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A bicycle with wheels 48 cm in radius travels down the street with an initial speed of 7.00 m/s.
(A) What is the initial angular velocity of the wheels?
(B) Assuming the angular acceleration is constant, what angular acceleration must occur if the bicycle is to stop in four full rotations of the wheels?
The temperature of the surface of a certain star is 7500K. Most hydrogen atoms at the surface of star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could e..
Consider a cylindrical shell of inner radius a = 1.10 cm, outer radius 2a, and length L = 2.05 m. This cylinder has a total charge Q = 138 nC. Find the potential difference between the inner and outer surfaces of the cylindrical shell
A 50 kg motionless student stands adorably on a frozen friction surface. What is the velocity (vector) of the adorable student after catching the shot
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 8.00km below the surface. What's the water pressure at that depth? Find the fractional volume change in the spoon due to compression forces.
A beam of unpolarized light in air is incident at an angle of 59.0? (with respect to the normal) on a plane glass surface. What is the angle of refraction of the transmitted beam
Find the intensity of the starlight at the Earth, Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year
The human body can survive an acceleration trauma incident (sudden stop) if magnitude of the acceleration is less than 250;{rm m}/{rm s}^{2}.
A 50-kilogram woman balances on one heel of a pair of high heel shoes. If the heel is circular with radius of .5 cm, what pressure does she exert on the floor.
A signal starts at x point. As it travels to y point it loses eight db. At point y the signal is boosted by ten db. As the signal travels to point z it loses 7 db.
Find out the magnitude of the impulse delivered to a soccer ball when a player kicks it with a force of 1350 . Assume that the player's foot is in contact with the ball for 6.00×10-3.
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