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A performer, seated on a trapeze, is swinging back and forth with aperiod of 9.50 s. If she stands up, thusraising the center of mass of the system trapeze +performer by 43.0 cm, what will be the new period of the trapeze? Treat trapeze +performer as a simple pendulum.
s
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of human hearing) for a period of 9.00 hours
A 450g rubber ball is dropped from 2.0m above the floor. After the bounce, the ball only rises to a height of 1.5m above the floor. find the amount of heat generated when the ball hits the floor
a 3.0-kg object hangs at one end of a rope that is attached to a support on a railroad car. when the car accelerates to
A positively charged particle of mass 7.2x10^-8 kg istraveling due east with a speed of 85 m/s and enters a 0.31-Tuniform magnetic field. Determine the magnitude of its charge
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive plate
Determine the kinetic and potential energies when thedisplacement is one half the amplitude. For what value of the displacement does the kineticenergy equal the potential energy?
A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 2.09 m/s2. What is the acceleration of the bolt relative to the train car
We are going to treat this approximatly as an elastic collision. What are these final velocities in the reference frame of the ground
Two bugs are buzzing with the same frequency of 186Hz. One of the bugs is flying away from a stationary observer at 9.0m/s, What is the beat frequency that the observer hears
a particle of mass m1 experienced a perfectly elastic collision with a stationary particle of mass m2. what fraction of
an object is placed 12.0 cm in front of the cornea. the cornea is thin ans has approximately parallel sides so that the
suppose one of the resistor in the bridge circuit was heated by baking it in an oven. how would this effect the current
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