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A curve in a highway has radius of curvature 110 m and is banked at 3.4°. On a day when the road is icy, what is the safest speed to go around the curve?
______m/s
A constant current of I = 15 A exists in a solenoid whose inductance is L = 42.2 H. The current is then reduced to zero in a certain amount of time. If the current goes from 15 to 0 A in a time of 75 ms, what is the emf induced in the solenoid
A student sitting on a frictionless rotating stool has rotational inertia 0.90kg?m2 about a vertical axis through her center of mass when her arms are tight to her chest. Ignoring her arm mass, what's her new rotational velocity
A gymnast with mass m1 = 41 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at least the gymnast stands at the left end of..
A spinning object has a moment of inertia of 1.6 kg*m2. It is rotating at a rate of 1rad/s. If the moment of inertia increases to 3 kg*m2, what is the new rotational velocity
A wire of radius a is surrounded by a cylindrical conductor of inner radius a and outer radius 2a,. find the radius at which the magnetic field is zero
the barrel of a ri?e has a length of 0.942 m. a bullet leaves the muzzle of a ri?e with a speed of 580 ms. what is the
q1. a 3.0 kg basketball travelling at 15ms collides with the 2.0- kg baseball which is initially at rest in the elastic
The amount of charge that passes through a filament of a certain lightbulb in 1.76 s is 1.63 C. Find the current in the bulb
A Carnot cycle takes 92 cycles to lift a 10 kg mass a height of 13m. What is the temperature of the hot reservoir
A horse is capable of moving at four different speeds: walk (1.9 m/s), trot (5.0 m/s), canter (7.0 m/s), and gallop (12 m/s). An is learning how to ride a horse, what was her average velocity over the trip
A potter's wheel having a radius 0.450m and a moment of inertia 15 kg•m2 is rotating freely at 45 rev/min. The potter can stop the wheel in 7.50 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N.
If you lift the front wheel of a poorly maintained bicycle off the ground, If the moment of inertia of the wheel about its axle is 0.30 , what is the magnitude of the frictional torque
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