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A 230g baseball is pitched at 32m/s , and it's spinning at 44 rad/s. What fraction of its kinetic energy is rotational? Treat the baseball as a uniform solid sphere of radius 4.4cm.
At a certain distance from the center of the Earth, a 5.0-{\rm kg} object has a weight of 3.5N. By what factor does its initial acceleration change
A current of 22.0 mA is maintained in a single circular loop of 1.90 m circumference. A magnetic field of 0.830 T is directed parallel to the plane of the loop. Calculate the magnetic moment of the loop
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
What is the potential energy of a comet of mass m around a star of mass M if it is in elliptical orbit that has a pericenter at a distance R and an apocenter at 4R? What is the total energy of the comet?
A 750.0 kg boulder is raised from a quarry 125 m deep by a long uniform chain having a mass of 575 kg. What is the max acceleration the boulder can have
A person has a far point of 33 cm. What power glasses would correct this vision if the glasses were placed 2.1 cm from the eye
Note the gravitational acceleration of equatorial sea level is g = 32.0088ft/s^2 and that its variation is 0.003ft/s^2/ 1000ft ascent. find the height in miles above its point for which g = 30.504 ft/s^2 and what is the weight of a 180lb man on top o..
An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member
The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propagate through the whole earth forming a hemisphere around the point of origin of the quark assuming that it occurred close to t..
A rod with an initial length of 4.67 m i heated from a temperature of 5 oC to 58 oC. What is the new total length of the rod
A solenoid of length 4.5 cm and diameter 0.85 cm is wound with 181 turns per cm. The current is decreasing at a rate of 36.6 A/s. What is the induced emf in one of the windings
A ball of mass 0.3 kg at the end of a rigid rod is undergoing circular motion in a circle of radius 0.5 m. Find the angular speed as a function of time
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