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A person who is cycling with initial velocity of 12 m/s brakes hard locking wheels they slide to a stop their mass is 70kg and their bike is 5kg. If the coefficient of kinetic friction between rubber and concrete is .7 how far do they travel before they stop?
An unstable particle is at rest and suddenly breaks up into two fragments. No external forces act on the particle or its fragments. What is the velocity of the more massive fragment
Calculate the angular momentum of the Earth about its own axis, due to its daily rotation. Assume that the Earth is a uniform sphere
The coil of a generator has a radius of 0.20 m. When this coil is unwound, the wire from which it is made has a length of 7.50 m. What is the peak emf of this generator
A long solenoid that has 1,060 turns uniformly distributed over a length of 0.395 m produces a magnetic field of magnitude 1.00 10-4 T at its center
You are driving just behind a second car and both of you are moving at a speed 58mi/h. What is the minimum safe distance
A 40.0 kg girl and a 8.4 kg sled are on on ice (frection coefficient 0.01) of a frozen lake, draw free body diagrama for the girl and the sled
After a hard rain, you walk out into the parking lot and notice an oil sheen on top of a puddle of water. When viewed from directly above, What is the minimum thickness of the oil
Imagine a frictionless pulley (a solid cylinder) of unknown mass M and radius r = 0.200 m which is used to draw water from a well. A bucket of mass m = 1.50 kg is attached to a massless cord wrapped around pulley. The bucket starts from rest at th..
The proton is replaced with He2+ ion now at a distance of 3 cm from the bead. What is the magnitude of the force experienced by the helium ion
When the displacement of a mass on a spring is 0.445 of the amplitude of its oscillation, what fraction of the mass's energy is kinetic energy
A galvanometer has an internal resistance of 30?and deflects full scale for a 60??A current, What is the magnitude of this resistor
While riding her bicycle on a 140 meter track, a rider took 18 seconds on her first lap and 17 seconds on her second
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