Physics, 26.02.2020 20:31 barkonatree

The intensity of electromagnetic waves from the sun is 1.4 kW/m2 just above the earth's atmosphere. Eighty percent of this reaches the surface at noon on a clear summer day. Suppose you model your back as a 25 cm * 52 cm rectangle. How many joules of solar energy fall on your back as you work on your tan for 0.90 h? Answer in Joules.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 12:40, live4dramaoy0yf9

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)

Answers: 2

continue

Physics, 22.06.2019 16:00, russboys3

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.

Answers: 1

continue

Physics, 22.06.2019 18:30, hannahkharel2

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s

Answers: 1

continue

Physics, 22.06.2019 21:10, bri9263

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.

Answers: 2

continue

You know the right answer?

The intensity of electromagnetic waves from the sun is 1.4 kW/m2 just above the earth's atmosphere....