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Shelly pushes a 40.0 kg box of paper with a force of 196 N along level ground a distance of 30.0 m. How much work does she do on the box of paper?
A 53.5 kg person takes a nap in a (lightweight) backyard hammock. Both ropes supporting the hammock are at an angle of 12.9° above the horizontal. Find the tension in the ropes.
A massless spring is compressed between blocks of mass x and 5x on a smooth horizontal frictionless surface. What fraction of the total energy does the small block recieve
A thin uniform cylindrical turntable of radius 2.5 m and mass 32 kg rotates in a horizontal plane with an initial angular speed of 10 rad/s. Calculate the loss of energy to thermal energy
One particle has a mass of 4.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
a rotating merry-go-round makes one complete revolution in 4.0s.a what is the linear speed of a child seated 1.2m from
A typical person can detect light with a minimum intensity of 4.0 X 10-11 W/m2. For light of this intensity and A = 550 nm, how many photons enter the eye each second if the pupil is open wide with a diameter of 9.0 mm?
a 4.0-kg hanging mass is connected by a string over a pulley to a 8.0-kg block ona frictionless ramp with an angle of inclination of 40 degrees above the horizontal
If the radius of the equipotential surface of a point charge is 21.0m and is at a potential of +3.50kv
A delinquent is able to accelerate a 200 g snowball from rest to a speed of 20 m/s over a distance of 1.2 m. What is the work (in J) done on the ball by this troubled youth? You may assume that the snowball travels perfectly horizontally (i.e., paral..
A 0.15 kilogram billiard ball whose radius is 2.9 centimeter is given a sharp blow by a cue stick. Obtain how long does the ball slide before it begins to roll without slipping
A meter stick is balanced horizontally on a pivot attached at the 50-cm mark. A 300-gram mass is attached to the right half of the meter stick 30 cm from the pivot point and it swings down. You wish to rebalance the meter stick horizontally with a 45..
Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 2.00 m/s. What is their frequency?
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