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A parallel-plate capacitor has fixed charges q and -q. The seperation of the plates is then doubled. by what factor does the energy stored in the electric field change? How much work must be done in doubling the plate seperation from d to 2d? The area of each plate is A.
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
q1. for the beam given in the figure below assume that the material is astm-a514 steel with elastic modulus and e
100.0 W tungsten filament bulb generates 95.0 W of heat, determine difference in temp. between inner and outer surface of glass
Find out the induced emf in the loop at an instant
A 500-g block is released from rest and slides down a frictionless track that begins 2.00 m above the horizontal. At the bottom of the track, What is the velocity of the mass just before it strikes the spring
On a cool morning, when the temperature is 15deg Celsius, you measure the pressure in your car tires to be 30 psi. After driving 20 mi on the freeway, temperature of your tires is 45 deg Celsius. What pressure will your tire gauge now show.
A bat emits a sound whose frequency is 91.20 kHz. The speed of sound in air at 20 degrees Celcius is 343m/s. However the air temperature is 38.8 degrees Celcius, so the speed of sound is not 343m/s. imagine that air behaves like an ideal gas, and ..
What is the magnitude of the induced electric field 0.2070cm from the axis of the solenoid? Give your reply in Volts/meter in scientific notation to three significant digits.
It is desired to slip an aluminum ring over a steel bar. At 10 the inside diameter of the ring is 4.550 and the diameter of the rod is 4.580. Find the temperature at which the ring can be removed
A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.30 rev/s. What is the tangential acceleration of a point on the disk 3.60 cm from the axis
A parallel-plate capacitor is constructed with circular plates of radius 6.5×10?2m . The plates are separated by 0.27mm, Find the value of the dielectric constant, k
A cord passes over a weightless and frictionless pulley. Masses of 200 and 300 grams are attached to the ends of the cord. Find the distance the masses will move during the fifth second after they had started.
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