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A charged isolated metal sphere of diameter 8.0 cm hasa potential of 7800 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surfaceof the sphere.
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
A 100g ball is thrown straight up in the air from a height of 1.5 m above the floor. what was the initial speed of the ball
One end of a long rod (n=1.5) is formed into a convex surface with a radius of curvature of 6cm. Find the image and object focal lengths, f' and f, and mark the locations of the foci in your to-scale sketch
A 50.0-kg student climbs a 5.00-m-long rope and atops at the top. How much work does she do
Show that the total charge contained in the charge distribution is Q. Show that the electric field in the region r = R is identical to that produced by a point charge Q at r = 0.
Assume that a CCD pixel is a uniformly made cube of silicon. The relation between pixel size and full well capacity is roughly true for real CCDs. Discuss what applications might require a CCD with large pixels and with small pixels.
Two lenses, one converging with a focal length of 20.0cm and one diverging with a focal length of -12.0cm, Find the final image from the second lens. Follow the sign conventions
A sled and its rider are moving at a speed of 4.0 m/s along a horizontal stretch of snow. The snow exerts a kinetic frictional force on the run ner of the sled, what is the displacement of the sled
Radio waves travel at a speed of 1.7 x 108 m/s through ice. A radio-wave pulse sent into the antarctic ice reflects off the earth at the bottom and returns to the surface in32.9 x 10-6 s.
At 20.0°C, a mainly silicon resistor has a resistance of 275 ?, and a tungsten resistor has a resistance of 752 ?. At what temperature will their resistances be equal
Though slow on land, the leatherback turtle holds record for the fastest water speed of any reptile: 9.78 m/s. It is also among the largest of reptiles. Assume the largest leatherback yet discovered were to swim at the top leatherback speed. If its k..
You decide to determine the depth of a tank of water using the sun's light. With the sun overhead, the tank's bottom is lit, Approximately how deep is the tanks
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