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Measuring distances to high precision is a critical goal in engineering. Numerous devices to exist to perform such measurements, with many involving laser light. Shining light through a double slit will provide such a ruler if (1) the wavelength of the light beam and slit separation is known and (2) the distance the minima/maxima appearing on the screen can be measured. But this in itself requires a physical measurement of distance on the object, which may not be practical. In an effort to create a \"laser-beam ruler\" that does not require placing a physical ruler on the object, you mount a Nd:YAG laser inside a box so that the beam of the laser passes through two slits rigidly attached to the laser. Although 1064 nm is the principal wavelength of a Nd:YAG laser, the laser is also switchable to numerous secondary wavelengths, including 1052 nm, 1075 nm, 1113 nm, and 1319 nm.
Turning on the laser, you shine the beam on an object located nearby and observe the interference pattern with a suitable infrared camera. By switching from a 1052 nm to a 1113 nm beam, you notice that you must move the laser 5.155 cm closer to the object to align the same order maxima and minima with their original locations on the object. How far was the laser originally from the object in meters?* (Assume the small-angle approximation applies.)
A 1000 kg car is moving at a constant speed of 7m/s when it hits the back bumper of another car with 1200 kg of mass moving in the same direction at a constant speed of 6 m/s. what is the combined mass of both cars
In 1993 a giant 400-kg yo-yo with a radius of 1.5 m was dropped from a crane at height of 57 m, estimate its linear speed at the end of the fall
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.75 m/s2 for 4.45 s, With what speed does the car then strike the tree
If a 1.00-kHz sound source moves at a speed of 48 m/s toward a listener who moves at a speed of 29.5 m/s in a direction away from the source, what is the apparent frequency heard by the listener
The two wires of length 2m are 3mm apart and carry a current of 10 A dc. Calculate the force between these wires
A person 1.6 m tall stands 3.0 m from a reflecting globe in a garden. How large is the person's image
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
An illusionist causes a valuable piece of jewelry apparently to disappear by dropping it in a pool of water directly under the center of a circular platform floating on the surface. Find the minimum diameter of the platform that would prevent the ..
To strengthen his arm and chest muscles, an 75.0 kg athlete 2.00 m tall is doing a series of push-ups as shown in the figure below . His center of mass is 1.20 m from the bottom of his feet, and the centers of his palms are 30.0 cm from the top of..
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. What is the height of the arrow once it has travelled the 47.0 m horizontally
Two people, one of mass 75 and the other of mass 65 , sit in a rowboat of mass 89. How far will the boat move
A person can't see objects clearly that are closer than 80 cm. What is the refractive power of the contact lenses wouyld you prescribe
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