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Dan (a very good sprinter) holds a 5.0-m-long ladder parallel to the ground. He then starts to run, eventually reaching 98% of the speed of light. How long is the ladder according to Carmen, who is standing on the ground as Dan goes by?
Romeo takes a uniform 11 m ladder and leans it against the smooth wall of the Capulet residence. The ladder's mass is 25.0 kg, and the bottom rests on the ground 2.8 m from the wall. When Romeo, whose mass is 73 kg, gets 90% of the way to the top, th..
A charged particle moves in a uniform magnetic field of 0.817 T with a period of 2.13 × 10-6 s. Find its charge-to-mass ratio.
A particle carrying a +51 μC charge moves at 36 meter per second through a uniform 0.85 T magnetic field. Obtain the direction of magnetic force on particle
the speed of hockey pick decreases from 45.00 to 44.67 m/s in coasting 16 m across the ice. find the coefficient of kinetic friction between the puck and the ice
A ball falls from the top of a building, through the air (air friction is present), to the ground below. How does the kinetic energy (K) just before striking the ground compare to the potential energy (U) at the top of the building? a. K is equal to ..
In the continuous-caster process, steel sheets 25.3 thick, 2.04 wide, and 11.0 long are produced at a temperature of 870. What are the dimensions of a steel sheet once it has cooled to 21.0?
Four copper wires of equal length are connected in series. The cross sectional areas are 1 cm2, 2 cm2, 3 cm2, and 5 cm2, What is the voltage across the 2 cm2 wire in units of volt
Calculate the distance between the stones, 2.5 second after the 2nd stone was dropped
Two cars collide at an intersection. Car A with a mass of 1800kg, is going from west to east, while car B of mass 1400kg, How fast was car A going just before the collision
an automobile battery has an emf of 12.6 v and an internal resistance of 0.0800 . the headlights together present
Richard is driving home to visit his parents. 140 mi of the trip are on the interstate highway where the speed limit is 65 mph. How many minutes does he save
A rope of length L = 5.2 m with a total mass of m = 0.205 kg is tied to a hook rigidly mounted into a wall. What is the height of the pulse that returns
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