Question

Which of the following about a wave pulse traveling down a long spring is true? i. The size of the wave pulse decreases significantly as the wave pulse travels a short distance ii. The shape of the wave pulse gets spread out very quickly Only i. Only ii. Both i. and ii. Neither i. nor ii. A wave pulse is described by a faction y = f(x) at t = 0. If the wave pulse is traveling in the +x direction with a speed v0, which equation correctly represents the pulse at a later time t? y = f(x) + v0*t y = f(x) - c0*t y = f(x + v0*t) y = f(x - v0*t) How does increasing the tension in a string affect the speed of waves in the string? The speed of the waves increases The speed of the waves doesn't change The speed of the waves decreases

Answer 1

1). Correct option: neither i nor ii.

2). Correct option: y= f(x-v_ot)

3). Following the formula:

$speed= \sqrt{\frac{Tension}{Mass. density}}$

Correct option: The speed of the wave increases.