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USPshnik [31]
3 years ago
7

9. If the frequency of a certain light is 3.8 x 10 Hz, what is the energy of this light?

Physics
1 answer:
ddd [48]3 years ago
8 0

Answer:

E = h*f = (6.63*10^-34) *( 3.8*10)

E = 2.5 *10^-32

Explanation:

e= Energy

h = Planck's constant

f = frequency

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Answer:

The 6.25 \times 10^{23} electrons are moving through the superconductor per second.

Explanation:

Given :

Current I = 1 \times 10^{5} A

Charge of electron e = 1.6 \times 10^{-19} C

Time t = 1 sec

From the formula of current,

Current is the number of charges flowing per unit time.

   I = \frac{ne}{t}

Where n = number of charges means in our case number of electrons

   n = \frac{It}{e}

   n = \frac{1 \times 10^{5} }{1.6 \times 10^{-19} }

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Therefore, 6.25 \times 10^{23} electrons are moving through the superconductor per second.

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Answer:

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Explanation:

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vodomira [7]

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