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A barbell with two equal masses 1.0 kg on either end rotates about an axis perpendicular to the bar with an angular velocity of 1.13 rad/s. If one of the masses is 0.43 m away from the axis of rotation and the entire system has a rotational kinetic energy of 25.1 J, how far away is the other mass from that axis (in meters)?
Note: Treat the weights on the barbell as point masses, so that you can use I = mr2
An air-track glider attached to a spring oscillates between the 11.12 cm mark and the 54.38 cm mark on the track. What is the maximum speed of the glider in cm/s
A 54kg ice skater moving at 6.4m/s glides to a stop. Assumingthe ice is at 0deg C and that 50% of the heat generated by frictionis absorbed by the ice, how much ice melts
An AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Find the average power delivered to the circuit
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.2 m/s2 for20 seconds. It then proceeds at constant speed for 1100 m beforeslowing down at 2.2 m/s2 until it stops at the station.
A 85-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 cm in diameter
An experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. What is the torque supplied by friction
Thunderclouds typically develop voltage differences of about 1×108 V. Given that an electric field of 3×106 V/m is needed to produce an electrical spark within a volume of air, estimate the length of a thundercloud lightning bolt.
a string of linear density 1.60gm is stretched between clamps 48.0cm apart. the string does not stretch appreciably as
The normal force at the top of the circle is 122 Newtons. What is the normal force on the motorcycle on the side of the circle.
a cyclotron designed to accelerate protons has an outer radius of 0.290 m. the protons are emitted nearly at rest from
A coin is located 20.0 cm to the left of a converging lens (f = 13.0 cm). A second, identical lens is placed to the right of the first lens, Find the separation between the lenses.
The radius of Venus's orbit is 0.72 times that of Earth's orbit. How much stronger is the Sun's gravitational field at Venus than at the earth.
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