Physics for Scientists and Engineers with Modern Physics
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 33, Problem 14P

(a)

To determine

The power per unit area utilized by the family.

(b)

To determine

The power per unit area utilized by the car.

(c)

To determine

The reason due to which the solar energy is not use directly.

(d)

To determine

The practical uses of solar energy.

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(b) The renewable energy system on a house using solar panels is 18% efficient, and the panels receive an average of 800 Wm2 for 8 hours per day. Calculate how many panels that are each 1.6m2 (with negligible borders) are needed to supply 80% of a household's electricity needs. The household uses 4200 kWh per year (take a year to be 365 days. Assume power production and consumption are uniform throughout the year) Explain in one sentence the difference between solar thermal and solar photovoltaic technology.
In a hydroelectric dam, water falls 30.0 mm and then spins a turbine to generate electricity. You may want to review (Pages 234 - 238) . What is ΔUΔUDeltaU of 1.0 kg of water? Express your answer with the appropriate units.   Suppose the dam is 80% efficient at converting the water's potential energy to electrical energy. How many kilograms of water must pass through the turbines each second to generate 51.0 MWMW of electricity? This is a typical value for a small hydroelectric dam. Express your answer using three decimal places.
a)What is the area of a solar collector that could collect 110 MJ of energy in 1 hr? This is roughly the energy content of 1 gallon of gasoline. Express your answer with the appropriate units.

Chapter 33 Solutions

Physics for Scientists and Engineers with Modern Physics

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