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When a phonograph turntable is switched off, it comes to rest from its original 33 1/3 rev/min in 4.85 s. What is the magnitude of the angular deceleration, assuming that it is constant while the turntable comes to rest?
the average thermal conductivity of the walls including the windows and roof of the house depicted in the figure below
A boy 11.0m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. How far from the tree will the dog catch the ball
After the skier on the hill had been moving for 5.0 s, friction of the snow suddenly increasedmaking the net force on the skier zero. what is new coefficient of friction? how fast would the skier now be going after skiing for 5.0s.
A meterstick (L = 1 m) has a mass of m = 0.121 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string?
Two runners start simultaneously from the same point on a circular 200-m track and run in the same direction. How far from the starting point will each have run at that instant
Consider a very high energy cosmic ray photon, with energy 109mp = 1018 eV as measured in Sun's rest frame, scattering off a cosmic microwave background photon with energy 2 x 10-4 eV . Establish the maximum energy of the scattered photon.
a concave spherical mirror has a radius of curvature of magnitude 17.4 cm. a determine the object position for which
After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.4 m/s. Miranda runs after her at a velocity of +4.4 m/s and hops on the inner tube. How fast do the two of them slide ac..
Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle, Î, above the horizontal away from the building. Find the angle and the initial velocity of the ball
a 1.00 kg object is attached to a horizontal spring. the spring is initially stretched by 0.500 m and the object is
A 85cm3 block of iron is removed from an 800C furnace and immediately dropped into 200 mL of 20C water. What percentage of the water boils away?
62. A 17.0-kg crate is to be pulled a distance of 20.0 m, requiring1210 J of work to be done. If the job is done by attaching a ropeand pulling with a force of 75.0 N, at what angle is the ropeheld?
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