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Q. A physics professor wants to perform a lecture demonstration of Young's double-slit experiment for her class using the 633-nm light from a He-Ne laser. Because the lecture hall is very large, the interference pattern will be projected on a wall that is 6.0 m from the slits. For easy viewing by all students in the class, the professor wants the distance between m=0 and m=1 maxima to be 35 cm.
What slit separation is required in order to produce the desired interference pattern?
A 56.0 kg ice skater spins about a vertical axis by her body with her arms horizontally outstretched, making 1.50 turns each second. The distance from one hand to the other is 1.5 m . Biometric measurements indicate that each hand typically makes ..
A stone is thrown at a bell with the speed of 20m/s. The stone strikes the bell and the sound is heard 2.60 s after the stone was released. Speed of sound is 342m/s, how far is the boy from bell.
If a 200 lb bungee jumper jumps from a bridge 150 ft and touches the top of the river. If the cord absorbs 14 percent of the energy how far will be man be at the Top of the next bounce from the river bottom.
A radio telescope, whose two antennas are separated by 55 , is designed to get 3.0- radio waves produced by astronomical objects.
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
At a temperature of 5800, hydrogen atoms in the solar atmosphere have typical random speeds of about 12. Assume that spectral-line broadening is simply the result of atoms moving toward us or away from us at this random speed, estimates thermal width..
A horizontal force of 822 N is needed to drag a crate across a horizontal floor with the constant speed. You drag the crate using a rope held at an angle of 34° (from the horizontal).
A random sample of 42 college graduates revealed that they worked the average of 5.5years on the job before being promoted. The population standard deviation was 1.1 years. Using 0.99 degree of confidence, what is the confidence interval for the po..
An electric field of 300 V/m is confined to a circular area d = 11.1 cm in diameter and directed outward perpendicular to the plane of the figure. If the field is increasing at the rate of 22.0 V/m·s, what are direction and magnitude of the magnet..
The displacement of an object moving under uniform acceleration is some function of time and the acceleration. Suppose we write this displacement as s=ka^mt^n, where k is the dimensional constant. Show by dimensional analysis that this expression ..
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
What is fraction of the diameter of the Sun
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