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Q. The plates of a parallel-plate capacitor are 2.50 {rm mm} apart, and each carries a charge of magnitude 85.0 {rm nC}. The plates are in vacuum. The electric field between the plates has a magnitude of 5.00×106 V/m. What is the potential difference between the plates?
Q. Two particles are fixed to an x axis: particle 1 of charge q1 = +2.1 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero?
Differentiate between the following three types of plain carbon steels.
Determine the location of the center of mass of the molecule as measured from the hydrogen atom (Chlorine is 35 times more massive than hydrogen.).
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 22 m. He then makes another 90.0° turn and moves 14 m.
The position of an air-track cart that is oscillating on a spring is given by the equation x = 12.4 cos[(6.35 s-1)t] . At what value of t after t= 0.00s in the cart first located at x = 8.47 cm ?
A thin 12 cm long solenoid has a total of 490 turns of wire and carries a current of 1.9 A. find the magnitude of the field inside near the center.
If the coefficient of friction between road and tires on a rainy day is 0.120, what is the minimum distance in which the car will stop.
The 60kg cradle A is carrying the 12 kg pipe B at the speed of 8 m/s when it hits the rigid wall. suppose all the impacts are plastic, determine the speed of the pipe immediately after the impacts. Neglect friction.
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
What velocity would a proton need to circle Earth 1400 km above the magnetic equator, where Earth's magnetic field is directed horizontally north and has a magnitude of 4 x10-8 T .
An isolated copper sphere of radius 4.85cm, at first uncharged, is illuminated by ultraviolet light of wavelength 244nm. The work function for copper is 4.70 eV. What charge does the photoelectric effect induce on sphere.
A capacitor is connected across the terminals of an ac generator that has a frequency of 370 Hz and supplies a voltage of 15 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.27 A. D..
A 251 kg wooden raft floats on a lake. When a 70kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
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