11/10 Waves Review 1

Front

What is the equation for calculating wavelength if I know frequency and wave speed?

Back

λ=v/f

Answer explanation

The correct equation for calculating wavelength (λ) when you know frequency (f) and wave speed (v) is λ = v/f. This means wavelength is equal to wave speed divided by frequency.

Front

Speed of a wave with frequency 12 Hz and wavelength 2m?

Back

24 m/s

Answer explanation

The speed of a wave is calculated using the formula: speed = frequency × wavelength. Here, speed = 12 Hz × 2 m = 24 m/s. Therefore, the correct answer is 24 m/s.

Front

What is a Hertz?

Back

Number of waves per second

Answer explanation

A Hertz (Hz) measures the frequency of a wave, specifically the number of waves that pass a point in one second. Therefore, the correct answer is 'Number of waves per second'.

Front

Frequency of wave with wavelength 3m and speed 9m/s?

Back

3 Hz

Answer explanation

To find the frequency (f), use the formula f = speed (v) / wavelength (λ). Here, v = 9 m/s and λ = 3 m. Thus, f = 9 m/s / 3 m = 3 Hz. Therefore, the correct answer is 3 Hz.

Front

What is the wavelength of a wave with a speed of 24 m/s and a frequency of 4 Hz?

Back

6 m

Answer explanation

To find the wavelength (λ), use the formula λ = speed / frequency. Here, λ = 24 m/s / 4 Hz = 6 m. Thus, the correct answer is 6 m.

Front

If a wave travels 20 meters in 5 seconds, what is the speed of the wave?

Back

4 m/s

Answer explanation

To find the speed of the wave, use the formula: speed = distance / time. Here, speed = 20 meters / 5 seconds = 4 m/s. Therefore, the correct answer is 4 m/s.

Front

What equation do I use to find wave speed if I know frequency and wavelength?

Back

v=fλ

Answer explanation

To find wave speed (v), use the equation v = fλ, where f is frequency and λ is wavelength. This shows that wave speed is the product of frequency and wavelength, making v = fλ the correct choice.

Front

Wavelength of a wave moving at 16 m/s with a frequency of 4 Hz?

Back

4 m

Answer explanation

To find the wavelength, use the formula: wavelength = speed / frequency. Here, wavelength = 16 m/s / 4 Hz = 4 m. Thus, the correct answer is 4 m.

Front

What is the speed of a wave with a wavelength of 20m and a frequency of 3 Hz?

Back

60 m/s

Answer explanation

The speed of a wave is calculated using the formula: speed = wavelength × frequency. Here, speed = 20m × 3Hz = 60m/s. Therefore, the correct answer is 60 m/s.

Front

Frequency of a wave with wavelength 100m and speed 300m/s?

Back

3 Hz

Answer explanation

The frequency (f) of a wave is calculated using the formula f = speed / wavelength. Here, f = 300 m/s / 100 m = 3 Hz. Thus, the correct answer is 3 Hz.