Q: What is the frequency of a wave that has a period of 40 seconds?

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Frequency = 1 / (period) = 1/.4 = 2.5 Hz

t = 0.025 s Then f = 1/t f = 1/0.025s f = 40^(-s) or 40 Hz.

The period of a simple pendulum of length 20cm took 120 seconds to complete 40 oscillation is 0.9.

It seems you are talking about radio waves. The wavelength (40 m) multiplied by the frequency (7 million / second) must equal the speed of light (300 million meters/second). It seems that in this example numbers, either the wavelength or the frequency, or both, are not expressed with a great accuracy. For example, if 40 meters is exact, the frequency would be close to 7.5 MHz.

1,000,000 seconds = 277:40:40 277 hours , 40 minutes and 40 seconds

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The frequency of a pendulum is the reciprocal of its period, so a pendulum with a period of 40 seconds will have a frequency of 0.025 Hz.

The period of a 40 Hz wave is 0.025 seconds. This means that it takes 0.025 seconds for one full cycle of the wave to complete.

Frequency = 1 / (period) = 1/.4 = 2.5 Hz

The frequency of a wave is the reciprocal of the period. In this case, the frequency would be 1 divided by 25 milliseconds, which equals 40 Hertz (Hz).

A sound wave with a frequency of 125 Hz has a wavelength of 40 meters (speed = frequency x wavelength). At a speed of 5000 m/s, this sound wave would have a period of 0.08 seconds (period = 1 / frequency).

The period of a sound wave is the time it takes for one complete cycle of the wave to pass a certain point. For a 40 kHz sound pulse, which has a frequency of 40,000 Hz, the period would be 1/40,000 seconds, which is equal to 25 microseconds.

The frequency of the wave can be found using the formula: frequency = wave speed / wavelength. Given that the wave speed is 40 cm/s and the wavelength is 8 cm, the frequency would be 40 cm/s / 8 cm = 5 Hz.

To find the frequency of the wave, you can use the formula: frequency = speed / wavelength. Given the speed is 40 cm/s and the wavelength is 8 cm, you can calculate the frequency as 40 cm/s / 8 cm = 5 Hz.

The frequency of the wave can be calculated using the formula: frequency = speed / wavelength. Plugging in the values, the frequency would be 40 m/s / 4 m = 10 Hz.

The speed of a wave is equal to the product of wavelength x frequency. Just convert everything to standard units (wavelength to meters, frequency to hertz), multiply both, and you'll get the result, also in standard units (meters / second).

t = 0.025 s Then f = 1/t f = 1/0.025s f = 40^(-s) or 40 Hz.

You are supposed to use the basic formula for waves: speed = wavelength x frequency. In this case, you have to solve for frequency. (The period is the reciprocal of the frequency.)