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1. The light with the wavelength 500nm propagates through the medium with index of refraction 2.5. Find the speed and the frequency of the light in the medium.
2. A diffraction grating is illuminated with light if wavelength 500nm. It produces the first minimum at 45 degree. Find the number of lines(slits) per mm of diffraction grating.
3. A double spit experiment is performed with light of wavelength 600nm. A very wide viewing screen is 2 m behind the grating. What is the distance between the two m=2 bright fringes on the screen? The slit separation is 0.1 mm.
A ball is thrown toward a cliff of height (h) with a speed of30 m/s and an angle of 60 degrees above the horizontal. What is the ball's impact speed
A 109 V potential difference is applied to a space heater whose resistance is 12 when hot. At what rate is electrical energy transferred to heat
In a thundercloud there may be electric charges of +37.0 C near the top of the cloud and -37.0 C near the bottom of the cloud. What is the electric force on the top charge
One of the most efficient engines ever built is a coal-fired steamturbine in the Ohio valley, driving an electric generator as itoperates between 1870°C and 430°C. What is its maximum theoretical efficiency
The atmospheric pressure at sea level is about 1.0 multiplied by 105 Pa. What is the force at sea level that air exerts on the top of the typical office desk, 159cm long and 86 cm wide?
A 54.6-kg ice skater is moving at 4.08 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. compute the force exerted by the horizontal rope on her arms
A 2590-kg van runs into the back of a 821-kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road is negligible, calculate the initial speed of the van
question1a 1000 kg car carrying four 76 kg people travels over a rough washboard dirt road with corrugations 4.0 m
A standard 35mm slide measures 24mm by 36mm. Suppose aslide projector produces a 60cm by 90cm image of the slide on ascreen. The focal length of the lens is 12cm. What is the distance between the slide and the screen
A roller-coaster car may be represented by a block of mass 50.0kg . The car is released from rest at a height h = 57.0m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 19.0m at ground level, as shown..
suppose you have just discovered a new x-shy-ray binary which contains a b2 main sequence star orbiting an unseen
An electron is observed traveling at a speed of 25.7·106 m/s parallel to an electric field of magnitude 14000 N/C. How far will the electron travel before coming to a stop?
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