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A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 5.00 m above the base of the hill. We can model this ball as a thin-walled hollow sphere. How much rotational kinetic energy did it then have?
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A circular loop of wire has radius R = 5 cm and sits in a uniform magnetic field B = 0.2 Tesla pointing along the axis of the loop. what will be the magnitude of the induced emf in the coil
A ray of light is incident on the outer glass wall of an aquarium which have a refractive index of 1.51. If the reflected portion of the light is completely polarized at what angle to the normal does the ray enter the water
The acceleration of gravity is 10 m/s2. What is the acceleration of a 39 kg pail of cement that is pulled upward (not sideways) with a force of 421 N? Answer in units of m/s2.
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +3.10 pC. (a) What percentage of the electrons originally in the cube was removed.
Find an expression for work done by the gas
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. How many electrons pass through the wires connected to the patient
A block (mass = 2.4 kg) is hanging from a massless cord that is wrapped around a pulley, Find the angular acceleration of the pulley and the tension in the cord
When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0285 m (1.12 inch) of rain falls over an area of 2.59×106 m2 (one square mile)? (b) If the average energy needed to h..
You take a trip to Pluto and back (round trip 11.5 billion km), traveling at a constant speed (except for the turnaround at Pluto) of 44500 km/hr. How long does the trip take, in hours, from the point of view of a friend on earth
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
suppose that two objects attract each other with a gravitational force of 16 units. what would be the new force of attraction between the two objects
how fast does it move after the bullet emerges. The critical angle of refraction for calcite is 68.4^0 when it forms a boundary with water. use this information to find the speed of light in calcite.
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