Read each scenario and then answer the question. Scenario A: A ramp is used to lift a refrigerator a height of 12 m with a force of 110 N. The ramp is at an angle of 50° to the ground.

Scenario B: A ramp is used to lift a refrigerator a height of 13 m with a force of 120 N. The ramp is at an angle of 22° to the ground.

Scenario C: A ramp is used to lift a refrigerator a height of 14 m with a force of 93 N. The ramp is at an angle of 34° to the ground.

Which scenario requires the most work?

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.