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A speeder is pulling directuly away and increasing his distancefrom a police car that is moving at 25m/s with respect to theground. The radar gun in the police car emits an electromagneticwave with a frequency of 7.0 x 109 Hz. The wave relects from the speeder's carand returns to the police car, where its frequency is measured tobe 320 HZ less than the emitted frequency. Find the speeder's speedwith respect to the ground.
Relative to the ground, determine the angle of the velocity vector of the package just before impact.
An interstate highway has been built through a neighborhood in a city. In the afternoon, What is the average late-night sound level
question1a car comes to a bridge throughout a storm and finds the bridge washed out. the driver should get to the other
The primary coil of a transformer has 237 turns; secondary coil has 2100 turns. An alternating current is sent through the primary coil. The emf in the primary is 25 V. What is the emf amplitude in secondary.
Two small metallic spheres, each of mass m = 0.198 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.4 nC, and they come to equilibrium when each string is ..
A police investigator measures straight skid marks 29.0 m long in an accident investigation. Assuming a friction force and car mass the same as in the problem above, what was the minimum speed of the car when the brakes locked
Two large, flat conducting plates lie parallel to the x-y plane. They carry equal currents, one in the +x and the other in the -x direction, Find the magnetic field strength outside the plates.
A Hydrogen ion isaccelerated through a potential of 106 volts, and thenenters a magnetic field of strength .44 Tesla at an angle of24o, Determine the radiusof the ion's trajectory
A solid ball and a hollow ball, each with a mass of 2.29 kg and radius 0.115 m, start from rest and roll down a ramp of length 2.77 m at an incline of 32.7°
The left end of a long glass rod, 10.0 in diameter, has a convex hemispherical surface 5.00 in radius. Determine the position of the image of an object placed in air
A wheel of radius 1.5m rotates at a constant angular velocity. A point at the edge of the wheel experiences centripetal acceleration of 1.2m/s^2. What is the linear speed of that point
An object of mass = 2 kg is pulled by a constant force F = 5 N oriented at an angle of 30° with respect to the horizontal, for a horizontal distance of 2 m. What is the work done by force F? Do not consider friction.
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