Water wave/Deep water waves

A water wave is called a deep-water wave if the water's depth is more than 1/4 of the wavelength. The speed of a deep water wave depends on its wavelength: v = sqrt((g.lambda)/2pi). Longer wavelengths travel faster. Let's apply to this to a standing wave. Consider a diving pool that is 5.0 m deep and 10.0 m wide. Standing w ...continues

Light Optics

One of the slits of a double-slit experiment is wider than the other, so that the amplitude of the light reaching the central part of the screen from one slit, acting alone, is twice that from the other slit, acting alone. Derive an expression for the intensity I in terms of theta.

Superposition of Waves

The broadcast antenna of an Am radio station is located at the edge of town. The station owners would like to beam all of the energy into town and none into the countryside, but a single antenna radiates energy equally in all directions. The attached figure shows two parallel antennas separated by a distance L. Both antennas bro ...continues

Waves/Superposition

Three identical loudspeakers play a 170 Hz tone in a room wehre the speed of sound is 340 m/s. You are standing 4 m in front of the middle speaker. At this point, the amplitude of the wave from each speaker is "a". a) What is the amplitude at this point? b) How far must speaker 2 be moved to the left to prduce a maximum apl ...continues

Find the magnitude of the difference between the frequency of the emitted wave and the wave that returns to the police car after reflecting from the speeder's car.

A police car is moving to the right at X m/s, while a speeder is coming up from behind at a speed X m/s, both speeds being with respect to the ground. The police officer points a radar gun at the oncoming speeder. Assume that the electromagnetic wave emitted by the gun has a frequency of f Hz. Find the magnitude of the differenc ...continues

Problem on wave.

A police car is moving to the right at P m/s, while a speeder is coming up from behind at a speed I m/s, both speeds being with respect to the ground. The police officer points a radar gun at the oncoming speeder. Assume that the electromagnetic wave emitted by the gun has a frequency of H Hz. Find the magnitude of the differenc ...continues

Please help immediately

Consider a series RLC circuit with R=15 ohm, L=200mH,C=75uf, and a maximum voltageof 150V. a)What is the impedence of the circuit at resonance?b)What is the resonance frequency of the circuit?C)When will the current be greatest--at resonance, at 10 percent below the resonant frequency, or at 10 percent above the resonant frequen ...continues

Simple harmonic motion of a loop in a magnetic field

In the discussion of motional emf it assumed that the wire loop (see fig. in the attachment ) has a resistance R; the current generated is then I=vBh/R. But what if the wire is made out of perfectly conducting material, so that R is zero? In that case the current is limited only by the back emf associated with the self-inducta ...continues

Particle in Harmonic Motion

A particle moves in simple harmonic motion with a frequency of 2.20 Hz and an amplitude of 5.60 cm. Through what total distance does the particle move during one cycle of its motion?

A point source of light is 80 cm below the surface of a body of water

A point source of light is 80 cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water. Also explain using a digram.