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a pitcher throws a curveball that reaches the catcher in 064 s the ball curves because it is spinning at an average
a 92 kg astronaut and a 1200 kg satellite are at rest relative to the space shuttle the astronaut pushes on the
suppose air with a density of 129 kgm3 is flowing into a venturi meter the narrow section of the pipe at point a has a
the mars rover is moving along at a speed of 2 ms it knows how to motor in a straight line and in its sights it spies a
an electron has a velocity of 60 106 ms in the positive x direction at a point where the magnetic field has the
an automatic dryer spins wet clothes at an angular speed of 42 rads starting from rest the dryer reaches its operating
a wind turbine is initially spinning at a constant angular speed as the winds strength gradually increases the turbine
if you shake one end of a taut rope steadily five times each second what would be the period of the sinusoidal wave set
a conductor is found to be transparent to ultraviolet light with wavelengths shorter than 200 nm assuming a
two parallel square metal plates side length 13 cm are separated by a dielectric material with a dielectric constant 39
a disk of radius r has a hole in the center of radius a like an audio compact disk if the disk holds a uniform surface
a mass of 4 kg is pulled along a 0 deg frictionless plane by a mass of 5 kg that is hanging perpendicular connected by
a tandem two-person bicycle team must overcome a force of 155 n to maintain a speed of 910 ms find the power required
youre driving along a rural highway in a light rain at 62 mph 28 ms just after rounding a bend you see a 30-mph 13 ms
two skaters a and b of equal mass are moving in clockwise uniform circular motion on the ice their motions have equal
having trouble figuring out the total time it takes for something following the path of a brachistochrone starting at
a motorist drives along a stright road at a constant speed of 150 ms just as she passes a parked motorcycle police
a deuteron is accelerated from rest through a 10-kv potential difference and then moves perpendicularly to a uniform
inside a computer mouse a delicate spring k 85 nm deflects a distance of 3 mm how much force is required to cause this
adult cheetahs the fastest of the great cats have a mass of about 7 kg and have been clocked at up to 70 mph 31msa how
the height of a helicopter above the ground is given by h 300 t3 where h is in meters and t is in seconds after 200 s
an electron accelerated from rest through a voltage of 470 v enters a region of constant magnetic field if the electron
a 670-microc particle moves through a region of space where an electric field of magnitude 1250 nc points in the
an electron moves in a region where the magnetic field is uniform and has a magnitude of 80 mt the electron follows a
during an adiabatic process the temperature of 392 moles of a monatomic ideal gas drops from 485 oc to 205 oc for this