As a new electrical technician, you are designing a large solenoid to produce a uniform 0.150-t magnetic field near the center of the solenoid. you have enough wire for 3100 circular turns. this solenoid must be 57.0 cm long and 7.00 cm in diameter. what current will you need to produce the necessary field?

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.

Rohit is trying to tune an instrument

What is a subatomic particle with a negative charge and very little mass?