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The graph shows how the force component F cos along the displacement varies with themagnitude s of the displacement. Find the work done by theforce. (Hint: Recall how the area of a triangle is related tothe triangle's base and height.)
A string is wrapped around a pulley with a radius of 2.0cm. The pulley is initally at rest. Find the angular acceleration at which the string unwinds
the manufacturer wishes to produce a desktop version of the machine. this requires reducing the size of the drum to a
A hollow sphere of inner radius 7.4 cm and outer radius 8.4 cm floats half-submerged in a liquid of density 800 kg/m3. Calculate the density of the material of which the sphere is made
a boy throws a 2 kg rock at a 5 kg block of styrofoam that hangs by a 3 m long rope attached to a tree branch. when the
A golf ball strikes a hard, smooth floor at an angle of 30.0?? and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
A person with a mass of 78 kg is riding in an elevator that is accelerating upward at 170 m/s2. What is the person's apparent weight
question two thin slits are 0.050 mm apart. monochromatic light of wavelength 634 nm falls on the slits. if there is a
A torque of 24.0 N m is applied to a solid disk, accelerating itfrom rest to an angular velocity of 140.0 rpm. (The disk has a massof 2.00 kg and a radius of 0.200 m.) What is the final rotational kinetic energy of the disk?
Two equally charged insulating balls each weigh 0.10 g and hang from a common point by identical threads 30 cm long. What is the magnitude of the charge on each ball
Suppose an astronomical telescope is being designed to have an angular magnification of 31.6. If the focal length of the objective lens being used is 84.5 cm, Find the distance between the two lenses for a relaxed eye
A tennis ball rolls off the edge of a tabletop 0.850 above the floor and strikes the floor at a point 1.60 horizontally from the edge of the table. Find the time of flight of the ball.
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