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A student’s car stalls right in front of a speed bump while she is on her way to physics class. To pull it over the bump, she ties a cable to her bumper and to a nearby tree, and pulls with a force, F, of 77.0 lbs (343 N) at the midpoint in a perpendicular direction. If is 11.1 degree, what is the size of the force pulling the car in lbs
A square, 0.141 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. What is the magnitude of the maximum torque that such a force could produce
Two hockey players strike a puck of mass 0.169 kg with their sticks simultaneously, exerting forces of 1.25 103 N, directed west, and 9.80 102 N, Find the instantaneous acceleration of the puck
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.12 106 m/s. Find the centripetal acceleration of the electron
A coin placed on a turntable rotating at 36.1 rev/min will stay there if its center is placed no further than 7.1cm from the axis of rotation. find the maximun distance the center of the coin can be placed
a car at the indianapolis-500 accelerates uniformly from the pit area going from rest to 295 kmh in a semicircular arc
in a long solenoid the density of the wire is 180 turnscm. if the current in the wire is 0.680a what is the strength of
A circular disk, centered at the origin of a coordinate system, is rotating at a constant angular velocity ?0. In Cartesian coordinates, what is the velocity vector of the point P located at the cartesian coordinate (1,1).
A certain car battery with a 14.0 V emf has an initial charge of 195 A•h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long in hours can it deliver energy at the rate of 184 W.
A 86 kg student sits on a chair which is solely supported by a solid 0.64 meter-long steel rod 0.84 cm in diameter. To the nearest micron (millionth of a meter), what is the change in length of the rod produced by the student's weight?
carefully examine the temperature-dependent speed of sound equation 331 0.6t where t is temp in celsius. can this
Two identical small insulating balls are suspended by separate 0.22-m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.10 10-4 kg.
Batman (mass = 95.9 kg) jumps straight down from a bridge into a boat (mass = 683 kg) in which a criminal is fleeing. The velocity of the boat is initially +8.67 m/s. What is the velocity of the boat after Batman lands in it?
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