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A 520 W Carnot engine operates between constant-temperature reservoirs at 109°C and 67°C.
(a) What is the rate at which energy is taken in by the engine as heat?
(b) What is the rate at which energy is exhausted by the engine as heat?
Two capacitors are connected to a battery. The battery voltageis V = 50 V, and the capacitancesare C1 = 2.00 μFand C2 = 4.00 μF. Determine the total energy stored by the two capacitors when they arewired (a) in paralleland (b) in series.
a 1kg mass hangs from a cord wrapped around a solid disk pulley with a mass of 3kg and radius 25cm. the cord is 2m long
A particle moves along the x axis. It is initially at the position 0.270 m, moving with velocity 0.070 m/s and acceleration -0.410 m/s2. Find its velocity at the end of this time interval
A diver releases an air bubble of volume 2.2 cm3 from the depth of 10 m below the surface of a lake, where the temperature is 7°C. What is the volume of bubble when it reaches just below the surface of the lake, where temperature is 25°C.
A thin rod consists of two parts joined together. One-third of it is silver and two-thirds is gold. The temperature decreases by 31.3 C°. Determine the fractional decrease ?L/(LSilver + LGold) in the rod's length, where LSilver and LGold are the init..
A typical lightning flash delivers about 30C of negative charge from cloud to ground. How many electrons are involved
After a tornado, a 0.60g straw was found embedded 3cm into the trunk of a tree. If the average force exerted on the straw by the tree was 90N, what was the speed of the straw when it hit the tree.
In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. What will be the vertical position of the boat
an ac generator supplies 20 a at 440 v to a 10000 v power line. if the step up transformer has 150 turns in its
A cubic container is at rest on a rough horizontal warehouse floor. determine the minimum horizontal force that must be applied to the top of the container to cause tipping
After reaching its maximum height, the ball moves into the hoop on its downward path, at 3.05 m above the ground. Using the principle of energy conservation,
A thermodynamic system is operated at a constant pressure of 2 atm. Initially the volume of the system is 1m3. How much work is done by the system
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