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
Alex787 [66]
3 years ago
5

An engine takes in 200 J of heat, expels 40 J of heat, and does 160 J of work. What is the efficiency of the engine?

Physics
1 answer:
Reil [10]3 years ago
4 0
The answer would be C. 80%
Put 160 over 200 and find the GCF
160/200÷40=4/5=80%

You might be interested in
What planet has an eleven hundred degree difference from one side to the other.
kirza4 [7]
The planet Mercury. Hope this helps
4 0
2 years ago
11)
Vikki [24]

Answer:

salt w nulas...........

6 0
3 years ago
What is the meaning of life?
valentina_108 [34]
1. Life is meaningless.
2. 42
3 0
3 years ago
Read 2 more answers
A force did 80 j of work on an object in 4 m how big was the force
yanalaym [24]

Work = (force) x (distance)

80 J = (force) x (4 m)

Force = (80 J) / (4 m)  =  20 N

That's IF the force was in the same direction as the 4m of motion.
If the force was kind of slanted, then it had to be stronger, and
it had a component of 20N in the direction of the motion.

3 0
3 years ago
a concrete slab 20 m long and weighing 400,000 N is supported by one pillar. A 19,600 N car is parked 8 meters from one end, whe
Elden [556K]

let the distance of pillar is "r" from one end of the slab

So here net torque must be balance with respect to pillar to be in balanced state

So here we will have

Mg(r - L/2) = mg(L/2 - 8)

here we know that

mg = 19600 N

Mg = 400,000 N

L = 20 m

from above equation we have

400,000(r - 10) = 19,600 (10 - 8)

r - 10 = 0.098

r = 10.098 m

so pillar is at distance 10.098 m from one end of the slab

3 0
3 years ago
Other questions:
  • How much power is expended if you lift a 60 n crate 10 meters in 1 second?
    6·1 answer
  • The gravitational force exerted by the Sun on the Earth is __________ the gravitational force exerted by the Earth on the Sun.
    11·2 answers
  • What is the difference between 3.15 m and 2.006 m with the correct number of significant figures
    12·2 answers
  • The radar gun measures the frequency of the radar pulse echoing off your car. By what percentage is the measured frequency diffe
    7·1 answer
  • What is the formula for the third law of newton and what does it state?​
    7·2 answers
  • HELPPPP LOOK AT THE SCREENSHOT TO ANSWER THE QUESTIONS
    5·1 answer
  • Why would an older house have more safety risks then a newer house
    15·2 answers
  • Which of the following can be used as a measure of an object's inertia?
    13·1 answer
  • The table above lists the wavelength range, frequency range, possible uses, and hazards of the seven types of electromagnetic ra
    8·1 answer
  • The horizontal surface on which the block of mass 2.2 kg slides is frictionless. The force of 27 N acts on the block in a horizo
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!