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A heat engine does 2700 Joule of work with an efficiency of 0.22.
Part A. Obtain the heat taken in from the hot reservoir.
(kJ)
Part B. Obtain the heat given off to the cold reservoir.
0.5m side wooden cube floats on the lake surface with 2/3 of the cube submerged under the water. calculate the minimum work down on the cube that would sink it?
A piece of lead [c = 128 J/(kg·C°)] is heated from 18.0 °C to 40.1 °C. The same amount of heat is added to a piece of copper [c = 387 J/(kg·C°)]. find the final temperature Tf of the copper
a parallel-plate capacitor is formed from two circular 12.5-cm-diameter plates spaced 1.0 mm apart. the electric field
Find the speed parameter and Lorentz factor for an electron that has a kinetic energy of 5.00 keV.
Eratosthenes measured the circumference of the Earth by noting that the Sun is at an angle of 7°12' = 7.2° ("one-fiftieth of a circle") south of the vertical in Alexandria at the same time of day, What was Eratosthenes percent error
a 281 ball is tied to a string. it is pulled to an angle of 3.6 and released to swing as a pendulum. a student with a
A satellite is in a circular orbit around an unknownplanet. The satellite has a speed of 1.60 x 104m/s, and the radius of the orbit is 5.45 x 106 m. What is the orbital speed of the second satellite
A 0.15 kg ball hits a wall with a velocity of (4.00 m/s) + (6.50 m/s) + (5.00 m/s) . It rebounds from the wall with a velocity of (2.00 m/s) + (3.50 m/s) + (-3.20 m/s). What is the change in the ball's momentum
If an amount of heat Q_H is extracted from a hot reservoir (at temperature T_H) but is simply wasted by dumping into a cold reservoir, by how much has the entropy of the Universe increased
A source of radio waves is emitted from the center of our galaxy 1.8 x 104 light years away. How much power do the radio waves carry
a golfer imparts a speed of 30.0 ms to a ball and it travels the maximum possible distance before landing on the green.
A bicycle wheel has radius of 0.4 m. If it rolls starting from rest with linear acceleration of 4 m/s^2 for a time of 5 seconds . What will be its angular displacement in radians?
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