1. A string wave is given by y = y m sin( kx – t ). Which of the following descr
ID: 1534075 • Letter: 1
Question
1. A string wave is given by y = ym sin(kx – t). Which of the following describes the wave and the string particles?
a.Wave travels along a y axis. Particles move parallel to an x axis.
b.Wave travels along an x axis. Particles move parallel to a y axis.
2. Which describes the linear density of a string?
a.It is the string’s mass per unit volume.
b.It is the string’s mass.
c.It is the string’s mass per unit length.
d.It is the string’s mass per unit cross-sectional area.
3. Which gives the transverse acceleration of an element on a string as a wave moves along an x axis along the string?
a.the first derivative of x with respect to time
b.the second derivative of x with respect to time
c.the first derivative of y with respect to time
d.the second derivative of y with respect to time
Explanation / Answer
1.A string wave is given by y = ym sin(kx – t)
Correct option is (b)
2. linea mass density = mass/length
Correct option is (c)
3. velocity v = dy/dt
acceleariton a = dv/dt = d^2y/dt^2
correct option is (d)
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