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the damage caused by electric shock depends on the current flowing through the body 1 ma can be felt and 5 ma is
a 1000 kilogram boat travels across a lake when its engine is shut off magnitude of friction between water and boat is
a computer hard drive disk with a diameter of 35 inches rotates at 7200 rpm the read head is positioned exactly halfway
a 330 kilogram birdfeeder hangs from the tip of a 160 meter pole that sticks up from the ground at a 650 degree angle
a thermos contains 150 cm3nbspof coffee at 850c to cool the coffee you drop two 11 gram ice cubes into the thermos the
a train moving with a constant speed of 75 kmhr moves east for 45 minutes then in a direction 20o east of north for 60
a 510 kilogram swimmer with an initial speed of 128 ms decides to coast until she comes to rest if she slows with
a 020 kilogram ball is thrown straight up into the air with an initial speed of 18 ms compute the momentum of the ball
a block of wood weighs 160 newton and has a density that equals 60 that of seawater find what additional downward
on vacation your 1200 kilogram car pulls a 600 kilogram trailer away from a stoplight with an acceleration of 120 ms2
find what plate separation is required for a parallel plate capacitor to have a capacitance of 740 nf if the plate area
sam walks 040 kilometer in a direction 600o west of north then goes 050 kilometer due west determine what is his
a parallel plate capacitor has a plate area of 0535 m2 and a plate separation of 145 millimeter estimate what is its
a 20 kilogram mass hang from two ropes that are attached to the ceiling each rope makes an angle of 60o with the
a powerful bolt of lightning can carry a current of 225 kaa treating a lightning bolt as a long thin wire determine the
you are on a roof that is 15 m high and you are launching balloons off at an angle of 30o above the horizon with a
a crate is dragged 30 meter along a rough floor with a constant velocity by a worker applying a force of 500 newton to
a proton travels horizontally with speed 4 x 106 ms in a vertical uniform magnetic field of 15 tesla 15 x 104 gauss
a generator uses a coil that has 490 turns and a 075 t magnetic field the frequency of this generator is 600 hertz and
a 700 gram bullet when fired from a gun into a 120 kilogram block of wood held in a vise penetrates the block to a
a rod of length 250 centimeter has linear density mass-per-length given by the following equation where xnbspis the
the rope and the pulleys are mass less and there is no frictiona determine the tension in the rope andb determine the
an 800 gram bullet is fired into a 220 kilogram block initially at rest at the edge of a frictionless table of height
find what is a reasonable length of time for a normal person to run two meters from a dead stop to full speed
a 20 centimeter tall object is located in front of a mirror a 10 centimeter tall upright image is formed behind the