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An ultracentrifuge accelerates from rest to 100,000 rpm in 3.00 minute.
a) Obtain the angular acceleration?
b) Obtain the tangential acceleration of a point 9 centimeter from the axis of rotation?
c) Find the radial acceleration of this point at full rpm?
A bar of length .15 m, width .05 m and negligible height is spinning about its center of mass at 2 radians per second. what is their final angular velocity
Two sheets of polarizing material are placed with their transmission axes at right angle to one another. What is the intensity of the transmitted light when the middle sheet is removed
How much work must be done to accelerate a baton from rest to an angular speed of 6.96 rad/s about its center
a sinusoidal wave is traveling on a string with a speed of 40 cms. the displacement of the particles of the string at x
What is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of 3.68 C and -3.68 C, respectively. How fast would the second asteroid have to be moving in order to occupy the same circular orbit as before?
A liquid of density ρ is poured slowly on top to push piston down. How far will the piston push down
a heart defibrillator is charged to 350V. It is connected to a patient's chest and allowed to discharge through the heart. After 2secs, how much charge resides on the capacitor
a projectile is shot upward off a 475 m high cliff with a speed of 65m/s at an angle of 48 with respect to the horizontal. How high does the projectile rise
A car moving at 10 m/s crashes into a barrier and stops in 0.50s. There is a 20kg child in the car. Suppose that the child's velocity is changed by the same amount as the cars in the same time period.
An electron of mass 9.1x10^-31kg is moving in the x-y plane; its speed is 2.0x10^5m/s and its direction of motion makes an angle of 25 degrees by the x-axis. What are the components of the momentum of the electron?
one gram of water changes from liquid to solid at a constantpressure 1.00 atm and a constant temperature of 0degrees. Find the work done on the water
A ball having amass of 150 g strikes a wall with aspeed of 4.8 m/s and rebounds withonly 50% of its initial kinetic energy. What is the magnitude of the impulse on the wall from the ball
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