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Unpolarized light is incident on three polarizers: The first making an angle of 0 degrees with the vertical; the second making an angle of ? degrees with the vertical; and the last one making an angle of 90 degrees with the vertical. If the initial intensity is 1353 W/m2 and the final intensity is 108 W/m2, to the nearest tenth of a degree what is the angle of the middle one?
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
An aluminum wire has a cross-sectional area of 2.70x 10^-6 m^2 and carries a current of 7.50 A. The mass density of aluminum is 2.70 g/cm^3. find the average speed of the electons in the wire.
You are standing on a large sheet of frictionless ice and are holding a large rock. If your mass is 75.0kg and the rock's mass is 14.3kg, what is your speed after you throw the rock
A point on the rim of a 0.55 m diameter grinding wheel changes speed uniformly from 12 m/s to 20 m/s in 8.3 s. What is the average angular acceleration of the wheel
if the maximum height from which a person can jump without a parachute and still survive is 7.50 meters the maximum
A certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20C and its pressure is 1 atm. Calculate the number of grams of oxygen
Calculate the terminal velocity for a pollen grain falling through the air using the drag force equation. Assume the pollen grain has a diameter of 7 µm and a density of 0.7 g/cm3
Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength 1.50 µm. Find the peak magnetic field strength
How long can craft hover over the moon surface Contract between Einstein's calculations and observed precession
A person sees a heavy stone strike the concrete pavement. A, moment later two sounds are heard from the impact: How far away did the impact occur
Find the distance from the mirror to the point where the reflected rays meet.
A handball is projected at an angle of 30 deg with the horizontal from a 20 m tower with an initial vertical velocity of 10 m/sec, find the Resultant velocity at landing
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