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a figure skater is spinning at a rate of 10 revs with her armsoutstretched she then draws her arms in to her
a series circuit contains only a resistor and an inductor the voltage v of the generator is fixed if r18omega and
two children standing on opposite sides of a merry-go-round are trying to rotate it they each push in opposite
a missile of mass 105 x102 kg is fired from a plane of mass470 x 103 kginitially moving at a speed of 250 x102 ms if
you step onto a hot beach with your bare feet a nerve impulsegenerated in your foot travels through your nervous system
a bicycle wheel of radius 22 cmis mounted at the middle of an axle 44 cm long the tire and rimweigh 39 n the wheel is
a cube of iron 4cm on a side is floated in a bath of mercury the density of iron is 787 gcm3 what percent of the cubes
the drawing shows a laser beam shining on a plane mirror that isperpendicular to the floor the beams angle of incident
a toy racing car moves with constant speed around the circle when its coordinates are x 0 y 3m its velocity is 6ms i
a boat that travels at a speed of 675 ms in still water isto go directly across a river and back the current flows at
a lead ball is dropped into a lake from a diving board 998 m above the water after entering the water it sinks to the
a uniform electric field of magnitude 300 vm is directed in the positive x direction a 100 microc charge moves from the
a 182 kg weather rocket is loaded with 97 kg of fuel and firedstraight up it accelerates upward at 2998 ms2 for349 s
1 a square loop of wire lies in the plane of the page a decreasing magnetic field is directed into the page the induced
a truck covers 400 m in 850 s while smoothly slowing down to a final speed of 280 msa find its original speedb find its
a railroad car of mass 24000 kg is moving with a speed of403ms it collides and couples with three other coupled
a solid square pinewood raft measures 36m on a side and is 270 m thick what is the total mass of swimmers that the raft
a woman finds the front windshield of her car covered with ice at-120degc the ice has a thicknessof 465 multiplied by
a dentists chair with a patient in it weighs 2260 n the output plunger of a hydraulic systembegins to lift the chair
you are moving into an apartment and take the elevator to the6th floor suppose your weight is 770 n and that of
a calculate the total force of the atmosphere acting on the topof a table that measures 16 mmultiplied by 15 m nb what
an rlc circuit includes a 10 resistor15 microf capacitor and 50 mh inductor the capacitor is ratedat 1200 v the circuit
if 40 l of antifreeze solutionspecific gravity 080 is added to 35 l of water to make a 75 l mixture what is the
two people wish to push a big beer freezer weighing 2000 n up aramp inclined at an angle of 370o with the horizontal
a bottle has a mass of 3500 g whenempty and 9840 g when filled with water when filled with another fluid the mass is