What is the velocity of a wave with a frequency of 10 Hz and a wavelength of 2 m?
A. 0.2 m/s
B. 20 m/s
C. 5 m/s
D. 8 m/s
SUBMIT

B. 20m/s

Explanation:

The wavelength of a wave can be calculated using the formula;

λ = v/f

Where;

λ = wavelength (m)

v = velocity (m/s)

f = frequency (Hz)

According to the information provided in this question; the wave has a wavelength (λ) of 2m and a frequency (f) of 10Hz.

Using λ = v/f

v = λ × f

v = 2 × 10

v = 20m/s.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.