Mechanics | Relativity Answers

A wave has a frequency of 525 Hz. What is its period? answer in seconds

In a foggy harbor, a tugboat sounds its foghorn. Bobbie stands on shore, 7.5×102 m away. The foghorn's sound wave completes 1.1×103 cycles on its way to Bobbie. What is the wavelength of the sound wave? answer in meters.

A water strider sits on a the surface of a still lake. A rock thrown into the lake creates a series of sinusoidal ripples that pass through the location where the strider sits, so that it rises and falls. The distance between its highest and lowest locations is 0.008 m. What is the amplitude of the wave, .002m, .004 m, or .008 m?

You have two strings of different linear densities tied together and stretched end-to-end between a pair of supports. What happens to the speed of a wave that passes from the more dense string to the less dense one? does the speed increase, decrease, or no change(not change at all)?

When sports spectators do "the wave," are they making a transverse or longitudinal wave? Explain.

Many children are lined up at an ice cream stand. If the child at the back pushes the child in front of him, and she in turn pushes the child in front of her, and so on, will they create a transverse or longitudinal wave in the line? Explain.

Sound spreads radially in all directions from a source with power 15.3 W. If the intensity you experience is 3.00×10−6 W/m2, how far away are you from the source? answer in meters.

A longitudinal wave spreads radially from a source with power 345 W. What is the intensity 40.0 meters away? answer in W/m^2.

15.0 meters from a sound source that radiates freely in all directions, the intensity is 0.000550 W/m2. What is the rate at which the source is emitting sound energy? answer in Watts.

You are standing 7.0 meters from a sound source that radiates equally in all directions, but it is too loud for you. How far away from the source should you stand to experience one third the intensity that you did at 7.0 meters? answer in meters