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Q1. What is the width of a slit for which the distance between two first order minima is 1 cm? The slit is illuminated by a helium neon laser(wavelength=700nm). The distance between the slit and viewing screen is 4m.
Q2. A laser beam with wavelength 500nm is incident on two slits 0.1 mm apart. The interferance pattern is observed on a screen 1 m away from the plane of the slits. Determine the number of maxima on the screen within an interval 9.5mm.
The intensity in normal conversation, when about50 cm from the speaker, Estimate the power output of sound from a person speaking in normal conversation
Though slow on land, the leatherback turtle holds record for the fastest water speed of any reptile: 9.78 m/s. It is also among the largest of reptiles. Assume the largest leatherback yet discovered were to swim at the top leatherback speed. If its k..
A 6 N force acts on a 0.3-kg object for 0.3 seconds. By how much does the object's momentum change (in kg-m/s)
A person throws a rock straight up into the air. At the moment itleaves the person's hand it is going 33mph. When the rock reaches its peak, how fast is it going and whatis the magnitude and direction of its acceleration?
A frictionless pulley has the shape of a uniform solid disk of mass 2.80kg and radius 10 cm. What percent of the total kinetic energy does the pulley have
o skydivers are holding on to each other while falling straight down at a common terminal speed of 57.1 m/s. compute the change in kinetic energy of the system
Sometimes mirages are formed when light reflects from of a warm layer of air near a hot surface (like a road). what is the index of refraction of the hot air
q1. dennis driving his 600 kg car makes a 90 degree turn. his speed before the turn is 15.0 ms and after the turn are
A bolt is dropped from a bridge under construction, falling 94 mto the valley below the bridge. (a) In how much time does it passthrough the last 28% of its fall? What is its speed (b) when itbegins that last 28% of its fall and (c) when it reaches t..
A uniform 3.0-m plank weighing 150 N is suspended by vertical ropes at either end. determine the tension in the rope holding the left end of the plank
A hydroelectric power plant is situated at the base of a large dam. Water flows into the intake near the bottom of the reservoir at a depth of 100.2 m, Estimate the maximum possible peak current that a single generator can supply
in exploring the doppler effect we learned that sound from approaching or receding sources can seem higher or lower in
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