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1. The refractive index n of glass depends on the color (wavelength) of the light passing through it. The most common optical glass, Borosilicate BK7, is characterized at wavelength 486.1 nm (blue, designated with letter F) -> nF=1.52238, and at wavelength 656.3 nm (red, designated with letter C) -> nC=1.51432. Two beams (one of each wavelength) are prepared to coincide, and enter the flat polished surface of a BK7 block at angle of 30 arc degree measured from the normal to the surface. What is the angle between the blue beam and the red beam in the glass block?
2. By placing an object in the focal length( between lens and focal point) of a convex lens you get(real/virtual) image that (can/can not) be focussed on a screen. what about a concave lense?
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.80 ? 107 N/m2 and a temperature of 23.0°C. What is the final pressure if one-tenth of the gas escapes
A person scffing her feet on a wool rug on a dry day accumulates a net charge of -95uC. How many excess elecvtrons does she get
A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 80kg. A person pushes on the outer edge of one section with a force of F = 72N that is directed perpendicular to the section. Find out..
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. calculate At what angle is the airplane banked
A 6.0 V battery is connected to a wire made of three segments of different metals connected one after another, Find the potential difference across tungsten wire
Two point charges, +5.0 µC and ?3.0 µC, are separated by 4.0 m. What is the electric potential energy?
An airplane flies at airspeed (speed relative to the air) 112 km/h, In what direction should the pilot head the plane and What would be the ground speed of the plane
A capacitor consists of two closely spaced metal conductors of large area, separated by a thin insulating foil. Calculate the amount of energy stored in the capacitor
A soccer player kicks the ball off the ground at an angle ? above the horizontal. The ball is in the air for 3.0 seconds, Find the soccer ball's initial horizontal (vox) velocity component
The velocity of a ball changes from m/s to m/s in 0.02 s, due to the gravitational attraction of the Earth and to air resistance. What is the rate of change of momentum of the ball
In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37000 km/h. What change in the comet's velocity did this collision produce
A submarine is 309 m horizontally out from the shore and 149 m beneath the surface of the water. find the height of the building
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