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Energy Efficiency
Page 3
Questions (193)
it takes about 560 kilowatts to run a diesel locomotive at speed around 180km/h.Magnetically levitated trains(mag levs) on the
1 answer
asked by
Anonymous
463 views
While solar energy powered home systems are quite expensive to install, adding some passive energy features to conventional
3 answers
asked by
Karola
444 views
solve this puzzle......
LLL (relating to energy resources)
1 answer
asked by
Yosimitee
427 views
it takes about 560 kilowatts to run a diesel locomotive at speed around 180km/h.Magnetically levitated trains(mag levs) on the
1 answer
asked by
christie
435 views
Recommended Levels of Insulation (excerpt I)
U.S. Environmental Protection Agency 1Improving your home’s insulation and sealing
1 answer
asked anonymously
47 views
Recommended Levels of Insulation (excerpt I)
U.S. Environmental Protection Agency 1Improving your home’s insulation and sealing
1 answer
asked anonymously
51 views
Which of the following is an example of how green roofs help save costs? (1 point)
• Green roofs improve air quality. • Green
1 answer
asked anonymously
38 views
Cars, trucks, and buses use petroleum—which is a fossil fuel—to power them. Mrs. Cash has a class of 20 students. Half of
1 answer
asked by
mr. fox
24 views
What is the main idea of this passage?
Responses A In order to help preserve and protect our environment, builders should
1 answer
asked anonymously
28 views
Sara is working on making her house more eco-friendly. She has a number of upgrades she wants to make such as replacing her
1 answer
asked anonymously
39 views
A team of students build a lever as a science project they expend 10,300 J of energy to lift some bricks with the lever if 6283
1 answer
asked anonymously
23 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
Responses A greater amount of energy
1 answer
asked by
poop
46 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
Responses A smaller amount of energy
1 answer
asked anonymously
40 views
A household uses 1, 100 kilowatt-hours of electricity in one month. After buying new energy-saving appliances, they reduced
1 answer
asked anonymously
28 views
All of the following are incentives for individuals to start using more efficient fuels EXCEPT: (1 point) Responses Tax credits
1 answer
asked anonymously
34 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?
1 answer
asked anonymously
44 views
Which is the equation for a machine's efficiency?
A. Efficiency = input energy + output energy B. Efficiency = output energy/
1 answer
asked anonymously
27 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs? (1 point)
A greater amount of energy is
1 answer
asked anonymously
63 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs? (1 point)
A. A greater amount of energy is
1 answer
asked anonymously
52 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
1 answer
asked by
Ellie
104 views
In 1–2 sentences, explain how to calculate the efficiency of a toaster.
1 answer
asked by
Blue Berry
142 views
Use the following formula to find the efficiency of energy
transfer between the harbor seal (2,500 Kcal) and a polar bear (375
1 answer
asked anonymously
25 views
In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.)(1 point)
Responses a
1 answer
asked by
joe
28 views
A circuit in a home provides power to a light fixture. The homeowners want to use a compact fluorescent bulb instead of an
1 answer
asked anonymously
61 views
In 1–2 sentences, explain how to calculate the efficiency of a toaster.(2 points)
1 answer
asked anonymously
26 views
Which machine has the highest efficiency?
1 answer
asked anonymously
12 views
In 1-2 sentences explain how to calculate the efficiency of a toaster
1 answer
asked anonymously
27 views
In 1–2 sentences, explain how to calculate the efficiency of a toaster.(2 points)
1 answer
asked by
.
21 views
Explain why the efficiency of a machine is less than 100%
1 answer
asked by
Jeneba
19 views
True or false
Efficiency is the ratio of output power to input power
1 answer
asked anonymously
18 views
17. Suppose a family replaces ten 60-watt (0.06 kW) incandescent bulbs with ten 30-watt (0.03 kW) fluorescent bulbs. If each
1 answer
asked anonymously
63 views
Which is the equation for a machine’s efficiency?(1 point)
Responses Efficiency=input energyoutput energy ⋅
1 answer
asked anonymously
26 views
Which statement describes a design factor that should be included in an energy-efficient home built in cold climates? (1 point)
�
1 answer
asked anonymously
34 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
Responses A smaller percentage of the
1 answer
asked anonymously
26 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
Responses A smaller percentage of the
1 answer
asked anonymously
72 views
Recommended Levels of Insulation (excerpt I)
U.S. Environmental Protection Agency 1Improving your home’s insulation and sealing
1 answer
asked anonymously
27 views
Which car had the greatest efficiency
1 answer
asked anonymously
9 views
Use the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375
1 answer
asked anonymously
37 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)
Responses A greater percentage of the
1 answer
asked by
Destinee
22 views
In 1–2 sentences, explain how to calculate the efficiency of a toaster.(2 points)
1 answer
asked anonymously
15 views
what is the equation for a machines efficiency
1 answer
asked anonymously
17 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?
A) a smaller amount of energy is wasted by the
1 answer
asked by
Efficiency of Machines Quick Check
55 views
Use the scenario to answer the question Edwin Baz, a water bottle, reuses it twice and then recycles it. Eleanor buys a water
1 answer
asked anonymously
30 views
In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.)(1 point)
Responses a
1 answer
asked by
Goober Man
22 views
A circuit in a home provides power to a light fixture. The homeowners want to use a compact fluorescent bulb instead of an
1 answer
asked by
...
24 views
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?
A. A greater percentage of the energy output
1 answer
asked anonymously
57 views
Hey circuit in a home provides power to the light fixture. The homeowner wants to use a compact fluorescent bulb instead of an
1 answer
asked anonymously
36 views
Which statement describes a design factor that should be included in an energy-efficient home built in cold climates?
A.
7 answers
asked by
MLASSSPE
36 views
A machine is said to have low efficiency if it experiences a lot of energy loss to heat. How can a machine be made more
1 answer
asked anonymously
18 views
Question
Which car has the highest efficiency? (Assume all cars have the same mass.) Responses a car that traveled 20 kilometers
1 answer
asked anonymously
13 views
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