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A race car is traveling at a constant speed around a circular track. What happens to the centripetal acceleration of the car if its speed is halved?
a person with a mass of 50 kg is holding on to a rope of 15 kg which is attached to the ceiling. note that the person
After a golf ball is hit it takes off with an initial speed of 29.5 m/s and at an angle of 39.5° with respect to the horizontal. The golf field is flat and horizontal. Neglecting air resistance how far will the golf ball fly?
a block of mass 12.50 g on the end of spring undergoes simple harmonic motion with a frequency of 3.50 hz. if the
A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. What impulse was given to the ball by the floor
a strip of copper 140 microm thick and 4.20 mm wide is placed in a uniform magnetic field of magnitude b 0.84 t that
The receiver for a dish antenna is located in front of the concave surface of the dish. If the radius of curvature of the dish is R, find how far in front of dish should receiver be located
A lens for a 35-mm camera has a focal length given by f= 43mm. What is the magnification of the image on the film
Electric charge can accumulate on an airplane in flight. You may have observed needle-shaped metal extensions on the wing tips and tail of an airplane. What is the electric potential of each sphere
A block whose mass m is 680 kg is fastened to a spring whosespring constant k is 65 N/m. What is the maximum speed of the oscillating block
Two radio waves are used in the operation of a cellular phone. To receive a call, the phone detects the wave emitted at one frequency by the transmitter station or base unit.
A copper beaker of mass 0.20 kg contains 0.10 kg of water at 20.0 C. A block of silver of mass 100 g at 90.0 C is added to the beaker of water. What is the heat lost by the silver
q1. what are the average velocity and acceleration of the tip of an hour hand of a clock in the interval of noon to
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