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Sharon is standing on a giant skateboard that is initially at rest. If we ignore frictional effects with the floor, what is the momentum of the skateboard if Sharon walks to the right with a momentum of 1000 kg*m/s?
zero
1000 left
2000
1000 right
A negative charge -0.550 µC exerts an upward 0.600 N force on an unknown charge 0.210 m directly below it. What is the unknown charge (magnitude and sign)
the electric field has a constant value of 2.7 x 105 vm and is directed downward. the field is the same everywhere. the
In coming to a stop, a car leaves skid marks 76 m long on the highway. Assuming a deceleration of 6.50 m/s2, estimate the speed of the car just before braking. Express in m/s.
A 3.2 m long pendulum is released from rest when the support string is at an angle of 23° with the vertical. What is the speed of the bob at the bottom of the swing
A 10.7 kg bucket of water is suspended by a very light rope wrapped around a solid uniform cylinder 0.32 m in diameter with mass 14.2 kg. Calculate the torque due to the bucket of water
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. How many dark fringes are observed when 600 nm light illuminates the slides from directly above
A 1.00-µF capacitor is connected to a 12.0-V battery. How much energy is stored in the capacitor
a uniform electric field of magnitude 445 nc pointing in the positive x-direction acts on an electron which is
A dart is thrown horizontally with an initial speed of 12 m/s toward point P, the bull's-eye on a dart board. How far away from the dart board is the dart released
A car slows down with an acceleration that has a magnitude of3.2 m/s2. While doing so, it travels 120 m in the + xdirection and ends up with a velocity of +4.0 m/s. a) what is the car’s initial velocity?
A 63.5kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.35kg tool away from her at 3.60m/s relative to the space station. With what speed will she begin to move\\
Cheetahs, the fastest of the great cats, can reach 45 miles per hour in 2.0 second starting from rest. obtain their acceleration and the distance
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