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In a Young's double-slit experiment, two rays of monochromatic light emerge from the slits and meet at a point on a distant screen, as in the drawing. The point on the screen where these two rays meet is the 7th-order bright fringe. The difference in the distances that the two rays travel is 4.48 x 10-6 m. What is the wavelength (in nm) of the monochromatic light?
At the bottom of the sea a small hole developed at the body of a submarine. at what speed the water is entering into submarine
An outboard motor for a boat is cooled by lake water at 14.7°C and has a compression ratio of 14.9. Assume that the air is a diatomic gas. Calculate the efficiency of the engine's Otto cycle
The nucleus of an atom has a radius of about 6.8×10-15 m. The electron is normally at a distance of about 1.3×10-11 m from the nucleus. find the volume of the atom
A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the average speed for the whole trip.
A small metal bead, labelled A, has a charge of 29 nC. It is touched to metal bead B, initially neutral, so that the two beads share the 29 nC charge, but not of necessity evenly. When the two beads are then placed 5.0 {rm cm} apart, the force betwee..
while the surface temperature can reach 320K. These data imply that Venus has a "thicker" atmosphere at its surface than does the earth that means that the number of molecules per unit volume (N/V) is greater on the surface of Venus than on the ea..
What is the sound intensity level. One on an Incline--One Hanging A block of mass mA = 4.50 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, frictionless pulley to the second block of mass mB = 2.80 kg ha..
The figure shows two 22.7 kg ice luges that are at rest and placed a short distance apart, one directly behind the other. What are the final speeds of the first luge
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. what difference would it make to his balance
A vertical scale on a spring balance reads from 0 to 185N . The scale has a length of 13.0cm from the 0 to 185N reading. what is the mass of the fish
The vertical deflecting plates of a typical classroom are a pair of parallel square metal plates carrying equal but opposite charges. how fast is it moving when it reaches the postive plate
Assume the steel in the body of an automobile has an emissivity of 0.3 and a specific heat of 450 J/Kg-degree C. What temperature will the top of the hood reach
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