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There are two answers required for this question. An engine operates between temperatures of 280 K and 700 K at 62.0 % of its maximum efficiency.
a. What is the efficiency of the engine?
b. If 5.90x103 J is exhausted to the low temperature reservoir, how much work does the engine do?
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30 . At 30.0 after blastoff, the engines suddenly fail, How high above the launch pad will the rocket eventually go
A rock is thrown vertically upward with a speed of 19.0m/s from the roof of a building that is 70.0m above the ground. What is the speed of the rock just before it strikes the ground
A converging lens witha focal length of 12.0cm forms a virtual image 8.50mm tall, 18.0cm to the right of the lens. Determine the size of the object
Four identical charges (+2.2 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
Two parallel plates each of area 7.00 cm^2 are seperated by 3.50 mm of water The electric field between the plates has a magnitude of 2290 N/C, what is the charge stored on each plate
One mole of neon gas is heated from 364 Kto 410K at constant pressure. Calculate the change in the internal energy of the gas
A tuning fork is sounded above a resonating tube (one end closed) which resonates at a length of 0.32 m and again at 0.91 m. What is the frequency of the fork
A husband buys a helium-filled anniversary balloon for his wife. The balloon has a volume of 3.0L in the warm store at 74?F. By how much has the volume decreased
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
The reserve capacity (RC) of a car battery is defined as the number of minutes the battery can provide 25.0A of current at a potential difference of 10.5V.
A boy 10.0 m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. How far from the tree will the dog catch the ball
A baseball approaches home plate at a speed of 46.0 m/s, moving horizontally just before being hit by a bat. What is the average vector force the ball exerts on the bat during their interaction
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