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A sports car tire is 64 centimeter in diameter. The car is traveling at a speed of 30 m/s.
(a) Determine the tire's rotation frequency? in rpm
rpm
(b) Find the speed of a point at the top edge of the tire?
m/s
(c) Find the speed of a point at the bottom edge of the tire?
m/ s
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Kinetic friction is a constant-value force, while static friction changed in response to other forces, up to some maximum, What if static friction behaved more like kinetic friction, with same constant value
The motion detector used in a physics lab sends and receives 49.55 kHz ultrasonic pulses. find the wavelength of the waves emitted by the motion detector
In one day, a 81-kg mountain climber ascends from the 1410-m level on a vertical cliff to the top at 2208 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1215 m.
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