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Efficiency
Page 2
Questions (268)
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?
A.) 80% B.) 32% C.) 60% D.) 24%
3 answers
asked by
goodog
183 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.
4 answers
asked by
X
228 views
The energy output of a machine is 20j, if the efficiency of the machine is 80%, calculate the energy input
5 answers
asked by
Nana Nkuak
458 views
35min:2h simplified
3 answers
asked by
____
316 views
A hoist powered by a 10 kw motor is used to raise a bucket filled wirh concrete and having total mass of 500 kg to height of 80
4 answers
asked by
3b
924 views
A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the
4 answers
asked by
Unmei
932 views
Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00
4 answers
asked by
Allie
1,034 views
A fryer consumes an amount of electrical energy of 4400 kJ in 30 minutes. In 5 minutes, it provides a quantity of thermal energy
3 answers
asked anonymously
32 views
Which of the following explains different types of efficiency
code complexity refers to the number of characters in the code code
3 answers
asked anonymously
47 views
Idina claims she has a good metabolism. What does this MOST likely mean for Idina?
(1 point) Responses She can run faster than
2 answers
asked anonymously
170 views
Oiling bicycle chains or chainsaws is efficient at making the machines work better because the oil reduces
1 answer
asked by
A
91 views
A team of students builds a lever as a science project. They expend 10,300 Joules of energy to lift some bricks with the lever.
2 answers
asked by
the real BARNY THE DINO :)
279 views
Which car has the greatest efficiency?
11 answers
asked anonymously
763 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
357 views
A learning environment where you can learn the most in the least amount of time is best described by word?
Productive Effective
3 answers
asked anonymously
28 views
Combine the sentences by changing the italicized word group to an infinitive or infinitive phrase. Then write the complete
1 answer
asked by
Dyl
148 views
If the work input of a machine is 30 joules, when would be it efficiency when the output is 25 joules?l
1 answer
asked by
Afful Jennifer
110 views
A machine with velocity 30 move a load 3000 neuton when an effort of 200 neuton is applied what is the efficiency of the machine
1 answer
asked by
kalsidim
161 views
200 nodes are connected to a 1,500-meter length of coaxial cable. Using some protocol, each node can transmit 50 frames/second,
1 answer
asked by
selim
264 views
The authors describe efficiency as
A: the optimal use of resources.
1 answer
asked by
Lovely34
322 views
if an ox extracts only 50% of potential energy in grass and out of this if the ox used 40% to build up its body ,then the
1 answer
asked by
rebika
350 views
Assume a person expends mechanical energy at a rate of 450 W. If they were 15% efficient, what would be the rate at which he/she
1 answer
asked by
Ashley
411 views
It takes approximately 15 minutes to code one record. How many personnel hour would be needed to code 1424 discharges for the
1 answer
asked by
Linda
439 views
Eddie took 3over5 hours to finish a work but john finished the same work in 7over9hours who finished the work in less time .give
1 answer
asked by
sphe
450 views
A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the
2 answers
asked by
Unmei
772 views
When you complete a job, but use more time and effort than is truly necessary, how have you worked?
A. Effectively, but not
4 answers
asked by
tazkiyah30
988 views
When trying to increase efficiency, how can businesses benefit from using interchangeable parts?
1 answer
asked by
Jane :D
1,022 views
Which renewable energy source is the most efficient for power generation?
1 answer
asked by
Jungkook
214 views
Compare the efficiencies of a ramp that uses 2,000 joules of energy to do 1,200 joules of work and a lever that uses 102 kJ of
2 answers
asked by
Lost
2,771 views
How can efficient study habits improve learning outcomes?
1 answer
asked by
BunnySayRawr
1,316 views
If an economy produces its most wanted goods but uses outdated production methods, it is
--the answer is "it is not achieving
1 answer
asked by
Lily
847 views
When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the
5 answers
asked by
Leah
1,272 views
efficiency can best be defined as
1 answer
asked by
Anonymous
332 views
Argue the following statement: Despite our relatively high level of healthcare expenditure, we may still be getting enough for
3 answers
asked by
love
307 views
Do you guys know of any websites that talk about the efficienty of household appliances and how it has changed over the years?
Th
1 answer
asked by
rebekah
359 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
3 answers
asked by
Answer
111 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 60% 60% 32% 32%
3 answers
asked by
Answer
50 views
Efficiency can best be defined as
A. the amount of output generated in a given amount of time. B. producing items using the least
1 answer
asked by
Heather
405 views
Suppose a person metabolizes 2150 kcal/day.
a) With a core body temperature of 37.1°C and an ambient temperature of 21.3°C,
2 answers
asked by
melisa
512 views
example of work smarter, not harder. I need one sentence of how this phrase could apply to launching internet search.
4 answers
asked by
Sharon
331 views
If an allocation of resources is efficient, then
3 answers
asked anonymously
45 views
A machine has velocity ratio 5 and 80% efficient. What effort would be needed to loft a load of 200N with the aid of this
3 answers
asked anonymously
56 views
Please check my paragraph and tell me if I need to add more. I am supposed to write a paragraph which sustains iron tone.
3 answers
asked by
Jackie
619 views
1. I spend a lot of time looking for things.
2. I spend a lot of time in looking for things. 3. I spend a lot of time while/as I
2 answers
asked by
rfvv
485 views
if an engine must do 500 joules of work to pull a 10 kg load up to to a height of 4 meters ,what is the efficiency of the engine
1 answer
asked by
llulia
385 views
An important contribution of goals to your life is that they prevent a __________ of effort.
focusing concentration scattering
3 answers
asked by
ros
589 views
What term refers to the ratio of how many hours of labor it takes to produce a product-essentially the measure of a company's
3 answers
asked anonymously
63 views
10 sentence about perfect organisation
3 answers
asked by
ram
323 views
A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input
2 answers
asked by
Shannon
522 views
As a result of doing work, a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and
1 answer
asked by
Shannon
481 views
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