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A person makes a quantity of iced tea by mixing 500g of hot tea (basically water) with an equal mass of ice at its melting point. Suppose the mixture has negligible energy exchanges with its environment. If the tea's initial temperature is Ti = 90 degrees Celsius, when thermal equilibrium is reached what are (a) the mixture's temperature Tf and (b) the remaining mass mf of ice? If Ti = 70 degrees Celsius, when thermal equilibrium is reached what are (c) Tf and (d) mf?
A capacitor is connected across an ac generator whose frequency is755 Hz and whose peak output voltage is140 V. The rms current in the circuit is 3.0 A. What is the capacitance of the capacitor?
a tube is open only at one end. a certain harmonic produced by the tube has a frequency of 715 hz. the next higher
The current through a lamp connected across 120 V is 0.48 A. the resistance when the lamp is on is 250 ohm When the lamp is cold, What is the current through the cold lamp
A satellite with a mass of 310 kg moves in a circular orbit 3.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
A toroidal solenoid with mean radius r and cross-sectional area A is wound uniformly with N1 turns. A second toroidal solenoid with N2 turns is wound uniformly on top of the first, so that the two solenoids have the similar cross-sectional area and m..
A neighborhood transformer on the top of a utility pole transforms 14.0 kV 60.0 Hz alternating voltage down to 120.0 V to be used inside a house, how many turns does the primary coil have
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the combination.
A constant 80-N force acts on a 5.0 kg box. The box initially is moving at 20 m/s in the direction of the force, Determine both the work done by this force
If 5.0 moles of an ideal gas expands isothermally at 100 degrees C to 5.5 times its intial volume, then find heat flow into a system
A 1260kg car pushes a 2180kg truck that has a dead battery. When the driver steps on the accelerator, find the magnitude of the force the truck applies to the car
A mercury barometer reads 750 mm on the roof of a building and 766 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building
a 6.1 microc charge is placed at the origin and a -3.8 microc charge is placed at x 25 cm. at what coordinates can a
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