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Suppose that an insulating container of negligible mass contains 0.12 kg of water at a temperature of 4 degrees C. Now suppose 178 g of ice initially at a temperature of -39 degrees C is added to the water. Assuming no transfer of heat to or from the surroundings, what is the final mass (in kg) of the water in the system?
A sprinter explodes out of the starting block with an acceleration of +3.5 m/s2, which she sustains for 1.0 s. What is her velocity at the end of the race
A person with perfect pitch sits on the bus bench listening to the 442 Hz horn of an approaching car. If the person detects a frequency of 479 Hz, how fast is the car moving.
the motion of a 25.0kg mass on the end of a string is uniform motion. the magnitude of the tangential velocity of the mass is 5.0m/s. calculate the angular momentum of the mass
It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). What is the angular speed of the earth
A 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, kinetic energy decreases to 240J from 470J. How high does she rise during this interval? Avoid air resistance.
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. How high up is Bob, if the ball started from exactly 2 m above the edge of the cliff
Differences between these two jurisdictions in terms of how juveniles are treated, with the system in Bremen being more lenient and "diversion-oriented" and the one in Colorado being more "punitive."
A particle has a charge of +2.3 ?C and moves from point A to point B, a distance of 0.13 m. The particle experiences a constant electric force, and its motion is along the line of action of the force.
What is the magnitude of the apparent weight of an 80-kg astronaut 5200-km from the center of the Earth's Moon in a space vehicle moving at constant velocity.
A 10cm -diameter cylinder contains argon gas at 10 atm pressure and a temperature of 60?C . A piston can slide in and out of the cylinder. What is the final length of the cylinder
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. find the magnitude and direction of the acceleration of the block
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