If the sound waves frequency is 1,000 Hz, and it travels with a wavelength of 0.05 What is the Velocity of the wave?
340 m/s
100 m/s
20,000 m/s
50 m/s

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

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.

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied