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
Reptile [31]
2 years ago
12

A Carnot engine has an efficiency of 83.0% and performs 4500 J of work every cycle. How much energy is discharged to the lower t

emperature reservoir every cycle?
Physics
1 answer:
ololo11 [35]2 years ago
6 0

We will start by finding the heat in state one through the thermal efficiency or efficiency of a thermal machine is a coefficient or dimensionless ratio calculated as the ratio of the energy produced (in an operating cycle) and the energy supplied to the machine. Mathematically it is the relationship between the work generated and the heat emanated.

So,

\eta = \frac{W}{Q_1} \rightarrow Q_1 = \frac{W}{\eta}

Q_1 = \frac{4500}{0.83}

Q_1 = 5421J

The total change of energy is equivalent to 4500J and this is equal by conservation of energy to the total change in heat. So:

W = \Delta Q

W = Q_1-Q_2

4500 = 5421- Q_2

Q_2 = 921.68 J

Therefore the energy which is discharged to the lower temperature reservoir every cicle is 921.7J

You might be interested in
Two forces act on an object. The first force has a magnitude of 15.0 N and is oriented 78.0 ° counterclockwise from the + x ‑axi
bezimeni [28]

Answer:

c

Explanation:

fffkfkfk

4 0
3 years ago
During the storm a tree fell over into a river what might happen to the tree
mart [117]
The tree might get swept away by the current and it will disappear when it catches on something
4 0
3 years ago
What kind of tectonic plate boundary must have existed in the past where copper deposits are found, based on the way they are fo
Maksim231197 [3]

Answer:

older plates that are subducting almost perpendicularly, and when the location is far away from the edge of other tectonic plates, are the most likely areas for copper deposits to form

Explanation:

5 0
3 years ago
An area where the particles in a medium are spaced close together is called a _____.
Ksju [112]

An area where the particles in a medium are spaced close together is called compression.

3 0
3 years ago
Read 2 more answers
A weightlifter is attempting a biceps curl with a 200 n barbell. the moment arm of the barbell about the elbow joint is 40 cm. t
CaHeK987 [17]
Weight of the barbell W = 200 Ndistance of the joint is r = 40 cm = 0.4 mtorque created by the weight at the joint is                  τ = F*r                     = 200 N*0.4 m                     = 80 N.mat equilibrium condition ,    Στ = force*distance - 80 N.m = 0             F'*0.4 - 80 N.m = 0             F'*0.4 = 80          force F' = 200 N
4 0
3 years ago
Other questions:
  • The maximum wavelength For photoelectric emissions in tungsten is 230 nm. What wavelength of light must be use in order for elec
    5·1 answer
  • What causes an object to change its motion?
    9·1 answer
  • What are electric motors?
    14·1 answer
  • Physics questions please help me
    13·1 answer
  • Electrons orbit the nucleus in specific, defined paths. Each path has a specified energy. Bohr model electron cloud model Dalton
    10·2 answers
  • What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and emitting a steady 800-Hz sound from
    15·1 answer
  • Select all that apply. Which of the following are characteristics of acids? contain hydroxide ion or produce it in a solution ta
    15·1 answer
  • it is idea being transmitted by the sender to the receiver. it includes three aspects-content, structure, and style​
    14·1 answer
  • Critical mass depends on ___. Check all that apply.
    8·1 answer
  • When a car driving up a hill with constant speed: I. its kinetic energy is decreasing. II. its potential energy is constant. III
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!