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A track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis. A toy train of mass m = 0.150 kg is placed on the track and, with the system initially at rest, the train's electrical power is turned on. The train reaches a steady speed 0.14 m/s with respect to the track. What is the angular speed of the wheel if its mass is 1.4m and its radius is 0.40 m? (Treat the wheel as a hoop, and neglect the mass of the spokes and hub.) Answer in (rad/s).
A charge of +6.0µC experiences a force of 2.0 mN in the +x-direction at a certain point in space. What was the electric field there before the charge was placed there
A 0.840-kg block oscillates on the end of a spring whose spring constant is k= 42.0 N/m . The mass moves in a fluid which offers a resistive force F=-bv, where b = 0.640 N*s/m. What is the fractional decrease in amplitude per cycle?
A mountain climber jumps a 3.0m wide crevasse by leaping horizontally with the speed of 8.00 m/s. If the climber's direction of motion on landing is 45 degrees, what is height difference between the two sides of the crevasse? Where does the climbe..
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
Three insulating balls are suspended from thin threads. Various objects are then rubbed against other objects and each of the insulating balls is charged by touching them with one of these objects. In each case.
A 50 hard-boiled egg moves on the end of a spring with force constant . It is released with an amplitude 0.300 . A damping force acts on the egg. After it oscillates for 5.00 , the amplitude of the motion has decreased to 0.100.
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. What is the magnitude and direction of the acceleration of the block?
Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break? Please Help Guys
what is the magnitude of its velocity after the collision. A soccer player applies a force of 60.5 N to a soccer ball while kicking it. If the ball has a mass of 0.42kg, what is the acceleration of the soccer ball.
Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.
An automobile emits 20 lbs of CO2 per gallon of gasoline burned. how many billions of lbs of CO2 are emitted every year
The person in the drawing is standing on crutches. Assume that the force exerted on each crutch by the ground is directed along the crutch, determine the largest angle
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