As a wave moves through a medium at a speed v, the particles of the medium move in simple harmonic motion about their undisturbed positions. The maximum speed of the simple harmonic motion is vmax. When the amplitude of the wave doubles, both v and vmax double. both v and vmax remain unchanged. v doubles, but vmax remains the same. v remains unchanged, but vmax doubles.

v remains unchanged, but vmax doubles.

Explanation:

In simple harmonic motion, the change in amplitude of a wave does not affect the speed of the motion.

But, Vmax = ωA so if A is doubled the max velocity is doubled.

Vmax = ωA

Vmax = 2 * ωA.

dt = 0.17 sec

Explanation:

we know that induced Emf is given as:

Since Area is constant, So  

N = Number of loops = 450

A = Area of each loop

dB = Change in magnetic field = 3.00 T - 0 T = 3.00 T

dt = time interval = ?

So,

dt = 0.17 sec