A heat engine having an efficiency of 0.20 takes in 2000 J of energy from the hot reservoir in one cycle. In the same time, how much work will it perform?

A. 0 J
B. 33,333 J
C. 400 J
D. 1000 J
E. 120 J


Answer: C

Physics & Space Science

You might also like to view...

What information do we know about the known exoplanets?

A) estimates of orbits and masses B) complete composition C) precise masses D) All of the above E) None of the above

Physics & Space Science

One ______________ is defined as the distance to a star when the star exhibits a parallax of one second of arc

Fill in the blank(s) with correct word

Physics & Space Science

An RL series circuit has the following components: 5.0-mH coil, 4.8-W resistor, 12-V battery, ammeter, and switch. After the switch is closed for a long time, find the final value of the current

a. 12 A c. 2.5 A b. 2400 A d. 58 A

Physics & Space Science

Potential of Point-Charges: Three point charges, -2.00 ?C, +4.00 ?C, and +6.00 ?C, are located along the x-axis as shown in the figure. What is the electric potential (relative to infinity) at point P due to these charges? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) 

A. -307 kV B. +307 k V C. -154 kV D. +154 kV E. 0.00 kV

Physics & Space Science