1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
daser333 [38]
3 years ago
6

A gasoline engine receives 200 J of energy from combustion and loses 150 J as heat to the exhaust. What is its efficiency? 75% 2

5% 33% 125%
Physics
2 answers:
choli [55]3 years ago
8 0
50/200×100%=25% is answer the formula is usefull energy output divided by total energy provided into 100%
rjkz [21]3 years ago
7 0
25%.

Efficiency, in this case, means the work done...
Heat is a by-product of combustion and is lost energy. What remains the work done by the engine.

Our of 200 J, only 50 J are left out of 200 J.

So, 50 J remaining divided by 200 total I

50/200 = 1/4 = 25%

If you have any questions then please comment.
You might be interested in
I need help can any one help me please and I dont have a lot of time it has a timer on me
sweet [91]

the answer is gas.......

7 0
3 years ago
Read 2 more answers
Help me with this PLEASE, I'M being timed
juin [17]

Answer:

C

Explanation:

6 0
3 years ago
an experiment is set up to measure the effect of a gasoline additive on fuel consumption rate. what would be the control in this
Tamiku [17]
The control setup in this experiment would be one tank that does not contain any of the additives. Since the tanks with the gasoline additives would need to be compared with a tank that is not affected by the results of these additives.
4 0
3 years ago
What is the relationship between an object’s mass and its gravitational potential energy?.
antiseptic1488 [7]

Answer:

If we’re talking about objects on the Earth, the gravitational potential energy is given by:

Explanation:

PEg=mgh

so the energy is proportional to the mass ( m ), but also to the strength of the gravitational field ( g ), and the height ( h ) to which the mass is lifted.

5 0
2 years ago
Rachel and Sarah are on a bus travelling at 5 mph past John who is standing on the sidewalk. Rachel then throws a ball
oksian1 [2.3K]

Answer:

I think C

Explanation:

Since the bus is moving away from John.

{C - V}.

5 0
2 years ago
Other questions:
  • A typical machine tests the tensile strength of a sheet of material cut into a standard size of 5.00 centimeters wide by 10.0 ce
    12·1 answer
  • A seaside cliff is 30 m above the ocean surface, and Sam is standing at the edge of the cliff. Sam has three identical stones. T
    8·1 answer
  • A small particle starts from rest from the origin of an xy-coordinate system and travels in the xy-plane. Its acceleration in th
    12·2 answers
  • What would happen if the sun suddenly became a black hole without changing its mass?
    8·1 answer
  • Which of the following is the most likely end for a star that is small to average in size? A. blue main sequence B. red supergia
    5·2 answers
  • Some sports or activities you can do to improve your overall health and how physical activity can improve your
    9·1 answer
  • What test are included in the Physical Fitness Test?
    8·1 answer
  • Pleaseeee help I really need to pass to graduate
    13·1 answer
  • Long flights at midlatitudes in the Northern Hemisphere encounter the jet stream, an eastward airflow that can affect a plane’s
    5·1 answer
  • Would young rocks be found near a volcano?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!