Which statement best describes the term absolute threshold?
a. it refers to the maximum amount of information that a person can process.
b. it refers to the lowest intensity at which a person can detect stimuli.
c. it refers to the minimum change in intensity of stimuli that a person can detect.
d. it refers to the amount of physical energy that a person can convert to electrical energy.

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?