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Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.00 m/s and the other's was 3.00 m/s in the opposite direction, what will be their speeds after the collision?
The cutoff wavelength for a metal is found to be 300. nm. Calculate the maximum velocity of the emitted electrons
A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 14m. How long does David measure the train car to be
You place 106 moles of hydrogen gas in a balloon of volume 2.4 m3, and find the pressure to be 1.3 times atmospheric pressure. What is the typical speed of a hydrogen molecule
A moving particle encounters an external electric field that decreases its kinetic energy from 8650 eV to 7540 eV as the particle, Determine the charge of the particle. Include the algebraic sign (+ or ?)
A 0.4 guitar string is vibrating in its fundamental frequency. The maximum acceleration of a point at the middle of the string is 8400m/s^2 amd the maximum velocity of that point is 3.80m/s. What is the amplitude of the wave? what is the wave speed..
At the end of the trip she measures the pressure to be 3 105 Pa. Ignoring the expansion of the tires, find out the air temperature inside the tires at the end of the trip.
Relationships between wavelength, frequency and speed.
A copper (cu) penny has a mass of 3.11 g. The molar mass of copper is 63.5 g/mol. How many atoms of Cu are there ? what fraction of the electrons have been removed
A roller coaster seat exerts a normal force of 120N on a 40kg passenger at the apex of a vertical loop. what is the speed of the coaster
A 13-kg block rests on a level floor. A 300-g glob of putty is thrown at the block so that the putty travels horizontally, hits the block, what is the initial speed of the putty
A solid block is suspended from a spring scale. When the block is in air, the scale reads 37.1 N, when immersed in water the scale reads 32.2N, What is the density of the oil
A soccer ball leaves the foot of a player with an intitial velocity of 22 m/s at an angle of 30 degrees above the positive x-axis
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