As you are sitting in your chair the force of gravity is pulling you down. The amount of force you are applying to your chair is equal to your

A. strength.

B. weight.

C. height.

D. mass.

About how much of Earth's land surface is used for agriculture? 8% 18% 28% 38%

Which of these reactions is responsible for energy radiating from stars, including the sun?

6. What's a stalactite? A. Poisonous mass found in caves that is formed by polluted water B. Mound-shaped stone shaped by weathering C. Large mound of dirt created by erosion D.

Which sequence lists the water cycle in order? A) condensation, evaporation, runoff/storage, precipitation B) evaporation, condensation, precipitation, runoff/storage C) condensation, precipitation, evaporation, runoff/storage Eliminate D)

When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens, the plane's shadow is a. in the center of the rainbow. b. totally outside the rainbow. c. in the upper part of the rainbow. d. Nowhere. There is no shadow. e.

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.