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Efficiency
Page 4
Questions (268)
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
48 views
Which car has the greatest efficiency?(1 point)
Responses a 900 kg car that travels 15 km per liter of fuel a 900 kg car that
1 answer
asked anonymously
72 views
explain how each of the following simple machines can be made more efficient.
Lever: Pulley: Inclined Plane:
1 answer
asked anonymously
59 views
A rotating space heater used 1,400 joules of energy while heating a room. Of that total, 896 joules produced thermal energy, 181
1 answer
asked by
u dont know me
26 views
Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy
1 answer
asked by
u dont know me
19 views
The efficiency of a machine is 60%. Find in joules the workdone by a student using this machine to raise a load of 150kg through
1 answer
asked by
Peculiar
25 views
A rotating space heater used 1,400 joules of energy while heating a room. Of that total, 896 joules produced thermal energy, 181
1 answer
asked anonymously
41 views
A forklift uses 5200 J of energy to lift a 50.0 kg mass to a height of 4.0 m at a constant speed. What is the efficiency of the
1 answer
asked anonymously
18 views
If a machine requires an input of 6000 J of work to put out 5000 J of work, what is the machine's efficiency?
a. 40% b. 100% c.
1 answer
asked anonymously
22 views
A rotating space heater used 1,400 joules of energy while heating a room. Of that total, 896 joules produced thermal energy, 181
1 answer
asked by
protomanxsaxaphone
70 views
If a machine requires an input of 6000 J of work to put out 5000 J of work, what is the machine's efficiency?
a 100% b 83% c 120%
1 answer
asked anonymously
19 views
Which car has the greatest efficiency?(1 point)
1 answer
asked by
crickettheguy biggest fan 🦗 🦟🦗🦟🦗
33 views
If a machine requires an input of 600 J of work to put out 5000 J of work, what is the machine's efficiency?
efficiency= output
7 answers
asked anonymously
25 views
A rotating space heater used 1,400 joules of energy while heating a room. Of that total, 896 joules produced thermal energy, 181
1 answer
asked by
Blue Berry
109 views
Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy
1 answer
asked by
Blue Berry
94 views
What is the mathematical representation of a machine’s efficiency? (1 point)
Responses Efficiency=EiEo100 Efficiency equals
1 answer
asked by
u can't see me
27 views
Two machines are monitored for their efficiency. Machine A puts out 250J of work for every 800J of work input. Machine B
1 answer
asked anonymously
31 views
If a machine requires an input of 6000 J of work to put out 5000 J of work, what is the machine's efficiency? a 40% b 100% c
1 answer
asked by
red
58 views
Consider the efficiency of a machine. What would make one machine more efficient than another? Think of an example of an
3 answers
asked by
who
20 views
A rotating space heater used 1,400 joules of energy while heating a room. Of that total, 896 joules produced thermal energy, 181
1 answer
asked by
.
31 views
Which is the equation for a machine’s efficiency?(1 point) Responses Efficiency=output energyinput energy . 100
1 answer
asked by
.
25 views
What is the mathematical representation of a machine’s efficiency? (1 point)
Responses Efficiency=EoEi100 Efficiency equals
1 answer
asked by
Blue Berry
51 views
Your toaster is plugged into the counter electrical outlet. If 3.50 J of energy is supplied to the toaster to output 1.5 J of
1 answer
asked by
random
34 views
What is the efficiency of a light bulb if it produces 30 J of light energy, with an input of 120 J of electrical energy?(1
1 answer
asked by
random
19 views
which car has the greatest efficiency?
a 1,200 kg car that travels 15 km per liter of fuel? a 900 kg car that travels 20 km per
1 answer
asked by
scienze
83 views
An efficient simple machine is one that converts Response area into a useful form of Response area. For example, a pulley
1 answer
asked by
tim
62 views
fill in the blanks
An efficient simple machine is one that converts BLANK into a useful form of BLANK. For example, a pulley
1 answer
asked by
tim
35 views
What is it best to focus on to increase the advertising efficiency of your business?
Can one marketing message reach ALL
1 answer
asked by
Guest
49 views
Machine Output Work (J) Input Work (J)
A 750 1,500 B 1,000 4,000 C 450 600 D 3,000 5,000 Which machine has the highest
1 answer
asked by
joe
39 views
If a machine requires an input of 5000 Joules of input to do 2500 Joules of work, what is the efficiency of the machine?
Efficien
1 answer
asked anonymously
26 views
Question 23
Tito and Michael put 1200 joules of work into pushing a box up a ramp, but only 300 joules of work is output for
1 answer
asked anonymously
22 views
What does using technology to improve efficiency look like?
A. Utilizing group chats B. Track employee time C. Simplify daily
1 answer
asked by
raven
56 views
Tito and Michael put 1200 joules of work into pushing a box up a ramp, but only 300 joules of work is output for moving the box.
1 answer
asked anonymously
24 views
Tito and Michael put 1200 joules of work into pushing a box up a ramp, but only 300 joules of work is output for moving the box.
1 answer
asked anonymously
31 views
If your actual mechanical advantage is 10 J and the theoretical is 40 J, what is your percent efficiency? Hint: % Efficiency =
1 answer
asked anonymously
20 views
Tito and Michael put 1200 joules of work into pushing a box up a ramp, but only 300 joules of work is output for moving the box.
1 answer
asked anonymously
20 views
Differentiate productivity from output
1 answer
asked anonymously
9 views
What is the mathematical representation of a machine’s efficiency? (1 point) Responses
A. Efficiency=EiEo B. Efficiency=EoEi100
1 answer
asked by
.
37 views
A machine of efficiency 75%done 2,500J of work Fri tion bll(833•3J
1 answer
asked by
Jeneba
13 views
If your actual mechanical advantage is 10 J and the theoretical is 40 J, what is your percent efficiency? Hint: % Efficiency =
1 answer
asked anonymously
23 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
23 views
Explain how to calculate the efficiency of a toaster.
Include the terms "input energy," "output energy," "useful energy," and
1 answer
asked by
a helping hand
30 views
Which car has the greatest efficiency?(1point)
1 answer
asked anonymously
11 views
Which car has the greatest efficiency?(1 point)
Responses a 1,200 kg car that travels 15 km per liter of fuel a 1,200 kg car that
1 answer
asked by
Destinee
31 views
a rotating space heater used 1,400 joules of energy while heating a room. of that total, 896 joules produced thermal energy, 181
1 answer
asked anonymously
27 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
Destinee
19 views
Use the table to answer the question.
Machine Output Work (J) Input Work (J) A 750 1,500 B 1,000 4,000 C 450 600 D 3,000 5,000
1 answer
asked by
Destinee
31 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 80% 80% 24% 24%
1 answer
asked by
Destinee
20 views
Use the table to answer the question.
Machine Output Work (J) Input Work (J) A 750 1,500 B 1,000 4,000 C 450 600 D 3,000 5,000
1 answer
asked anonymously
42 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 anonymously
45 views
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