A2.0-m long piano string of mass 10 g is under a tension of 338 n. find the speed with which a wave travels on this string.

In physics lecture, we know that the formula for wave speed on a harmonic series is given as:

v = sqrt ( T / (M/L))

Where,

v = wave velocity in m / s = unknown

T = tension force in Newtons= 338 N

M/L = mass per unit length in kg / m = 0.01 kg / 2 m = 0.005 kg / m

Therefore substituting the given values to the equation will result in:

v = sqrt (338 N / (0.005 kg / m) )

v = sqrt (67,600 m^2 / s^2)

v = 260 m / s

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

more than, less

less than, more