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Jennifer, who has a mass of 50.0 kg, is riding at 35.0 m/s in her red sports car when she must suddenly slamon the brakes to avoid hitting a deer crossing the road. She strikes the air bag that brings her body to a stop in 0.500 s. What average force does the seat belt exert on her? If Jennifer had not been wearing her seat belt and not had an air bag, then the windshield would have stopped her head in 0.002 s. What average force would the windshield have exerted on her?
Light from a laser falling on two slits produces the third-order fringe at an angle of 8.8 degrees. what is the distance between the two slits
An anemometer for measuring wind speed consists of four metal cups, each of mass m = 140 g, mounted on the ends of four essentially massless rods of length R= 0.37 m. The rods are at right angles to each other and the structure rigidly rotates..
A plane is headed due west with an air speed of 224 m/s. Find the velocity of the plane relative to the earth
A ring of charge is centered at the origin in the vertical direction, Find the total electric field, E, of the ring at the point P = (2.25 m, 0.00 m)
A sticky hockey puck slides along a frictionless horizontal ice surface at 75m/s in the + x-direction. what is the angle of their final velocity vector below the +x direction
A 74 kg person is parachuting and experiencing a downward acceleration of 2.9 m/s2. The mass of the parachute is 5.8 kg. find the upward force on the open parachute from the air
A ball is shot from the ground into the air. At a height of 10.60 m, the velocity is observed to be v = (8.60 m/s) i + (6.50 m/s) j
q1. a heavy rope used for as a mooring line for a cruise ship sags a shown. if the mass of the rope is 96 kg what are
A projectile proton with a speed of v collides elastically with a target proton initially at rest. what is the speed of the projectile proton
q1. a 3.10-m-long 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
A thin, horizontal, 10-cm-diameter copper plate is charged to 3.5nC. If the electrons are uniformly distributed on the surface, what are the strengths and direction of the electric field
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