Energy from the Sun arrives at the top of the Earth's atmosphere with an intensity of 1.30 kW/m2. How long does it take for 1.97 109 J of energy to arrive on an area of 1.00 m2? This is the average monthly electrical energy consumption of a family of four in the United States.

Explanation:

The energy arriving in a specific area is defined as the radiating power multiplied by time:

#The radiating power delivered to a specific area equals the intensity per square unit area multiplied by the area:

#Equating the two expressions, we have:

#We then calculate the time it takes for the energy to be delivered:

Hence, it takes for the energy to be delivered.

so easy. just google the electromagnetic waves and it’ll pop up.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2