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A proton is placed midway between point A and B. The potential at point A is -20 V and the potential at Point B +20 V. The potential at midpoint is 0 V. The proton will
A) remain at rest
B) move toward point B with constant velocity
C) accelerate towards point A
D) accelerate towards point B
E) move toward point A with constant velocity
An astronomical telescope has an angular magnification of -144, What is the focal length of the eyepiece
A parallel-plate capacitor is charged to a potential difference of 12 V. The area on each plate is 20 cm2 andthe spacing between plates is 0.15 mm. Find thef ollowing: the electric field between the two plates. the total charge on each plate.
consider a circuit consisting of a battery of voltage v and a parallel plate capacitor of capacitance of c0. if a
Estimate the force on a 145-gram baseball if it hits the bat at 50 miles per hour and stays in contact with the bat for 0.1 second
A circular platform is supported by 8 identical steel wires. The platform and its uniformly distributed load has a total mass of 3.7 kg. The breaking stress of steel is 7.50 x 108 pascals.
A hockey player hits a punk so that it comes to rest in 9s after sliding 30 m on the ice. Determine (a) the initial velocity of the punk, (b) the coefficient of friction between the punk and the ice.
An 83 kg fullback moving east with a speed of 5.4 m/s is tackled by a 96 kg opponent running west at 3.8 m/s, find the velocity of the players immediately after the tackle
A simple generator is designed to operate in the outback of us. The circular loop has a radius of 5.70cm and consists of 200 windings. The armature rotates in a magnetic field of 0.42T at a rate of 3200 revolutions per minute. what is the expected ou..
Write three methods of increasing the volume of a balloon
Yellow light propagates through vacuum at a speed of 3 x 10^5 km/sec, with a wavelength of 590 nm. What is the frequency in vacuum
from the top of a 75m building, a 1.00 kg ball is thrown downwards with initial velocity of 8.00 m/s. what is the mechanical energy lost due to air resistance
The focal length of a bi-convex lens is 10 cm. The focal length of a convex-concave thin lens is -20 cm. If placing them in parallel and in close contact, what is the compound focal length
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