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A block is placed near the edge of horizontal turntable of radius 3.4m that is initially at rest. The coefficient of static friction between the block and the turntable is μs=0.19. What is the maximum value of the angular acceleration α that the motor can deliver so that the block will not slide the instant after the turntable begins to move?
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
A 20.4-kg boy slides down a playgroundslide that drops through a height of 2.15m. what is the boy's speed at the bottom ofthe slide
A 626 kilogram elevator starts from rest and moves upward for 2.50 second with constant acceleration until it reaches its cruising speed, 1.71 m/s. Find the average power of the elevator motor during this period
a charge q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of
Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio (assume it to be an isotropic source) and notices an echo from the cliff. what is the intensity of the music arriving at the cliff
White light illuminates an oil film on water. Viewing it directly from above, it looks red. What is the refractive index of the oil
A ray of light is incident on a plane surface separating two sheets of glass with refractive indexes 1.65 and 1.61. Compute the angle of refraction
A car at the Indianapolis-500 accelerates uniformly from the pitarea, going from rest to 285 km/h in asemicircular arc with a radius of 196m. Determine the radial acceleration of the car at this time
two point charges 5 muc and -8 muc are 1.2 m apart. where should a third charge equal to 5 muc be placed to make the
A racecar accelerates uniformly while starting from rest, find the total linear acceleration of a point on the outside of the tire when the car has traveled a distance of 200 m
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
An 18mm wide diffraction grating has rulings of 390 lines per mm. monochromatic light of 487 nm wavelength is incident generally on the grating. At what angle away from the normal (where the central maximum of the diffraction pattern occurs) is the n..
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