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a uniform 14-kg rod that is 077 m long is suspended at rest from the ceiling by two springs one at each end both
a cannon of mass 614 x 103 kg is rigidly bolted to theearth so it can recoil only by a negligible amount the
1 the force between two parallel wires carrying currents in thesame direction isa repulsive because the electrons in
the sound intensity is 00112 wm2 at a distance of18 m from an isotropic point source of sounda what is the power of the
two people start at the same place and walk around a circular lakein opposite directions one walks with an angular
an x-ray machine uses 260 kv rms at800 ma rms when it is operating the power source is a 420 v rms linea what must be
assuming the lower leg and foot together have a combined mass of 4kg and the center of mass is located at the center of
what are the organic chemical groups that characterize carbohydrates how are the carbohydrates classified according to
a 150-n sled is pulled up a 28 degree slope at a constant speed by a force of 100n what is the coefficient of kinetic
as you stand by the side of the road a car approaches you at aconstant speed sounding its horn and you hear a frequency
a middle-aged man starts to wear eyeglasses with lenses of20 d that allow him to read a book held as close as 25
an ideal gas at 145 degc and a pressure of 110 x 105pa occupies a volume of 417 m3a how many moles of gas are presentb
a block m1is resting on a frictionless horizontal surface this blockis connected to a block m2 by a string over
a microwave oven is powered by an electron tube called amagnetron that generates electromagnetic waves of frequency215
a 21 kg mass is attached to a 04 m long massless string andswings as a pendulum if the maximum angle achieved by the
a cord 15m long has a mass of 300 grams ifthe tension were provided by a 25 kg mass how long would the cord be to
a simple pendulum has a mass of 0250kg and a length of 400 m it is displacedthrough an angle of 110deg and then
the flywheel of a steam engine runs with a constantangular speed of 156 revmin when steam is shut off the friction of
a seconds pendulum is one that moves through itequilibrium position once each second the period of the pendulumis 2000
a rock is thrown from 500-m-high cliff with an initial velocity of 70 ms at an angle of 530 degrees above the
two identical cylindrical vessels with their bases at the samelevel each contain a liquid of density 115 gcm3 thearea
a plane mirror is located at the origin a converging lenswith focal length 500 m is located at x 10 m an object
50kg ball tied to the end of a 13m light cord is revolvedin a horizontal plane with the cord making a 30 degree angle
two capacitors are identical except that one is empty and theother is filled with a dielectric kappa 440 the empty
objects with masses of 245 kg and a545 kg are separated by 0490 ma find the net gravitational force exerted by these