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In the figure, two conducting balls of identical mass m = 15 g and identical charge q hang from non conducting threads of length L = 120 cm. If x = 6.1 cm, what is q? Since x is much smaller than L approximate sin (?) by?
The maximum induced emf in a generator rotating at 249 rpm is 44 V. How fast must the rotor of the generator rotate
How much higher would the ball have gone in a vacuum. The time constant of an RC circuit is 4.8 s. How much time t is needed for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge.
A handball is thrown straight upward and is in the air for a total time of 8 s. Draw a diagram, label time and velocity every second. Compute the maximum height of the ball in meters
A tuning fork labelled 392 Hz has the tip of each of its two prongs vibrating by amplitude of 0.600mm. What is the maximum speed of the tip of a prong?
small particles might be blown out of solar systems by the radiation pressure of sunlight. assume that the particles
A uniform 3.15-kg rope 25.6 m long lies on the ground at the top of a vertical cliff. What was the change in potential energy of the rope during this maneuver
Bob is standing 1.00m above the ground. he is holding an RPG at an angle of 30 degrees. how far from Bob will the missle land
the current-density magnitude in a certain circular wire is j 2.60 times 1010 am4r2 where r is the radial distance out
find the net force magnitude and direction acting on a 0.5c charge due to a 3c charge 1.2 meters away at an angle of 30
The primary coil of a transformer has N1 = 4.50 102 turns, and its secondary coil has N2 = 1.35 103 turns. what rms voltage is developed across the secondary coil
a baseball player hits a triple and ends up on third base. a baseball diamond is a square each side of length 29 m with
A 3 kg block moving at 4 m/s makes a head-on elastic collision with a stationary block of mass 2 kg. Use coservation of momentum and the fact that the relative speed of recession equals the relative speed of approach to find the velocity of each bloc..
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