The two continental ice sheets that exist in the world today are:

What term describes the philosophical shift toward more rational and scientific thought in the late eighteenth century?

An object of mass 10 kg is at rest when a net force of 20 N acts on it in a direction east. The acceleration produced on the object is? a) 2 m/s^2 in the direction east b) 2 m/s^2 in the direction west c) 0.5 m/s^2 in the direction east d) 0.

Blood groups are classified of

Consider the diagram of the water cycle. Assume that deforestation has taken place. How will this effect the movement of water through this model? A) Run-off will decrease. B) Sea level will increase. C) Condensation will increase.

A car traveling 85 km/h slows down at a constant 0.47 m/s^2 just by "letting up on the gas." Calculate the distance it travels during the first second. Express your answer to two significant figures and include the appropriate units.

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.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?