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A parallel-plate vacuum capacitor has 8.56J of energy stored in it. The separation between the plates is 3.80mm. If the separation is decreased to 1.45mm,
Part A:
what is the energy now stored if the capacitor was disconnected from the potential source before the separation of the plates was changed?
Part B:
What is the energy now stored if the capacitor remained connected to the potential source while the separation of the plates was changed?
In a series R-L-C circuit, L=.165H C=85.0uF and the voltage amplitude of the source is 200V. What is the resonace angular frequency of the circuit
During a certain period of time, the angular position of a swinging door is described by ? = 5.03 + 9.8t + 1.90t2, Determine the angular position, angular speed, and angular acceleration
The density of a 3.0-m long rod can be described by the linear density function ?(x) = 135 g/m + 13.6x g/m2. find the center-of-mass of the rod
What is the work done by the electric field on a charge q as it moves through a potential difference of ?V? (Use any variable or symbol stated above as necessary.)
What approximations or simplifying assumptions must you make in the calculations? (Note: Some of these choices are false because they are wrong physics!)
The coefficient of static friction between the 3000 lb car's tires and the road is 0.5. Determine the steepest grade the car can drive up at constant speed if car has (a) rear=wheel drive; (b) front-wheel drive; (c) four wheel drive.
The pendulum in a grandfather clock is made of brass and keeps perfect time at 17.8°C. How much time is gained or lost in a year if the clock is kept at 23.5°C
A molecule is represented by a charge -2q at the origin and charges +q at b1 and b2, where | b1 | = | b2 | = b, Find dipole moment of the molecule
A series RLC circuit has a resonance frequency of 102.048 Hz. When it is operating at a frequency of w>wo, XL = 15.6 ohms, and Xc = 11.7 ohms. Calculate the inductance for the circuit in units of mH
Suppose two vectors each have length 3.0 units. if the two vectors are perpendicular to each other, what is the resultant vector length
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. What is the average speed of the bicyclist for the trip
Wavelengths of light from a remote galaxy are found to be 1.5 % longer than the corresponding wavelengths measured here on earth. What ids the speed of the galaxy relative to earth
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