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When a certain air-filled parallel-plate capacitor is connected across a battery, it acquires a charge (on each plate) of200 µC. While the battery connection is maintained, a dielectric slab is inserted into and fills the region between the plates. This results in the accumulation of an additional charge of 350 µC on each plate. What is the dielectricconstant of the dielectric slab?
The heating element of a clothes dryer has a resistance of12.7 Ohms. A voltage of 240 V is connected across the heatingelement. What is the current in the heating element?
A current travels northwards along a power line, in the downwards magnetic field of the earth. In which direction will the magnetic force on the wire be directed
The supersonic low altitude missile (vought SLAM) had an atomic engine operating at 1500 degrees celsius. What is the maximum efficiency possible
An oscillating LC circuit has a current amplitude of 7.50 mA, a potential amplitude of 250 mV, and the capacitance of 220 nF. What are (a) the period of oscillation.
An electron microscope uses electrons that are accelerated tospeeds of 30000m/s.The electrone than sent perpendicularly throughanother electric field produced between two plastec 1.00cm apartwith potential difference of 12,000volts
A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. what is the velocity of the other object after the explosion
A electron enters a magnetic field of 0.3 T at an angle of 45 degrees and with a speed of 5 E5 m/s. Find the force on the electron . Describe the part of the electron while in the magnetic field.
A solenoid used to produce magnetic fields for research purposes is 1.9m long, with an inner radius of 27cm and 1100 turns of wire. When running, how large a current does it carry
A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion
You and your friend throw balloons ?lled with water from the roof of a several story apartment house. You simply drop a balloon from rest. How high is the apartment house
A set of 20 stairs, each of 20-cm height, is ascended by a 700 N man in a period of 1.25 s. Compute the mechanical work, power, and change in potential energy all through the ascent. I have 2800J. Where do I go from here.
By what distance has the proton been deflected sideways when it reaches the far edge of the capacitor. Assume the field is uniform inside the capacitor and zero outside the capacitor.
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