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1. What is the rotational analog to Newton's second law (F=ma)?
2. A point mass is rotating about a rotation axis. You increase its distance from that axis by a factor of two. By what factor does its moment of inertia about the axis increase?
3. A solid disk is rotating about an axis with uniform angular velocity. Another disk (with the same moment of inertia about the rotating axis)is dropped on top of it, so that afterwards the two disks are rotating together at a new uniform angular velocity. How is the new angular velocity related to the old one?
A horizontal 605 N merry-go-round of radius 1.31 m is started from rest by a constant horizontal force of 77.9 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go- round
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, while sleeping during the day, What is the proper orientation of the coil
q1. consider a too-small space station that consists of a 3.1 m radius rotating sphere. a man standing inside is 2.0 m
The starter motor of a car engine draws a current of 127 A from the battery. How much charge passes trough the starter motor
What is the combined contact force on the log by ropes 1 and 2? In this case, give your direction in terms of an angle in degrees measured counterclockwise (CCW) from the Easterly direction. The angle may be anything between 0 and 180 degrees.
Find the electric field at the position of the electron. What is the potential difference in volts between the plates.
A waterpipe of radius 0.02 m delivers water at a flow rate of 0.01m^3/ s^1 at 20 degrees C. What is the average velocity of the water
A ball moving at 5ms collides head on elastically with a ball at rest. what are the velocities of the two balls after the collision
A fancy sports car moves past an observer on a corner at a speed of 0.5c. what time interval will be shown on the driver's watch
a zero-resistance rod sliding to the right on two zero-resistance rails is separated by the distance L = 0.51 m. The rails are connected by a 11.7-? resistor, What is the rate of energy dissipation in the resistor
A rescue plane flies horizontally at a constant speed searching for a disabled boat, If it takes the sound 2.10 s to reach the plane, determine the speed of the plane and What is its altitude
A bat strikes a 0.145- baseball. Just before impact, the ball is traveling horizontally to the right at a speed of 40.0 , Find the vertical component of the average force on the ball
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