To see how two traveling waves of the same frequency create a standing wave.

Consider a traveling wave described by the formula

y1(x, t)=Asin(kx−ωt).

This function might represent the lateral displacement of a string, a local electric field, the position of the surface of a body of water, or any of a number of other physical manifestations of waves.

a)

Part A

Part complete

Which one of the following statements about the wave described in the problem introduction is correct?

The wave is traveling in the +x direction.
The wave is traveling in the −x direction.
The wave is oscillating but not traveling.
The wave is traveling but not oscillating.

The wave is traveling in the - x direction.

Explanation: The parameter in a wave function determines the direction of the wave is "ωt"

Where ω = angular frequency(in hertz ) and t = time taken (in seconds)

The product of ωt = 2π which is angular displacement in radian.

A negative value of the of ωt means the wave is traveling in the negative direction.

Also a positive value of sin ωt means the wave is traveling in the positive direction

it about 600 mph from what i calculated

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: