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In San Francisco, a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, which can rotate about a vertical axis through its center. Then, two people push perpendicularly on the car, one at each end, as shown in the drawing. The turntable is rotated one-half of a revolution to turn the car around. If the length of the car is 8.60 m and each person pushes with a 190 N force, what is the magnitude of the net torque applied to the car? (in N*m)
A barrel contains a 0.130 {\rm m} layer of oil of density620 {\rm{{\rm kg}/{\rm m}}}^{\rm{3}}floating on water that is 0.290 {\rm m} deep. What is the gauge pressure at the bottom of the barrel
From the origin we wish to go to the point (3000,4000,0). A force of 10N will be applied until a velocity of 5 meters per second is achieved, then at the appropriate time, a force of 2N will be applied to bring the vehicle to a stop at the desired..
When chasing a hare along a flat stretch of ground, agreyhound leaps into the air at a speed of 10.9 m/s, at an angle of 25° above the horizontal. What is the range of his leap
A 10 m long wire carrying a current of 22 A makes an angle of 37 degrees with the Earth's magnetic field of 0.51 mT. What is the magnetic force of the wire
q1. a caterpillar climbs up a one-meter wall. for every 3 cm it climbs up it slides down 1 cm. it takes 10 minutes for
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
The weight of passengers on a roller coaster increases by 57 as the car goes through a dip with a 39 radius of curvature. What is the car's speed at the bottom of the dip
two point charges lie on the x axis. a charge of 9.5 microc is at the origin and a charge of -6.5 microc is at x 10.0
A uniform magnetic field is aligned with the axis of a solenoid having a radius of 0.25m. What is the induced emf in the coil
A 2.0 kg mass is projected from the edge of the top of a 20mtall building with a velocity of 24m/s at some unknown angle abovethe horizontal. find the kinetic energy of the mass just before it strikes the ground
An open organ pipe 0.750 {\rm m} long has its first overtone at a frequency of 441 {\rm Hz}. What is the temperature of the air in the pipe
A ball of mass 0.45 kg is traveling with a velocity of 1.2 m/s north, 2.4 m/s east and 0.6 m/s up. What is the angular momentum of the ball with respect to the point at which the rope is attached to the post
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