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the earth spins on its axis once a day and orbits the sun oncea year 36524 days take the positive direction for the
a skier of mass 72 kg is pulledup a slope by a motor-driven cablea how much work is required to pull him45 m up a 30deg
certain neutron stars extremely dense stars are believed to berotating at about 100 revs if such astar has a radius of
a charged suphere of mass 2810-4 kg is suspended from astringan electric force acts horizontaly on the suphere so
a wagon is rolling forward on level groundnbsp friction is negligiblenbsp the person sitting in the wagon is holding a
when a resistor is connected across the terminals of an acgenerator 114 v that has a fixedfrequency there is a current
when 1g of natural gas is burned in a stove about 56kj ofheat is produced how much mass is lost in the process can this
a 915 n crate rests on thefloor how much work is required to move it at constant speed 55 m along the floor against a
a 170 kg loudspeakeris suspended 100 m below theceiling by two 310 m longcables that angle outward at equal angleswhat
equal amounts of heat are added to equal masses of iron andsilver at the same intial temperaturea which metal will have
original problem a person walks at constant speedv1 along a straight line from a to b and then back alongthe line from
a 494-g bullet is shot through a 099-kg wood blocksuspended on a string 200 m long the center of mass of the blockrises
emilie wishes to fly to phun city a place where physics geeksrule the land loacted 800 km n of her present postion her
when a trains velocity is 120 rm ms eastward raindrops thatare falling vertically with respect to the earth make traces
an explosion breaks an object into two pieces one of which has 15times the mass of the other if 7500 j were released in
if the frequency of blue light is 6 x 1014 cyclessecond andits wavelength is 5 x 10-7 m find the speed of light by
a cart of a mass 300 kg is pushed up a track at an angle of44 degrees from the bottom to a position that is 30m higher
a 30 kg girl whos running at 3 ms jumps on a stationary 10 kg sled on a frozen lake how fast does the sledwith the girl
as you finish listening to your favorite compact disc cdthe cd in the player slows down to a stop assume that the cd
a 73 kg canoeist standsi n the middle of her 22 kg canoe thecanoe is 30 m long and the end that is closest to land is
a solenoid 850 cm long has a radiusof 260 cm and a winding of1100 turns it carries a current of360 a calculate the
a 54 kg ice skater is moving at 39 ms when she grabs theloose end of a rope the opposite end of which is tied to apole
a typical ten-pound car wheel has a moment of inertia of about035 rm kgcdot m2 the wheel rotatesabout the axle at a
a satellite is placed in orbit 72 x 105 mabove the surface of jupiter jupiter has a mass of 190 1027 kgand a radius of
an elevator has a mass of 1170kg and carries a maximum load of 786 kg a constant frictionalforce of 4260 n retards its