What is the period of the wave having amplitude 1.25cm and wavelength 2cm?

Answer 1

The amplitude has nothing to do with the period of the wave, but you do have to know its speed.

Period = (wavelength) / (speed)

If you're talking about sound, then the speed is 343 meters per second.

Period = (0.02) / (343) = 5.831 x 10-5 seconds = 0.00005831 second.

If you're talking about electromagnetic waves, then the speed is 300,000,000 meters per second.

Period = (0.02) / (300,000,000) = 6.67 x 10-11 second = 0.0000000000667 second.

Answer 2

The period of a wave is the time it takes for one complete cycle. It can be calculated using the formula T = 1/f, where T is the period and f is the frequency. Since frequency is the number of cycles per unit time, and wavelength is the distance of one complete cycle, the period can be calculated as T = 2 cm / velocity of the wave.