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Points A and B have electric potentials of 231V and 129 V respectively. When an electron is released from point A arrrives at point C its Kinetic energy is KEa, When the electron from rest is released at point B, however it kinetic energy reaches point C is Kb= 4KEa. What is the electric potential at C?"
Beams of high speed protons can be produced in "guns" using electric fields to accelerate the protons. Find what acceleration would a proton experience if the gun's electric field were 1.30 x 104 N/C
two long vertical wires are separated by 2m. the one on the left carries a current of 8 a upward and the other carries
What is the wavelength of the waves on the string?
A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 12 cm. Find the velocity at which the pair move immediately after the collision
A spacecraft is traveling with a velocity of v0x = 4330 m/s along the +x direction. Two engines are turned on for a time of 728 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.74 m/s2.
A lead bullet with a mass of 0.03 kg traveling at 187 m/s strikes an armor plate and comes to a stop. what is the temperature change
The first puck is deflected 38 below the +x axis and moves off at 0.37 m/s. Find out the speed and direction of the second puck after the collision.
find the coefficient of kinetic friction between a 4.3- block and the horizontal surface on which it rests if an 80
A 12.6 V battery is in series with a resistance of 0.324 Ohms and an inductor. What's the voltage drop across the inductor at this time
A stretched string has a fundamental frequency of 175 Hz. Discover the new frequency if you simultaneously do all of the following 3things: you increase the tension in the string by a factor of 4, and you double its length and you decrease the mass p..
In each cycle of its operation, a refrigerator removes 10 J of heat from the inside of the refrigerator and releases 38 J of heat into the room. How much work per cycle is needed to operate this refrigerator.
an elevator is moving downward when someone presses the emergency stop button. the elevator comes to rest a short time
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