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a) A stationary proton is accelerated through a potential difference of 2.5 kiloVolts. Find its subsequent velocity in m/s.
b) The proton is next sent through 2 oppositely charged parallel metallic plates having a potential difference of 250 V. Find the absolute value of the B field that must be applied perpendicular to the plates to keep the proton on a straight line as it passes through the plates.
Average relative intensity of a person's voice is 58 dB. A microphone and amplification system increases the relative intensity to 70 dB. By what factor did the amplification system increase the sound intensity?
A person with a mass of 52 kg runs with a speed of 6.8 m/s jumps onto the outer rim of a merry-go-round. The merry-go-round has a radius of 1.5 m and can be modelled as a large disk. The merry-go-round was initially at rest before the person jumped o..
a cart of mass 2.3 kg is moving with a velocity of 15.2 ms. it makes a head-on perfectly inelastic collision with a
A 2.5 kg container of water sits on a scale A. A cube of aluminium with sides of length 9.0 cm is suspended from a spring scale B so that one sixth of the block is submerged in the water. What is the reading (in N) on scale A?
A microphone in the ocean is sensitive to sounds emitted by porpoises. To produce a usable signal, sound waves striking the microphone must have an intensity of 10.7 dB. If porpoises emit sound waves with a power of 0.0491 W, how far can a porpois..
a circuit has a 33 resistor and a 10.2 mh inductor.calculate the theoretical phase difference in degrees between the
What frequency should you set a wave driver to if you want to see the fundamental frequency if you have a 2.8 m total-length string, stretched over a support 1.2 m from the wave driver, and a 0.35 kg mass hanging off the end of the string? The string..
A 2.05 g ping-pong ball rubbed against a wool jacket acquires a net positive charge of 1.26 ?C. How many electrons were removed from the ping-pong ball
A projectile with a mass of 9.10 g is traveling at a speed of 1.10 km/s, determine the following. Kinetic energy of the projectile in kilojoules: Kinetic energy of the projectile in kilojoules, if its speed is reduced with a factor of two:
Identical blocks are projected up each track with the same initial speed v0. On the longer track the block slides upward until it reaches a maximum height H above the ground. find the total height for the block on the shorter track
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
You are on an archaeological dig and discover a strange artifact. It is a utensil that appears to be carved out of an elephant's tusk. You analyze it and discover that it has 0.625 the amount of carbon-14 you would find in a living specimen. 1. How m..
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