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Q. A thin soap film (n = 1.33) has a uniform thickness. When white light strikes the film at normal incidence, blue light (b = 440 nm) is constructively reflected. At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Assume the film has the minimum thickness that can produce these reflections.
Q. In a system with two moving objects, when a collision occurs between the objects:
a. the total kinetic energy is always concervedb. the total momentum is always conservedc. the total kinetic energy and total momentum are always conservedd. neither the kinetic energy nor the momentum is conserved
What is water speed along the boat during the vertical cross
A good baseball pitcher can throw a baseball toward home plate at 91 miles per hour with a spin of 1789 revolutions per minute. How many revolutions does baseball make on its way to home plate? For simplicity, assume that the 60.0 ft path is a straig..
Get the expression for how moving clocks run slowly when seen by observers at rest.
How long can craft hover over the moon surface Contract between Einstein's calculations and observed precession
A stone is projected at a cliff of height h with an initial speed of 45.0 m/s directed at an angle θ0 = 66.0° above the horizontal. The stone strikes at A, 5.37 s after launching. Find out (a) height h of the cliff, (b) speed of the stone just before..
What is wavelength in meters of an electron
From the shape of total energy vs. time plot, what can you conclude about the conservation of mechanical energy in your mass and spring system.
A 71kg pole-vaulter falls from rest from a height of 4.6m onto a foam-rubber pad. The pole-vaulter comes to rest 0.4s after landing on the pad.
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
Two charged pith balls are suspended on very light 10.7 cm strings. Each has a mass 11.0 g. In stability, the total angle between the strings is 37 degrees. Draw the free body diagram for one of the pith balls and clearly label all forces with magnit..
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
The intersection is 15 m wide. Her car's maximum deceleration is -6.8m/s2, whereas it can accelerate from 43km/h to 70km/h in 8.1 s. Overlook length of her car and her reaction time.
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