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A metal sphere of radius 13 cm has a net charge of 2.8 x10–8 C. (a) What is the electricfield at the sphere's surface? (b) If V =0 at infinity, what is the electric potential (in V) at thesphere's surface? (c) At what distance (in cm)from the sphere's surface has the electric potential decreased by690 V?
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 49m diameter loop the loop
Compute the amplitude and phase at the observation screen
A 52g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg
A bullet is fired through a board 9.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A bicycle slows down uniformly from v0 = 8.40 m/s to rest over a distance of 115m. Each wheel and tire has an overall diameter of 68.0 cm. determine the angular acceleration of the wheel
The output voltage of an ideal transformer connected to 240 V a.c mains is 24 volt. Now We have to calculate current in primary coil
One of the 61.0cm -long strings of an ordinary guitar is tuned to produce the note B3 (frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
A pair of speakers separated by 0.820 m are driven by the same oscillator at a frequency of 652 Hz. An observer originally positioned at one of the speakers begins to walk along a line vertical to the line joining the speakers.
Three positive particles of charges 1 ?C, 2 ?C, 3 ?C, and 4 ?C, are located at the corners of a square of side 1 cm. Calculate the potential in the center of the square
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won\'t do the job, since all you can tell is that each needle is less than a millimeter thick. What is the diameter of the needle
A satellite is circling a small planet at a speed of 3.60 rev/day. If the satellite's orbit has a diameter of 30,000 km, how fast is the satellite moving
A cryogenic storage container holds liquid helium, which boils at 4.2 K. Suppose a student painted the outer shell of the container black, Determine the rate of heat loss due to radiation
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