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Young's experiment is performed with light of wavelength 502nm from excited helium atoms. Fringes are measured carefully on a screen 1.35m away from the double slit, and the center of the 20th fringe (not counting the central bright fringe) is found to be 10.4mm from the center of the central bright fringe.
What is the separation of the two slits?
A 15 g bullet traveling at 485 m/s strikes a 0.9 kg block of wood that is balanced on a table edge 0.7 m above ground. If the bullet buries itself in the block, find out distance D at which the block hits the floor.
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. after that an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its unique value. What is the final temperature.
A 120-V motor has mechanical power output of 3.00 hp. It is 88.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
What should the charge (sign and magnitude) of a particle of mass 1.47 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
A seagull flies at a velocity of 10.00 m/s straight into the wind, If it takes the bird 18.0 min to travel 6.00 km relative to the earth
A 16.0?m length of wire consists of 7.0m of copper followed by 9.0m of aluminum, both of diameter 1.2mm. What is the voltage across the copper part
It takes a student t = 5.2 s to push a block m = 6 kg at a constant velocity over a distance of d = 4.6 m. How much power was applied to the block in Watts
According to the shop manual, when drilling a 12.1-mm-diameter hole in wood, plastic, or aluminum, a drill should have a speed of 1400 rev/min. find the maximum linear speed of any part of the bit
n = 3.78 mol of Hydrogen gas is initially at T = 366 K temperature and pi = 2.88×105 Pa pressure. How much work did the external force perform
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0. What is the maximum speed of the glider
In a car collision, the driver's body must change speed from a high value to zero. This is true whether or not an airbag is used, How does it reduce injury
An 60 kg skier is sliding down a ski slope at a constant velocity. The slope makes an angle of 5 degrees above the horizontal direction. What is the coefficient of kinetic friction between the skis and the snow
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