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A wooden rod of negligible mass and length 84.0 cm is pivoted about a horizontal axis through its center. A white rat with mass 0.470 kg clings to one end of the stick, and a mouse with mass 0.180 kg clings to the other end. The system is released from rest with the rod horizontal.
a) If the animals can manage to hold on, what are their speeds as the rod swings through a vertical position?
Take free fall acceleration to be 9.80 M/S
An electron with kinetic energy 1.52 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 22.0 cm, Find the frequency of circling
A puck (mass m1 = 1.30 kg) slides on a frictionless table as shown in the figure below. The puck is tied to a string that runs through a hole in the table and is attached to a mass m2 = 3.9 kg. What is the change in the kinetic energy of the puck
The plane of a 5.10cm by 9.00cm rectangular loop of wire is parallel to a 0.220T magnetic field, What is the magnetic moment of the loop
Two ice skaters, Daniel (mass 63.1 kg ) and Rebecca (mass 45.9 kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the direction of Daniel's velocity after the collision
A spring lies on a horizontal table, and the left end of the spring is attached to a wall. How far can the spring be stretched from its unstrained position
A spring has a force constant of 100 N/m and an unstretched length of .07 m. One end is attached to a post that is free to rotate in the center of a smooth table.
A vector is located in the x-y plane. The x component is 4.00 m and the y component is 3.00 m. Find the angle that this vector makes with the positive y-axis
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
A compact disk (CD) in a computer rotates from rest up to an angular speed of 31.4 rad/sec in 0.892 sec. What is the angular acceleration of the disc
question the speed of 3oz tennis ball is changed from 60 fts in one direction to 80fts in the opposite one as a racket
Consider a beam as shown in the figure that is 2 m long and supported by a rope. It is pressed against the wall. what is the tension in the rope
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