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A Carnot engine uses hot and cold reservoirs that have temperatures of 1850 and 845 K, respectively. The input heat for this engine is QH. The work delivered by the engine is used to operate a Carnot heat pump. The pump removes heat from the 845-K reservoir and puts it into a hot reservoir at a temperature T'. The amount of heat removed from the 845-K reservoir is also QH. Find the temperature T' in kelvins.
Two very large parallel sheets are 5.00 apart. Sheet carries a uniform surface charge density of -8.60 , and sheet , Find the magnitude of the net electric field these sheets produce at a point 4.00 to the right of sheet
A disk spinning with angular velocity , w=12 rad/s slows down to a stop in 4 seconds. What is the angular displacement delta theta
You are on a mysterious planet and notice that a 2.9 m long simple pendulum has a period of 2.6 s. Determine the planet's acceleration due to gravity
On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.7-kg basket of goodies beside her. A wolf came along, at what angle was Red Riding Hood pulling
A man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 42.0 above the horizontal. Calculate the horizontal distance from the base of the building
A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope
The temperature of 1.3 kg of water is 34° C. To cool the water, ice at 0° C is added to it. The desired final temperature of the water is 11° C. determine how much mass m of ice should be added
Put a 10 V battery with a 10 ? internal resistance in series with a switch: hook this up to a 100 ? resistor in parallel with a 2 H inductor. Find the initial voltage across the inductor when the switch is opened
A silicon solar cell looks like a battery with a 0.48V terminal voltage. what percentage of the energy incident on the cell is converted to electric energy
Suggest a proper answer with proof for if frequency of incident radiation is doubled, what will be the effect on maximum kinetic energy of photo electrons
An underwater scuba diver sees the Sun at an apparent angle of 26? from the vertical. What is the Sun's angle of inclination
In a young's double-slit experiment, light of wavelength 500 nm illuminates two slits which are separated by 1 mm. calculate the separation between adjacent bright fringes
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