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Fields at the surfaces **
Consider the electric field at a point on the surface of (a) a sphere with radius R, (b) a cylinder with radius R whose length is infinite, and (c) a slab with thickness 2R whose other two dimensions are infinite. All of the objects have the same volume charge density ρ. Compare the fields in the three cases, and explain physically why the sizes take the order they do.
An electric point of 6 mill- coulomb is placed in the center of a metallic spherical shell of inner diameter 15 cm and thickness 18 cm. Calculate the electric field at the following distances from the point charge. 10cm, 16cm, 25 cm. The charge is..
A nucleus is moving in the direction at 4.8x10^5 m/s when it decays into an alpha particle (4He) and a 234Th nucleus. what is the speed of the thorium nucleus
A 40 centimeter long organ pipe is filled with air at 0oC and is open at both ends. Find the beat frequency between fundamental frequencies
What aspects of this new planet would you look for to ensure the survivability of our species? Some of the specifics you may want to discuss are: Size and age of the planet Atmosphere of the planet The distance of the planet to its Sun The type of Su..
An object thrown straight up falls back and is caught at the sameplace it is launched from. Its time of flight is T;its maximum height is H. Neglect air resistance. What is its average velocity for the second half of the trip?
question a 4kg cart is initially moving at 3ms on a frictionless track. it then hits an incline and stops 2m later. a
If the electric field at a point in space has a manitude of300 volts/meter, about how far apart are the equipopoetnial surfaces that differ by 10 volts?
a young lady runs for 20 minutes and gives off 128 kcal of heat by evaporation of water from her skin. how much water
A black body has a mass of 4.40 kg, specific heat of 2000 J/(kg · C°), surface area of0.198 m2, emissivity 1.00, and initial temperature 95° C. The surroundings are at a temperature of 20.8° C.
A 10kg hammer strikes a nail at a velocity of 7.7m/s and comes to rest in a time interval of 9.0ms. What is the impulse given to the nail
In some places, insect "zappers" with their blue lights, are afamiliar sight on a summer's night. These devices use a highvoltage to electrocute insects. One such device uses an ac voltageof 4320V, which is obtained froma standard 120.0V outlet by..
A thin spherical copper shell of radius 9.5 cm carries an excess charge of -4.2 nC. How many excess electrons are on the outer surface of the shell
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