The magnetic effect of a current

Questions 1, 3 and 4: 1. State the direction of motion (force) experience by the following pieces of wire in the respective magnetic fields. Direction of current is shown by an arrow. Give answers as... Please see attached for full questions.

Resistor problem

If a current of 15 A is flowing through the 15 ohm resistor. What is the voltage? Please see attached for diagram.

interference and diffraction

what is the difference between interference and diffraction of light waves?

magnetic effect of current

I have to answer all parts of question 2, 6, 7 and 8. Thanks in advance

constructive interference

assuming that x is the wavelength of light in oil(they used a different variable but my pc cant reproduce that symbol), for an oil film on water, constructive interference occurs with the minimum film thickness of: a.2x b. x/4 c. x d. x/2

red and blue light; rectangular glass plate; light emerges into the air from point P

a light beam composed of red and blue light is incident upon a rectangular glass plate. the light emerges into the air from point P as two seperate beams a. that are parallel, with the red beam displaced below the blue beam. b. that are not parallel, with the blue beam displaced below the red beam. c. that are not parallel ...continues

the index of refraction; given wavelength of light travels ...

the index of refraction of diamond is 2.42. this means that a given wavelength of light travels a. 2.42 times faster in diamond than it does in vacuum b. 2.42 times faster in diamond than it does in air c. 2.42 times faster in vacuum than it does in diamond d. 2.42 times faster in air than it does in diamond

if two light beams are coherent...

if two light beams are coherent, which of the following is NOT necessary? a. they must have the same velocity b. they must have a constant phase differnce at every point in space c. they must have the same frequency d. they must have the same wavelength e. they must have the same amplitude

Find: minimum amplitude where ant on string would become weightless...

Weightless Ant. An ant with mass is standing peacefully on top of a horizontal, stretched rope. The rope has mass per unit length and is under tension . Without warning, Throckmorton starts a sinusoidal transverse wave of wavelength propagating along the rope. The motion of the rope is in a vertical plane. What minimum wav ...continues

Find Tension

A sinusoidal transverse wave travels on a string. The string has length 7.60 and mass 5.85 . The wave speed is 31.0 and the wavelength is 0.220 . If the wave is to have an average power of 55.0 , what must be the amplitude of the wave? My only issue for this promblem is how to find the tension needed to plug into the ave ...continues