5.0 km/h. The coefficient of kinetic friction between the bale and the ramp is 0.40. Part A What is the tractor's power output?

Identify the conditions for an elastic collision in a closed system. Check all that apply. Energy is conserved. Velocities may change. Momentum is conserved. Kinetic energy is conserved. Objects stick together after the elastic collision.

When the velocity of a mass on a spring is zero, the acceleration is at

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.