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A family ice show is held in an enclosed arena. The skaters performto music playing at a level of 76.0 dB. This intensity level is too loud foryour baby, who yells at 70.5 dB.
(a) What total sound intensity engulfs you?
W/m2
(b) What is the combined sound level?
dB
A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion
a person pulls a toboggan for a distance of 30.0 m along the snow with a rope directed 20.0deg above the snow.the
At the bottom of an old mercury-in-glass thermometer is a 37-mm3 reservoir filled with mercury. determine how far (in mm) the mercury would expand into the capillary
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A particle (mass = 0.40 kg) moves in one dimension (x) and the potential energy is V(x) = (?1/2) q x2 with q = 7.35 J/m2. The initial conditions at t = 0 are velocity = 0 and position x0 = 2.9 m.
A blue ball is thrown upward with an initial speed of 24.3 m/s, from a height of 1 meters above the ground. What is the speed of the blue ball when it reaches its maximum height
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he empire state building is 450 meters high. A pennydropped from the top would have what speed when it hits the sidewalk? A baseball player pops a flyball 20.0m straight up and the cathcer tossess his mask to catch the ball. How long will the cathc..
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question a radiation detector indicates the decay activity of a radioactive material. which would have a higher reading
Compute the de Broglie wavelengths of (a) an electron, (b) a proton, and (c) a Au nucleus (A=197 g/mole) with a kinetic energy of 20 eV, and these same particles (parts d, e, & f) if they have a kinetic energy of 10 GeV. (Relativity is important f..
A body C of mass m=8 kg, initially at rest, slides without friction along the surface of a block B, Calculate the acceleration of the body C with respect to the block B
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