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geniusboy [140]
3 years ago
6

How many photons with 10 ev are required to produce 20 joules of energy?

Physics
1 answer:
marta [7]3 years ago
7 0
Electron Volts (eV) are units of energy that are convenient for use in describing energy scales of particles. One electron Volt is equal to 1.6 x 10^-19 Joules. Therefore, ten electron Volts are equal to 1.6 x 10^-18 Joules. In order to produce 20 Joules of energy from 10 eV photons, we would need 20 / (1.6 x 10^-18) = 1.25 x 10^19 photons. 
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The energy photon affects which property of light
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Answer:

photoelectric effect

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What is Newton’s second law of motion
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"<em>F = m·A.</em>  The net force on an object is equal to the product of the object's mass and its acceleration."

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3 years ago
Read 2 more answers
Question 2.
choli [55]

Explanation:

1 inch = 25.4 mm

1 foot = 12 inches

1 mile = 5260 feet

1 cm = 0.01 m or 10 mm

Now Sammy's height is 5 feet and 5.3 inches.

(a) We need to find Sammy's height in inches.

Since, 1 foot = 12 inches

5 feet = 5 × 12 inches = 60 inches

Now, 5 feet and 5.3 inches = 60 inches + 5.3 inches = 65.3 inches

Sammy's height is 65.3 inches.

(b) We need to find Sammy's height in feet.

Since, 1 foot = 12 inches

1\ \text{inch}=\dfrac{1}{12}\ \text{feet}

So,

5.3\ \text{inch}=\dfrac{5.3}{12}\ \text{feet}=0.4416\ \text{feet}

5 feet and 5.3 inches = 5 feet + 0.4416 feet = 5.44 feet

Sammy's height is 5.44 feet.

3 0
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Natural causes are the reason for the recent warming trend of the average global temperature.
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The reasoning for this is false
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Which formula is used to find fluctuation of the shape of body
Sladkaya [172]

Answer:

varn=n1+1ehvkT–1

Explanation:

This is Einstein's equation.

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