If the mirror moves a distance of 1 cm in the direction of the body so, the distance of the image from the first image is a)1cm b)2cm c)3cm and why

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.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

In science and physics what is the standard unit of measure for speed?