# Problem: The sun emits electromagnetic waves with a power of 4.0×1026 W.Part ADetermine the intensity of electromagnetic waves from the sun just outside the atmosphere of Venus. Refer to the following astronomical data:      Mean distance       from sun(m)         period(yrs)      Mass(kg)      Mean Radius(m)Venus  1.08 × 1011             .615            4.88 × 1024              6.06 × 106Mars    2.28 × 1011             1.88             6.42 × 1023               3.37 × 106Saturn 1.43 × 1012              29.5            5.68 × 1026               5.85 × 107 Express your answer using two significant figures.I = ________W/m2 Part B Determine the intensity of electromagnetic waves from the sun just outside the atmosphere of Mars.Express your answer using two significant figures.I = __________W/m2Part CDetermine the intensity of electromagnetic waves from the sun just outside the atmosphere of Saturn.Express your answer using two significant figures.I = _________ W/m2

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Part A

$\overline{){\mathbf{I}}{\mathbf{=}}\frac{\mathbf{P}}{\mathbf{4}\mathbf{\pi }{\mathbf{r}}^{\mathbf{2}}}}$

80% (232 ratings) ###### Problem Details

The sun emits electromagnetic waves with a power of 4.0×1026 W.

Part A
Determine the intensity of electromagnetic waves from the sun just outside the atmosphere of Venus. Refer to the following astronomical data:

Mean distance

from sun(m)         period(yrs)      Mass(kg)      Mean Radius(m)

Venus  1.08 × 1011             .615            4.88 × 1024              6.06 × 106

Mars    2.28 × 1011             1.88             6.42 × 1023               3.37 × 106

Saturn 1.43 × 1012              29.5            5.68 × 1026               5.85 × 107

Part B

Determine the intensity of electromagnetic waves from the sun just outside the atmosphere of Mars.