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A 30-g silver teaspoon at room temperature 200C is placed into 200 g of hot tea 1000C. No heat escapes the spoon-tea system. You assume that the specic heat of tea is the same as that of water. The specic heat of silver is 0.0564 cal/g.K. What is the equilibrium temperature of the system?
Two spheres are 7.66 m apart, and each has the same amount of positive charge. what is the charge on each sphere
A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 4.1-kg block
An airplane starting from airport A flies 280 km east, then 365 km at 29.0° west of north, and then 130 km north to arrive finally at airport B.
Since Selma had so much fun, Arnold decides to take up sky diving as well. He falls out of the plane (with a parachute) and after a long time reaches a roughly constant speed of 55m/s. How far did he drop during that time
What is the magnitude of the centripetal acceleration.
Consider a volume of 4.8 cubic meters of gas initially at STP (0 degrees C and 1 atm pressure). what is the volume (in cubic meters) of the gas
A Carnot engine operates between temperatures of 747 and 324 K. Calculate what the efficiency would be if (a) the temperature of the hot reservoir were raised by 42.5 K or (b) if the temperature of the cold reservoir were lowered by 42.5 K. (Give ..
A diver makes 0.50 revolutions on the way from a 9.9-m-high platform to the water. find the diver's average angular velocity during a dive
Consider a Van de Graaff generator with a 30.0 cm diameter dome operating in dry air. what is the maximum potential energy of the dome
A single conservative force F(x) acts on a 1.1 kg particle that moves along an x axis. What is the maximum kinetic energy of the particle
you rub your hand across a small surface section of a pillow. The section of pillow acquires a net charge of -9.4 muC, Determine the net charge on your hand
A bicyclist rides 4.9 km due east, while the resistive force from the air has a magnitude of 3.4 N and points due west. Find the work done by the resistive force
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