The second law of thermodynamics states that

A woman falls to the ground while wearing a parachute. The air resistance of the parachute is 500N. If the woman falls at a constant rate of 5m/s, then the gravitational force on her is A) 500N B) less than 500N C) more than 500N D) There is not

Explain using complete sentences where on the HR diagram you would expect to find a main sequence star based on its physical properties.

Carla is traveling past you at a speed close to the speed of light. according to you, how much time passes for carla while one minute passes for you?

An open vertical tube has water in it. a tuning fork vibrates over its mouth. as the water level is lowered in the tube, a resonance is heard when the water level is 460 cm below the top of the tube, and again after the water level is 500 cm below

Pilots can be tested for the stresses of flying high-speed jets in a whirling "human centrifuge," which takes 1.2min to turn through 23 complete revolutions before reaching its final speed. a.

A scientist has found a new drug that appears to provide weight loss in humans without dieting. The scientist has tested the drug on thousands of people and has found a few side effects.

If there are 20 Earthworms in a garden that covers 5 square meters, what is the population density of the earthworms? A. 20 Earthworms B. 4 C. 100 Earthworms per square meter D. 4 Earthworms per square meter

How are AC and DC generators different? In AC generators, commutators produce alternating current. In AC generators, no commutators or slip rings are used. In DC generators, slip rings produce direct current.

A 30.0-kg object experiences a drag force due to air resistance with a magnitude proportional to the square of its speed. The object falls with an acceleration of 4.00 m/s2 downward when it is falling downward at 70.0 m/s.

If a tank contains water 4 m deep, what is the pressure at the bottom of the tank? (Neglect the atmospheric pressure.)