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A source emits sound uniformly in all directions. A radial line isdrawn from this source. On this line, determine the radialpositions of two points, 1.28 m apart, such that the intensitylevel at one point is 2.46 dB greater than that at the other.(a) What is the smaller radial position (in m)?(b) What is the larger radial position (in m)?
Certain fish, such as the Nile fish (Gnathonemus), concentrate charges in their head and tail, thereby producing an electric field in the water around them. find the strength of the magnetic field at the receptor cells
A 2kg block is moving to the right at 1.0m/s just before it strikes and sticks to a 1.0 kg block initially at rest
The wavelength of visible light varies from 0.40 ?m to 0.70 ?m as the color of the light changes from violet to red. Calculate the energy of a photon whose wavelength is 0.43 ?m
An unstable atomic nucleus of mass 1.92 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.00 10-27 kg, Find the velocity of the third particle
A continuous stream of water runs from the faucet into a kitchen sink, picking up speed as it falls. What is the diameter of the flow tube of water
A light beam is incident on a piece of sodium chloride (n = 1.544) at the Brewster's angle. Find the angle of refraction for the transmitted ray
Sheena can row a boat at 2.95 mi/h in still water. She needs to cross a river that is 1.17 mi wide with a current flowing at 1.79 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream.
A particular engine has 14.8% efficiency and is capable of doing work at a rate of 253 horsepower. At what rate will this engine exhaust heat
What is wave speed
A 17.00 kg block is pushed up a frictionless inclined plane that makes an angle of ? = 33 o with the horizontal direction. What force is needed to move the block with constant speed
A tank having a volume of 0.11 m3 contains helium gas at 170 atm. How many balloons can the tank completely fill
question1a current experiment demonstrated diffraction of phthalocyanine molecules 514.54 gmol. the molecules have a
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