Question 2
1 answer:
5.77 × Hz is the green photon's frequency .
The distance between similar points (adjacent crests) in adjacent cycles of a waveform signal that is propagated in space is known as the wavelength. A wave's wavelength is often measured in meters (m), centimeters (cm), or millimeters (mm) (mm). The relationship between frequency and wavelength is inverse.
<h3>Given:</h3>Wavelength of green light = 520 nm
f = c / λ
where, f = Frequency
c = Speed of light = 3 × m/s
λ = Wavelength of light
∴ f = c / λ
f =
= 5.77 × Hz
Therefore, 5.77 × Hz is the green photon's frequency .
Learn more about wavelength here:
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<h2>Hello!</h2>
The answer is: B. Kinetic energy
<h2>Why?</h2>Since the ball is falling, speed increases because the gravity acceleration is acting. When speed increases, the kinetic energy increases too, so the ball is gaining kinetic energy.
The gravity acceleration is equal to , it means that when falling, the ball will increase it's speed 9.81m every second.
We can calculate the kinetic energy by using the following formula:
Where:
Have a nice day!
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