You dip your finger into a pan of water twice each second, producing waves with crests that are separated by 0.15 m.
a) determine frequency of these water waves in units of Hz??
b) determine the period of these water waves in units of s. ??
c) determine the speed of these water waves in units of m/s??????
Frequency is 2hz
wavelentth is .15m
speed=freq*wavelength
a) Twice per second is 2 Hz. Literally. "Hz" means "per second".
b) The period (in seconds) is one divided by the frequency (in Hz).
c) Wave speed is wavelength (0.15 m in this case) multipied by the frequency.
To find the answers, we need to use the formulas that relate frequency, period, and wave speed.
a) The frequency (f) is the number of waves passing a point per unit of time. In this case, you dip your finger into the water twice each second, so the frequency is 2 Hz.
b) The period (T) is the time it takes for one complete wave to pass a point. It is the reciprocal of the frequency, so T = 1/f. In this case, T = 1/2 s.
c) The speed of a wave (v) is calculated by multiplying the wavelength (λ) by the frequency (f). We are given the separation between crests, which is the wavelength, represented by λ. So, v = λ * f. In this case, λ = 0.15 m, and f = 2 Hz. Thus, v = 0.15 m * 2 s^(-1) = 0.3 m/s.