12. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0W of visible light energy. What are the efficiencies of these bulbs?A. Bulb A: 15%; Bulb B: 25%B. Bulb A: 6%; Bulb B: 10%C. Bulb A: 6.7%; Bulb B: 40%D. Bulb A: 60%; Bulb B: 10% PHYSICS FINAL12. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0W of visible light energy. What are the efficiencies of these bulbs?ABulb A: 15%; Bulb B: 25%B. Bulb A: 6%; Bulb B: 10%С.Bulb A: 6.7%; Bulb B: 40%D.Bulb A: 60%; Bulb B: 10%

Given: The reading of bulb A is 60 W. The reading of bulb B is 10 W. The output power is 4 W.

2. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0W of visible light energy. What are the efficiencies of these bulbs? A. Bulb A: 15%; Bulb B: 25% B. Bulb A: 6%; Bulb B: 10% C. Bulb A: 6.7%; Bulb B: 40% D. Bulb A: 60%; Bulb B: 10

2. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0W of visible light energy. What are the efficiencies of these bulbs? A. Bulb A: 15%; Bulb B: 25% B. Bulb A: 6%; Bulb B: 10% C. Bulb A: 6.7%; Bulb B: 40% D. Bulb A: 60%; Bulb B: 10

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 51PE: Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity....

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Concept explainers

Maxwell speed distribution

Maxwell-Boltzmann distribution or commonly known as Maxwell speed distribution, explains the division of the energy levels of the molecules of an ideal gas on the basis of the statistical theory. In 1859, Scottish physicist James Clerk Maxwell established the context for the distribution of molecular velocities for random molecules moving in a closed environment. This theory was generalized in 1871 by German physicist Ludwig Boltzmann. He improvised the theory to express the distribution of energy levels among different molecules.

Question

12. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0W of visible light energy. What are the efficiencies of these bulbs? A. Bulb A: 15%; Bulb B: 25% B. Bulb A: 6%; Bulb B: 10% C. Bulb A: 6.7%; Bulb B: 40% D. Bulb A: 60%; Bulb B: 10%

PHYSICS FINAL
12. Bulb A is a 60 W incandescent bulb and bulb B is a 10 W LED bulb. Both bulbs produce 4.0
W of visible light energy. What are the efficiencies of these bulbs?
A
Bulb A: 15%; Bulb B: 25%
B. Bulb A: 6%; Bulb B: 10%
С.
Bulb A: 6.7%; Bulb B: 40%
D.
Bulb A: 60%; Bulb B: 10%

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