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1. The light of incidents under the angle 60° from vacuum onto transparent medium. The anglr of refraction is 45°. what is the velocity of the light in this medium.
2. Dr broigle wave of electron in hydrogen atom is 0.5 10-10m. Calculate the velocity of electron.
3. The red helium-neon laser light incidents onto the surface of glass. What is the speed in the glass that has an index refraction of 1.50?
a 22.0uc point charge lies at the origin. find the electric field at the point 1.25 m 0.85m . express your answers
n AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Find the average power in Watts delivered to the circuit
two small charges with a mass of 1 gram each are connected by 2 cm long insulating rod of negligible mass. Obtain the moment of inertia around the center of mass
q1. if 730 nm and 675 nm light passes throughout two slits 0.63 mm apart how far apart are the second-order fringes for
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hours to go around the earth. How far above the surface of the earth is this orbit
An elevator is able to raise 9,800 N to a height of 37 m in 12 s, What is the elevator's power output and How much work does the elevator do
An object made of a single atomic element weighs 2.0000 N in air and 1.8965 N when completely submerged in water. What is the chemical symbol of the atomic element
An old fashion record is spinning freely at 78 rpm (revolutions per minute) when another record is dropped (lightly) vertically on it. Now there are two records turning together at 39 rpm, because a. rotational energy is conserved b. vertical motion ..
Yellow-green light(wavelength 550nm) passes through two closely spaced very narrow slits, what is the wavelength for that second source of light.
A hunter wishes to cross a river that is 1.4km wide and flows with a speed of 5km/h parallel to its banks.
q1. two long parallel wires x and y separated by distance of 5 cm in air carry currents of 20 a and 70 a
Where are the majority of older, metal-poor stars found in the Milky Way galaxy? The center of our Milky Way Galaxy can be observed most easilyat which of the following electromagnetic wavelengths? A spiral density wave refers to a region of enhanced..
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