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one end of a copper rod is in thermal contact with a hotresrvoir at T=500K, and the other end is in thermal contact with acooler resvoir at T=300K. If 8,000J of energy is transferred fromone end of the rod to the other, with no change in the temperaturede\istribution, find the entropy change of each reservoir and thetotal entropy change of the Universe.
An electron in the hydrogen atom is in an excited state given by (n=4, l=3, ml=2, ms=1/2). List the possible final states the system could be in after the emission of photon. Include in the list the energies of the photon.
The intensity of sunlight at the Earth's surface on a fairly clear day is 1000W/m2. [20pts], What is the maximum value of the electric field
At the end of a factory production line, boxes start from rest and slide down a 30 degrees ramp 5.4 m long. If the slide is to take no more than 3.3 s, what is the maximum coefficient of friction between the box and the slide?
A small mass is placed a distance r from the center of a flat, circular disk that can rotate about its center. At what frequency of rotation will the mass start to slide off
A series RCL circuit includes a resistance of 298 ohm, an inductive reactance of 648 ohm, and a capacitive reactance of 415 ohm. The current in the circuit is 0.634 Amps. What is the Voltage of the alternator?
The mass of a body is 50 kg on the surface of the earth.find its weight on the surface of a planet whose mass is double than the mass of the earth and radius is 5 times the radius of the earth
A net force of 25 newtons is applied horizontally to a 10. kilogram block resting on a table. What is the magnitude of the acceleration of the block
A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 20 cm. what will the image position be
A copper ball with a radius of 1.70 cm is heated until its diameter has increased by 0.160 mm. Assuming an initial temperature of 22.3°C, calculate the final temperature of the ball
A 41 kg crate, starting from rest, is pulled across a floor with the constant horizontal force of 250 N. For the first 10m the floor is frictionless, and for the next 11.00 m the coefficient of friction is 0.17. What is the final speed of the crat..
A series RLC circuit is connected across a 10.0 kHz source. The 1.2 H inductor and 1000 ? resistor are fixed whereas the capacitor is variable. What average power will be dissipated
If the shot is made from a horizontal distance of 5.10m and must be accurate to plus/minus 0.23m (horizontally) what is the range of initial speeds allowed to make a basket
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