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A 9 Volt battery is connected across two large parallel plates that are separated by 4.5 millimeter of air creating a potential difference of 9 Volt between the plates.
a) Find the electric field in the region between the plates.
b) An electron is released from rest at the negative plate. If the only force on the electron is the electric force exerted by the electric field of the plates, obtain the speed of the electron as it reaches the positive plate? (Mass of the electron =9.11 x 10-31 kilogram).
A solid cylinder utilized for smoothing concrete is rolling without slipping along a horizontal surface by a speed of 5.4 m/s. The cylinder has a radius R=0.58 m, mass m=69 kg and moment of inertia I=(1/2)mR2 . You bring the cylinder to rest by exert..
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A star is moving away from us at a speed of 0,05c. If a spectroscopic line from an atom in the star has a wavelength 1050 nm in its rest frame, what is the wavelength of that line as seen with us?
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
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A 0.165-{\rm kg} baseball pitchedhorizontally at 40.0 {\rm m/s} strikes a bat and ispopped straight up to a height of 30.0 {\rm m}.
A farm tractor tows a 3550-kg trailer up a 18?incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer
As an electron moves through a region of space, its speed decreases from 6.40 106 m/s to 2.20 106 m/s. Did the electron move to a higher potential or a lower potential
three particles p1 p2 and p3 are located at the points -2.00 -1.00 0 2.00 and 3.00 -1.00 respectively. p1 has a charge
A box of 350N weight is at rest at the bottom of the plank that is 6.0m long and rises 30 degree above the ground. what is the velocity of the box at the top of the plank
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