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A bicycle has wheels of radius 0.32 m. Each wheel has a rotationalinertia of 0.080 kg*m2 about its axle. The total mass of the bicycle includingthe wheels and the rider is 79 kg. When coasting at constant speed,what fraction of the total kinetic energy of the bicycle (includingrider) is the rotational kinetic energy of the wheels?
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. For how long (in hours) is the sample usable
What factors affects a team cohesiveness? If you were a team leader, how to be more and foster better relationships among team members?
An arrow is shot at an angle such that it's horizontal velocity is 40 m/s and it's vertical velocity is 20 m/s. Find the horizontal distance the arrow will travel before hitting the ground
Two point charges Q1 = 3.6 µC and Q2 = 8.0 µC are initially very far apart. They are then brought together, How much work does it take to bring them together
find the velocity of their center of mass before the collision.
Your car horn happens to have the unusual property of emitting a pure tone at a frequency of 640. Hz. What is the frequency of the echo
White light, with frequencies ranging from 4.20×1014 Hz to 7.74×1014 Hz, is incident on a calcium surface. Calculate the lowest frequency for which no electrons are ejected
A beam of red light, whose frequency is 4.30*10^14, passes through a piece of dense flint glass (n=2.13) in 25 ps (picoseconds). Find the thickness of the glass
Ocean waves are traveling to the east at 4.1 m/s with a distance of 18 m between crests. With what frequency do the waves hit the front of a boat when the boat is at anchor
In a fluorescent tube of diameter 3 cm, 3 times 1018 electrons and 0.75 times 1018 positive ions (with a charge of +e) flow through a cross-sectional area each second
The water passing over Victoria Falls, located along the Zambezi River on the border of Zimbabwe and Zambia, How much internal energy is produced per kg as a result of the fall
on turning a corner ,a motorist rushing at 44m/s find a child on road 100m away. he applies the brakes so as to stop the motorcar within 1m of child. calculate the time required to stop.
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