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A sphere of radius R= 3 m has a non-uniform charge density that varies with the distance from its center as given by ρ(r)=ar2 (r≤R) where a=2.5 nC·m-5. What is the magnitude of the electric field at a distance of 2.1 m from the center?
A point charge of +300 nC is present at the center. What is the radial component of the electric field at a point that is 0.60 m from the center?
Refer to Conceptual Example 8 as background material for this problem. The drawing shows a horizontal beam of light that is incident on a prism. The base of the prism is also horizontal. The prism (n = 1.20) is surrounded by a liquid whose index of r..
A roller coaster car rolls down a frictionless track, reaching a speed V0(Velocity original) at the bottom. by what factor must you increase the height of the track
calculate the wavelength of the first line of the Lyman series
The turbines in a hydroelectric plant are fed by water falling from a 50-m height, what is the mass flowrate of water required to power a 200-watt light bulb
A 1.8 kg solid disk pulley of radius 0.11 m rotates about an axis through its center. What is its moment of inertia
If the thermal power production is 30MW, and the electrical power production is 20MW, what is the energy efficiency for this cogeneration plant?
a piano wire with mass 3.00 g and length 80.0 cm is stretched with a tension of 25.0 n. a wave with frequency 120.0 hz
A 100.0 O and a 150.0 O resistor, both rated at 2.00 W, are connected in series across a variable potential difference.
A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 60 degrees from the normal. what is the ray's angle from the normal
Suppose the asteroid starts from rest at a great distance (effectively infinity), falling toward Earth. How much work would have to be done on the asteroid by friction
The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 35 N/m. What is the position of the block
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