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
Sholpan [36]
3 years ago
10

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules?

Physics
1 answer:
Inga [223]3 years ago
5 0

The answer is 25% because 50,000 is 25% of 200,000

You might be interested in
Which of the following correctly describes the relationship between speed and velocity?
Fofino [41]

Answer:

The answer is B

Explanation:

4 0
3 years ago
Ok plz answer and tell me how to do it
kirza4 [7]
Answer: 25N

method: total force in the right hand direction is 100N and total force in the left hand direction is 125N. To get the net force, we add forces if they are in the same direction and substract if they are in opposite directions. since 100N and 125N are in opposite directions, we substract the larger value from the smaller value. Then we get 25N in the left hand direction as the final answer.
4 0
3 years ago
Andre, whose mass is 77.1 kg, sits on a diving board above a dunk tank. If he is sitting 0.90 m above the water, what is his tot
Ganezh [65]

Answer:

680 J

Explanation:

Mechanical energy = potential energy + kinetic energy

ME = PE + KE

ME = mgh + ½ mv²

ME = (77.1 kg) (9.8 m/s²) (0.90 m) + ½ (77.1 kg) (0 m/s)²

ME = 680 J

8 0
3 years ago
Read 2 more answers
According to the law of conservation of matter,the number of ______ is not changed by a chemical reaction
abruzzese [7]
The answer is mass. I have to comment more than 20 characters.
6 0
3 years ago
Read 2 more answers
How is displacement different from distance?
Anni [7]

Answer:

i do belive its C

Explanation:

i remeber this question from somewhere also it makes the most sense

5 0
3 years ago
Read 2 more answers
Other questions:
  • The density of water is:
    10·1 answer
  • The description for a certain brand of house paint claims a coverage of 475 ft²/gal.
    8·1 answer
  • If you push a 1000 kg box so in 2 seconds its velocity changes from 5m/s to 10 m/s how much force do you have to apply?
    7·1 answer
  • Ryan wants to identify an element. Which piece of information would best help Ryan identify the element?
    14·2 answers
  • A rock is thrown into a swimming pool that is filled with water at a uniform temperature. As the rock moves beneath the pool's s
    11·1 answer
  • Cellus<br> Find the x-component of this<br> vector:<br> 92.5 m<br> 32.0
    13·1 answer
  • How is mass of the body measured ? Define one second ?
    10·1 answer
  • What happens at the end of most cold currents?​
    13·2 answers
  • 7 principles of Exercise and Sports Training
    12·2 answers
  • PLEASE HELP ME!!!!! You draw an arrow from left to right on a piece of paper and place the paper well behind a glass of water. Y
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!