Answer:
497.6 N
Explanation:
From the question,
The net force on the skydiver = weight of the skydiver- the resistive force of air
F' = W-F...................... Equation 1
Where W = weight of the skydiver, F = resistive force of air.
But,
W = mg................ Equation 2
Where m = mass of the skydiver, g = acceleration due to gravity.
Substitute equation 2 into equation 1
F' = mg-F............ Equation 3
Given: m = 87 kg, F = 355 N, g = 9.8 m/s²
Substitute these values into equation 3
F' = 87(9.8)-355
F' = 852.6-355
F' = 487.6 N
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The energy of an ultraviolet photon is 2.6 times greater than a red photon.
<h3>
Energy of a photon</h3>
The energy of a given photon of light is calculated using the wavelength and the speed of light.
<h3>Energy of a red photon</h3>
The energy of the a red photon at the given wavelength is calculated as follows;
<h3>Energy of an ultraviolet photon</h3>
<h3>The ratio of the two energies</h3>
Thus, the energy of an ultraviolet photon is 2.6 times greater than a red photon.
Learn more about energy of a photon here: brainly.com/question/7464909
Answer:
I'm learning physics too, mabye we can learn together. by the way, the are 2 very good apps with physics : "khan academy" and "crash course"
