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A pool cue strikes a 0.16 kg billard ball with an average force of 11 N. the cue remains in contact with the ball for 0.065s. the ball was intially at rest. what is the final speed of the ball
The amplitude of an oscillator decreases to 68.7% of its initial value in 30.0s. What is the value of the time constant
An airplane in level flight at an altitude h and a uniform speed v passes directly over a radar tracking station A. Using the equations of this chapter (rather than polar coordinates), attach the inertial frame of reference to the ground and suppose ..
A closely wound search coil has an area of 4.10 cm2, 140 turns, and a resistance of 50.0 Ω. It is connected to a charge-measuring instrument whose resistance is 35.0Ω. When the coil is rotated quickly from a position parallel to a uniform magnetic..
An electric car accelerates for 11 s by drawing energy from its 270-V battery pack. Find the minimum power rating of the car
A movie stuntman (mass 91.4 kg) stands on a window ledge 6.88 m above the floor. Grabbing a rope attached to a chandelier, he swings down to grapple by the movie’s villain (mass 66.9kg), who is standing directly under the chandelier.
Two masses m1 and m2 are connected by an ideal spring and placedon a horizontal frictionless surface as shown. they are pulledapart so that the spring is stretched an amount x0 and then theyare released simultaneously. the constant for the spring ..
a radiator has an emassivity of .90 and its exposed area is 1.23 m^2. What is the heat flow rate from the radiator
A 2.0 cm tall candle flame is 1.8 cm from a wall. You happen to have a lens with a focal length of 36 cm . 1. How many places can you put the lens
A piece of wood with a density of 730 kg/m3 is tied with a string to the bottom of a water-filled flask. What is the volume of the wood
A 5.00 kg block rests on a horizontal plane. A force of 10.0 N applied horizontally causes the block to move horizontally at a constant velocity. What is the coefficient of kinetic friction between the block and the plane?
A projectile is fired at an upward angle of 45° from the top of a 308m cliff with a speed of 198 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
Suppose an electron starting from rest is accelerated in a uniform electric field directed horizontally and having a magnitude of 3000N/C . The electric field covers a region of space 12.5cm wide.
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