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Chapter 31: Q. 44 (page 903)

The intensity of sunlight reaching the earth is1360W/m2.

a. What is the power output of the sun?

b. What is the intensity of sunlight reaching Mars??

Short Answer

Expert verified

a. Power output of the sun is 3.85脳1026W.

b. Intensity of sunlight of mars is589W/m2.

Step by step solution

01

Given information

Intensity of sunlight reach the earth isIavg=1360W/m2.

Distance between sun and earth isd=150脳109m.

Distance between mars and sun isd'=228脳109m.

02

Calculation for power output (part a)

a.

Intensity is,

Iavg=PA

P=I脳A

Substitute all values,

localid="1649960380573" P=1360Wm2脳4蟺150脳1092m2

P=3.85脳1026W

03

Calculation for intensity of mars (part b)

b.

Intensity is,

I=PA

I=P4蟺诲'

localid="1649960411995" I=3.85脳1026W4蟺228脳1092m2

localid="1649960499973" I鈮�589W/m2

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