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the upward normal force exerted by the floor is 610 n on an elevator passenger who weighs 660 nawhat is the reaction
a place-kicker must kick a football from a point 360 m about 40 yards from the goal half the crowd hopes the ball will
two cars start off at rest 85 m apart they start driving directly towards each other car 1s acceleration have a
the left ventricle of the heart accelerates blood from rest to a velocity of 24 cms2 if the displacement of the blood
a region of space contains a uniform electric field oriented along the y-axis a frame of surface area a is placed
a boat crossing a 1430 m wide river is directed so that it will cross the river as quickly as possible the boat has a
consider a rock that is thrown off a bridge of height 26 m at an angle 21deg with respect to the horizontal as shown
in a historical movie two knights on horseback start offvat rest 85m then start riding towards each other sir georges
one simple model for a person running the 100rm m dash is to assume the sprinter runs with constant acceleration until
what is the magnitude of the average acceleration of a skier who starting from rest reaches a speed of 90 ms when going
two workers are moving a slab of ice m 410 kg across the factory floor as seen from above one worker exerts a force of
charge q1 601middot10-8 c is placed at the origin charges q2 -133middot10-8 c and q3 175middot10-8 c are placed at
flies flap their wings at frequencies much too high for pure muscle action a hypothesis for how they achieve these high
a factory worker pushes a 284 kg crate a distance of 49 m along a level floor at constant velocity by pushing downward
a bird flies 30 km due west and then 20 km due north what is the magnitude of the birds
an objects average density is defined as the ratio of its mass to its volume the earths mass is 594 times1024 kg and
late one night on a highway a car speeds by you and fades into the distance under these conditions the pupils of your
an asteroid of mass 58000 kg carrying a negative charge of 150 c is 180 m from a second asteroid of mass 52000 kg
a 10000 car comes to a bridge during a storm and finds the bridge washed out the 650 driver must get to the other side
scientists want to place a 42000 kg satellite in orbit around mars they plan to have the satellite orbit a distance
a charge of 500 mewc is placed at each corner of a square 0100m on a side determine the magnitude and force on each
consider an ideal gas at 270 degrees celsius and 100 atmosphere pressure imagine the molecules to be uniformly spaced
a daredevil decides to jump a canyon its walls are equally high and 12 m apart he takes off by driving a motorcycle up
saturated water vapor at 500 kpa initially occupies 025 m3 within a constant pressure piston-cylinder arrangement the
on a part-time job you are asked to bring a cylindrical iron rod of density 7800 kgm3 length 921 cm and diameter 300