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After 6.00 kg of water at 70.0 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in entropy can be shown to be ?S = mc ln(Tf/Ti), where Ti and Tf are the initial and final Kelvin temperatures. Using this expression and the change in entropy for melting, find the change in entropy that occurs.
A rock is thrown from the roof of a building with a velocity v(0) at an angle alpha(0) of from the horizontal. Calculate the magnitude of the velocity of the rock just before it strikes the ground
An emf is induced in a conductin loop of wire 1.03 m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if change in shape occurs in 4.15s and the local 0.131-T magnetic field is vertical to the pla..
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 294 K. Determine the temperature of the well water
A square coil of wire with 15 turns and an area of 0.40 m2 is placed parallel to a magnetic field of 0.75 T. What is the magnitude of the average induced emf
A capacitor is charged with a 12.0V battery and is then connected to a 2.65 H inductor (at t=0sec) to form an oscillator with 12.0 Hz frequency.
A device is turned on and 3.00 A flows through it 0.100 ms later. What is the self-inductance of the device if an induced 150 V emf opposes this
A 35 kg uniform ladder is leaned against a building. The 5 m tall ladder makes an angle of 60 degrees with the ground. What is the maximum mass that the painter can have
in a diagnostic x-ray procedure 5x10^10 photons are absorbed by tissue with a mass of .6 kg. What is the equivalent radiation dose in mrem
In an EM wave the electric field oscillates 4 X 10^14 HZ at in the North - South direction. In what direction is the magnetic field oscillating
The international space station is orbiting at an altitud of 370km above earth's surface. The mass of the earth is 6x10^24kg, Assuming a circualr orbit, whit is the orbital speed of the space station
A 150? resistor is across a 24.0V battery. Find the energy supplied by the battery in 4min
You want to visit your friend Ford Prefect, who lives in the vicinity of Betelgeuse, 425 light-years from Earth (that is, light takes 425 years to arrive from Betelgeuse). What is the distance between Betelgeuse and Earth
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