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A speeder is pulling directly away and increasing his distance from a police car that is moving at 29 meter per second with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 9.00 x 109 Hertz. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 326 Hertz less than the emitted frequency. Obtain the speeder speed with respect to the ground.
A small circular loop of area 2.00cm^2 is placed in the plane of, and concentric with, a large circular loop of radius 1.00m. What emf is induced in the smaller loop at t=0.500s
An electron in a vacuum is first accelerated by a voltage of 21100 V and then enters a region in which there is a uniform magnetic field of 0.644 T at right angles to the direction of the electron’s motion.
The siren in an ambulance has a frequency (according to you) of 1095 Hz as it moves toward you at speed v. What is the final speed v of the siren
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^7 m/s, What is the momentum of the base ball
A 25.0 kg child on a 2.00 m long swing is released from rest when the ropes of the swing make an angle of 60.0 degrees with the vertical. determine the childs speed at the lowest position
A light bulb is placed 18.3 cm in front of a concave mirror. When the concave mirror is replaced by a plane mirror in the same location, Calculate the focal length of the concave mirror
A golf ball is dropped from rest from a height of 8.30 m. It hits the pavement, then bounces back up, rising just 5.90 m before falling back down again, calculate the total amount of time that the ball is in the air
A 31.0-kg child on a 1.00-m-long swing is released from rest when the ropes of the swing make an angle of 30.0° with the vertical. Neglecting friction, find the child's speed at the lowest position.
A common flea that has a mass of 0.008 g can jump vertically as high as 19 cm. Estimate the wavelength for the flea immediately after takeoff
An object is located 40 centimeter in front of a lens of focal length 40 centimeter. Determine the lateral magnification of this system
a ring of radius r carries positive linear charge density ?cm. what is the electric field and what is the potential vv
During the takeoff of an airplane, a passenger removes his tie and lets it hang loosely from his fingers. What is the speed of the plane at takeoff
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