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A hammer thrower spins with an angular velocity of 1200°/s. The distance from his axis of rotation to the hammer head is 1.2 m.
a. What is the linear velocity of the hammer head?
b. What is the normal acceleration of the hammer head?
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 0.72 eV. What is the width of the square well
A car slams on its brakes and skids 50m before coming to a stop. If the coefficient of kinetic friction is 0.65 how fast was the car initially going
1.9*10^20photons per second are emitted by a 70W lightbulb, the wavelength is 550nm. How many photons per second are entering the pupil
In a nebula, the amount of interstellar extinction in the visible wavelength band is 1.1 magnitudes. The thickness of the nebula is estimated to be 16 pc and it is located 458 pc away.
Suppose that when you ride on your 8.50 kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 65.5 lb/in2 and the area of contact between each tire and road is 7.13 cm2, what is your wei..
A hydrogen atom is in its eighth excited state, corresponding to n = 9. Find the radius of the electron's Bohr orbit
A 200 gram ball, moving at 6.0 m/s, is catching up and colliding elastically witha 600 gram ball that is moving along the same line
A uniform cylinder of radius R and mass M is mounted so as to rotate freely about a horizontal axis that is parallel to, What is the rotational inertia of the cylinder about the axis of rotation
What is the speed of crate hit ground
You are examining a flea with a converging lens that has a focal length of 4.40 cm. If the image of the flea is 8.00 times the size of the flea, how far is the flea from the lens
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, determine find the electric field just inside the paint layer
An athlete executing a long jump leaves the ground at a 35° angle and lands 7.30 m away.
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