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
vichka [17]
3 years ago
7

A car engine burns gas at 495 K, and exhausts to the air at 293 K. If it ran at the highest possible efficiency, how much input

heat would it take to do 10,000 J of work? (Unit=J)
Physics
1 answer:
slamgirl [31]3 years ago
4 0

  The heat taken to do the 10,000 J of work is 4081 J

<u>Explanation:</u>

The ratio of the temperature difference between the reservoirs and the temperature of the hot reservoir is termed as maximum thermal efficiency.

Maximum thermal efficiency is

                                                   1 - (Tc / Th).

where Tc represents the  absolute temperature of the cold reservoir

           Th represents the absolute temperature of the hot reservoir.

                                                    1 - (293/495) = 0.408  

If the input is 10,000 J, then 4081 J is used to do work.  The remaining 5919 J is rejected as heat into the air.

You might be interested in
The pressure in a container will stay the same if you ——?
elena55 [62]
I think it’s D...not sure tho !
8 0
2 years ago
If one of the manual transmission's shafts is found to have not enough free play, then a thorough inspection must be performed t
frosja888 [35]

Answer:

False

Explanation:

4 0
2 years ago
Carbon-14 has a half-life of 5,700 years. How long will it take for 6.25% of the Carbon-14 to be remaining?
IRISSAK [1]

Answer:

22,800 years

Explanation:

Half life equation:

A = A₀ (½)^(t / T)

where A is the final amount,

A₀ is the initial amount,

t is time,

and T is the half life.

0.0625 = (½)^(t / 5700)

log 0.0625 = (t / 5700) log 0.5

4 = t / 5700

t = 22,800

It takes 22,800 years.

4 0
3 years ago
How does the matter and (solar) energy move through the sphere?
Tema [17]
When the Sun's energy moves through space, it reaches Earth's atmosphere and finally the surface. This radiant solar energy warms the atmosphere and becomes heat energy. This heat energy is transferred throughout the planet's systems in three ways: by radiation, conduction, and convection.
5 0
3 years ago
When the distance increases, the electrostatic force____; we call this relationship proportional
Alik [6]

Answer:

I think decreases inversely

Explanation:

the third

5 0
2 years ago
Read 2 more answers
Other questions:
  • An olympic hurdler accelerates at a rate of 15.5 m/s2 . what is the rate in miles/min2 ?
    7·2 answers
  • The fact that the magnetic field generates a force perpendicular to the instantaneous velocity of the particle has implications
    7·1 answer
  • Karen travels 10 mile in 1 hour. How many
    14·1 answer
  • What is matter? explain and give example
    14·1 answer
  • Question 5 (2 points)
    11·2 answers
  • Numerical filing method is more scientific why give me 4 reason ​
    14·2 answers
  • A circle is centered at C(0,0). The point M(0,38) is on the circle.
    14·1 answer
  • A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's i
    13·1 answer
  • Which statement about a Ferris wheel is true?
    9·1 answer
  • A juggler throws two balls to the same height so that one is at the halfway point going up when the other is at the halfway poin
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!