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Give the reason why a dielectric material increases capacitance compared with what it would be with air between the plates of a capacitor. What is the independent reason that a dielectric material also allows a greater voltage to be applied to a capacitor? (The dielectric thus increases C and permits a greater V.).
Light of wavelength 233 nm shines on a metal surface. 4.02 eV is required to eject an electron. find the kinetic energy of the slowest ejected electrons
A light ray reflects from a mirror hanging vertically on a wall in your bathroom, and the ray strikes a particular point on the opposite wall (see figure below). The bottom end of the mirror is then tilted slightly away from the wall so that the mirr..
A light, rigid rod of length l = 1.00 m joins two particles, with masses m1 = 4.00 kg and m2 = 3.00 kg, at its ends. Determine the angular momentum of the system
A 165-N sign is supported by two ropes. One rope pulls up and to the right 35.5° above the horizontal with a tension T1, and the other rope pulls up.
The density of a 3.61 m long rod can be described by the linear density function lambda(x) = 103 g/m + 10.3x g/m^2. determine the center-of-mass coordinate
A 41 cm long solenoid 1.20 cm in diameter is to produce a field of 0.395 mT at its center. How much current should the solenoid carry
a student holds a tuning fork oscillating at 258 hz. he walks towards a wall at a constant speed of 1.42 ms.a what beat
What is the direction of propagation and the direction of linear polarization?
In the early 1800s in England, a debate arose in Parliament over the Corn Laws, restriction on imports of grain into the country. David Ricardo, the father of the comparative advantage concept, favored the repeal of these import restrictions.
An electric field is set up between two parallel plates, each of area 2.2 m2, by putting 1.0 C charge on one plate and the -1.0 C charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates ..
Consider two concentric thin wall steel tubes, the larger one closed at the bottom and the inner one open. What must be the relationship between the radii of the tubes
question a at room temperature what is the strength of the electric field in a 12-gauge copper wire diameter 2.05 mm
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