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A glass lens (nglass = 1.52) has a 134 nm thick anti-reflective film (nfilm = 1.39) on one side. Light, moving through the air, is normally incident on the lens passing through the film. What is the largest wavelength of the light that is totally removed by the film?
a proton accelerates from rest in a uniform electric field of 638 nc. at some later time its speed is 1.28 x 106a find
What is the smallest radius of a circle at which a bicyclist can travel if his speed is 9 m/s and the coefficient of static friction between the tires and the road is 0.32, what is the largest angle of inclination
Light traveling in air enters a material at an angle of 25 degrees with respect to the normal. The refracted beam in the material makes an angle of 18 degrees with respect to the normal. Calculate the index of refraction of the material.
A proton and an electron form two corners of an equilateral triangle of side length 1.9 x 10-6 m. What is the magnitude of the net electric field these particles produce at the third corner?
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 129 kg and radius R = 85.3 cm. How long does it take for the flywheel to come to rest
A scooter begins at rest at t0 = 0 seconds. The scooter then accelerates and covers a distance d = 526 m, What is the scooters average speed during this period
A child of mass 24 kg sits 2.10m to the left of the center of a seesaw. The mass of the seesaw is 35 kg. How far to the right of the central pivot must a second child of mass 40 kg sit if the seesaw is to be perfectly balanced.
an air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 4.20 uf. the plate spacing
Estimate the percent change in mass δm/m of a block of copper which is heated from 300 K to 400 K. The molar speci?c heat of copper is cP = 2.6·104 J/kmol·K and, its atomic weight is 29.
Dave pushes his son on a sled across snow. As Dave pushes hisson speeds up. Which statement is true?
Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). Estimate the average bulk modulus of Earth's crust given
Ash "the working bee" decides to gather pollen and in her quest flies 50 meters from a beginning point at 0° along the west and finds nothing. Determine the displacement and direction of the bee
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