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A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. The film has the minimum nonzero thickness such that it appears dark due to destructive interference when viewed in visible light with wavelength 621 nm in vacuum. Assuming that the visible spectrum extends from 380 to 750 nm, what is the longest visible wavelength (in vacuum) for which the film will appear bright due to constructive interference?
A loudspeaker at a rock concert generates 10-2 W/m2 at 18 m at a frequency of 1 kHz. Suppose that speaker spreads its energy uniformly in all directions. What is the intensity level at 18.00m.
A listener increases his distance from a sound source by a factor of 3.05, what is the change in the sound intensity level in dB
calculate the net percent value of these costs and benefits of an information system. Also calculate the overall return on investment of the project and then percent a break even analysis.
For this purpose you set up a measurement in which a proton and an electron are situated 901 nm from each other and you study the forces that the particles exert on each other.
how much heat transfer is req to raise the temp of a 0.750 kg al pot containing 2.50 kg of water from 30C to the boiling point and then boil away 0.750kg of water
Consider a hypothetical universe in which the electron hasspin 3/2 rather than spin 1/2. Draw n enegy level diagram for the n=3 states of hydrogen,neglecting fine structure and hyperfine strucure. Label the states by the appropriate quantum nubers..
An 8,000 rocket is shot straight up from the Earth's surface with the initial speed of 800 m/s. How high does it go.
A 1200 turn coil of wire that is 3.00 cm in diameter is in a magnetic field that drops from 0.750 T to 0 T in 15.0 ms. What is the induced emf in the coil
a steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200
The sound intensity level of a certain sound source is measured by two listeners located at different positions along a line from the source. What is the power output of the source
q1. a flight attendant pulls her 66 n flight bag a distance of 381 m along a level airport floor at a constant
The Sun radiates energy at a rate of about 4×1026W. At what rate is the Sun's mass decreasing
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