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You are at a furniture store and notice that a Granfather clock has its time regulated by a physical pendulum that consists of a rod with a moveable weight on it. When the weight is moved downward, the pendulum slows down; when it is moved upward, the pendulum swings faster. If the rod has a mass of 1.23 kg and a length of 1.25 m and the weight has a mass of 1.14 kg where should the mass be placed to give the pendulum a period of 2.00 seconds? Measure the distance in meters from the top of the pendulum.
A rod is 0.5100 m long at 25C. At 225C the rod is loaded with a stress of 2 76 MPa and its length is found to be 0.5358 m, calculate the coefficient of thermal expansion for this material
A person gives a box a shove so that it slides up a ramp, then reverses its motion and slides down. what is the direction of the force of friction
The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. find the electrostatic potential energy of the pair of protons
A fiber optic cable has n=1.4 in the center and n=1.2 for cladding. If a light pulse is incident along the cable's axis, what is the maximum angle the cable can be bent
A tee consisting of two thin rods each having a mass of M and with lengths L1 and L2, Find the rotational velocity of the tee-clay ball combination just after the collision
A 40 kg girl, standing at rest on the ice, gives a 60 kg boy, who is also standing at rest on the ice, a shove, What is the girl's speed
The pendulum pictured above has a length of 15.0 cm when it is displaced to the right of the peg, Determine the period for this pendulum close to the surface of the Earth
some sunglasses have half-silvered mirrors on them on the front. why can the wearer see through them but no one else
as two trains move along a track their conductors suddenly notice that they are headed toward each other. the figure
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 117 bpm, How fast are you moving with respect to the Moon
The Hall voltage across a conductor in a 44mTmagnetic field is 1.9?V. What is the strength of the second field
In a typical television or in an older computer picture tube (CRT),the electrons that strike the screen to form an image areaccelerated between two charged plates that have a potentialdifference of 2.5×104 V. The plates are separated by adistance ..
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