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A 10 kilogram baby is perched at the rim of a 40 kilogram disk. The disk rotates freely in a horizontal plane at 1 rev/s. The baby crawls to point at the center of the disk. Find the frequency of rotation in rev/s when the baby arrives at the center (Suppose the size of the baby and the frictional torques are negligibly small).
Blood can carry excess heat from the interior to the surface of the body, where the heat is transferred to the outside environment. If 0.280kg of blood at a temperature of 37.0C flows to the surface and loses 1800J of heat, what is the temperature of..
A set of narrow vertical slits is located a distance D from a screen. The slits are equally spaced and have the same width. What is the spacing between the slits
Two vehicles collide head on while each is traveling at 72 km/hr. Assume all their kinetic energy is transformed into the thermal energy of the wreck. Calculate the temperature increase of each vehicle
A mass m is suspended to the ceiling by a spring with constant k and equilibrium length L0. It can swing and stretch in any direction below the ceiling. Find the Hamiltonian. Are any variables cyclic?
A person is watching water waves at the ocean and they notice the peak to peak distance between the waves is 3.4 m. How fast are the waves going
A bowling ball of mass M and Radius R (treated as a solid sphere) is thrown along a level surface so that initially (t = 0) it slides with a linear speed Vo but dows not rotate, How long does it take to begin rolling without slipping
A 4.94-g bullet is shot through a 0.99-kg wood block suspended on a string 2.00 m long. The center of mass of the blockrises a distance of 0.50 cm. Find the speed of the bullet as itemerges from the block if its initial speed is 393 m/s.
a positive charge q1 is located to the left of a negative charge -q2. on a line passing through the two charges there
Tritium has a half-life of 12.3 y and can also be used to date organic matter. If the activity of tritium is determined to be 3% of the expected activity, what is the age of the sample
A container is filled with water to a depth of 48.3 cm. on top ofthe water floats a 24.4 cm thick layer of oil with a density of 862kg/m3. what is the absolute pressure at the surface of the water? the acceleration of gravity is 9.81 m/s2.
A 45 cm diameter circular loop of wire is in a 0.525 T magnetic field oriented perpendicular to the plane of the loop. what is the average induced emf
question1an 8.0 meter uniform ladder of weight 355 n leans next to a smooth vertical wall at an angle 50 degrees with
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