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During the pitching motion, a baseball pitcher exerts an average horizontal force of 274 Newton against the 0.158 kilogram baseball while moving it through a horizontal displacement of 1.3 meter before releasing it. Initial ball velocity was zero. At release find what was the velocity of the ball?
object o stands on the central axis of a concave spherical mirror at a distance of 40 cm. the distance between the
two small spheres spaced 50.0 centimeters apart have equal charge. how many excess electrons must be present on each
The figure below shows a composite slab with dimensions d1 = 13.6 cm, d2 = 2.80 cm, and d3 = 12.5 cm. Half the slab consists of aluminum (density = 2.70 g/cm3) and half consists of iron (density = 7.85 g/cm3). What are the coordinates of the center o..
if a dielectric is inserted between the plates of a parallel-plate capacitor that is connected to a 100-v battery which
A 31.0-kg crate rests on a horizontal floor, and a 72.5-kg person is standing on the crate. Determine the magnitude of the normal force that the crate exerts on the person
a singly charged 7li ion has a mass of 1.16 10-26 kg. it is accelerated through a potential difference of 504 v and
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
A 64 kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal, What is the magnitude of the kinetic frictional force
A crate of mass 10.2 kg is pulled up a rough incline with an initial speed of 1.52 m/s. What is the change in kinetic energy of the crate
Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
a roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. a passenger feels
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