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Q. 37

Expert-verified
Found in: Page 452

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

The sun emits electromagnetic waves with a power of 4.0 * 1026 W. Determine the intensity of electromagnetic waves from the sun just outside the atmospheres of Venus, the earth, and Mars.

The intensity of electromagnetic waves from the sun just outside the atmospheres of Venus is .

The intensity of electromagnetic waves from the sun just outside the atmospheres of Earth is .

The intensity of electromagnetic waves from the sun just outside the atmospheres of Mars is .

See the step by step solution

Given information

Power of electromagnetic wave is

The intensity of electromagnetic waves from the sun just outside the atmospheres of Venus

The intensity of the electromagnetic wave is given by .

The distance between the Sun and Venus is .

Substitute the given values

Therefore, the intensity of electromagnetic waves from the sun just outside the atmospheres of Venus is .

The intensity of electromagnetic waves from the sun just outside the atmospheres of Earth

The distance between the Sun and Earth is .

Substitute the given values into the equation

Therefore, the intensity of electromagnetic waves from the sun just outside the atmosphere of Earth .

The intensity of electromagnetic waves from the sun just outside the atmospheres of Earth

The distance between the Sun and Mars is .

Substitute the given values into the equation

Therefore, the intensity of electromagnetic waves from the sun just outside the atmosphere of Mars is .