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A 65-kg bicyclist rides his 8.8-kg bicycle with a speed of 14 m/s.
(a) How much work must be done by the brakes to bring the bike and rider to a stop?
(b) How far does the bicycle travel if it takes 4.0 s to come to rest?
(c) What is the magnitude of the braking force?
A 30 nC charged particle and a 50 nC charged particle are near each other. what is the magnitude of the electric field at its original position
A train moving with constant velocity travels 180 m north in 14 s and an undetermined distance to the west. How far west has the train traveled in this time
A 2.0 kg, 20-cm-diameter turntable rotates at 100 rpm on frictionless bearings. Two 500 g blocks fall from above; hit the turntable simultaneously at opposite ends of a diagonal, and stick. What is the turntable's angular velocity, in rpm, now after ..
A negative charge -0.550 µC exerts an upward 0.700 N force on an unknown charge 0.280 m directly below it. What is the unknown charge (magnitude and sign)? What are the magnitude and direction of the force that the unknown charge exerts on the -0.550..
A body is in motion at 1.0 m/s less than the speed of light. What is the Lorentz factor of this body
A positive lens of focal length 40 cm is placed 20 cm behind a negative lens of focal length -80 cm. The final image distance relative to the positive lens is:
A spherical object has an outside diameter of 52.0 cm. Its outer shell is composed of aluminum and is 2.40 cm thick. What is the object's average density
What is the gauge pressure in the lower pipe? The acceleration of gravity is 9.81 m /32. Answer in units of Pa.
A capacitor with parallel circular plates of radius R = 1.65 cm is discharging via a current of 16.5 A. How much displacement current is encircled by the loop
Assuming that the coefficient of restitution between the rods is 0.5, determine the velocity of rod CD immediately after the impact.
A convex mirror has a focal length of -24cm. discover the magnification produced by the mirror when the object distance is (a) 5 cm and (b) 24cm.
A single conservative force acts on a 5.00 kg particle within a system due to its interaction with the rest of the system. Calculate the work done by this force on the particle
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