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A uniform disk of mass m = 4 kg and radius r = 150 mm is supported by a belt ABCD that is bolted to the disk at B and C. If the belt suddenly breaks at a point located between A and B, determine,
(a) the acceleration of the center of the disk,
(b) the tension in portion CD of the belt
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
Use the small-angle formulas = (θ ×d)/206,265 to answer the following question: What is the actual diameter in light-years of the Cat's Eye Nebula if its angular diameter (arcseconds) = 20 and its distance (light-years) = 3,300?
when an ambulance is stationary the siren gives off a sound at a frequency of 500 hz. in answering the following
Ken and Kim are skating together on a rink at 3.00 m/s. Ken keeps asking Kim how much she weighs. Annoyed, Kim pushes away from Ken so that she speeds up to 4.00 m/s and he slows down to 2.40 m/s in the same direction. Friction, in the physics sense,..
For an electromagnetic wave propagating in sodium, Determine the penetration depth for 10^6, 10^15, and 2*10^15 Hz
At t = 0 she passes a parked motorcycle police officer, and the officer takes off after her with acceleration, a(t) = bt, where b is a constant and t is the time (i.e., the acceleration varies linearly with time). If the officer maintains this rat..
When a3.0µF capacitor is connected to a generator whose rms output is29V, the current in the circuit is observed to be0.30A. What is the frequency of the source
Two forces, (F1_vec) and (F2_vec), act at a point. (F1_vec) has a magnitude of 8.40N and is directed at an angle of 57.0 deg above the negative x axis in the second quadrant. What is the magnitude of the resultant force
80 cm3 of water takes 12 min to cool from 40?C to 15?C in a draft; it is contained in a copper calorimeter of mass 150 g, Calculate the specific heat of the suspension in SI units
A transformer is to be used to provide power for a computer disk drive that needs 6.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 420, and it delivers 500 mA (the secondary current) at an output v..
Four point charges have the same magnitude of 2.6 x10-12 C and are fixed to the corners of a squarethat is 6.0 cm on a side. Three of the charges are positive and oneis negative. Determine the magnitude of the net electric field that exists at the..
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
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