Determine the new water temperature
27 g of copper pellets are removed from a 300 degree Celsius oven and immediately dropped into 110 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be?
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A train moving with constant velocity travels 180 north in 14 and an undetermined distance to the west. The speed of the train is 35. Find the direction of the train's motion relative to north.
Bonnie and Clyde are sliding a 315 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 379 of force while Bonnie pulls forward on a rope with 355 of force. What is the safe's coef
A commuter train travels between two downtown stations. Because the stations are only 1.38 km apart, the train never reaches its maximum possible cruising speed.
A proton moves at 4.5×10^6 m/s horizontally at a right angle to a magnetic field. What is the strength of the magnetic field required to exactly balance the weight of the proton and keep it moving horizontally? Answer in units of T.
A hotel elevator ascends 130 m with a maximum speed of 5.8 m/s. Its acceleration and deceleration both have a magnitude of 1.5 m/s2.
At the starting gun, a runner accelerates at 0.9 m/s2 for 4.1 s. The runner's acceleration is zero for the rest of the race.
If the collision is perfectly inelastic, calculate the speed and direction of the players just after the tackle.
A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 5.1 m waterfall. If the spy's speed is 19 m/s and the officials' sp
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