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Laser light of wavelength 632.8 nm falls normally on a slit that is 0.0250 mm wide. The transmitted light is viewed on a distant screen where the intensity at the center of the central bright fringe is 8.50 W/m^{2}.
Find the maximum number of totally dark fringes on the screen, assuming the screen is large enough to show them all.
At what angle does the dark fringe which is most distant from the center occur?
Write down the mathematical relationship between velocity (v) and time (t) for a coin tossed up into the air after it leaves the thrower's hand at t=0 with a velocity of +15.0 m/s. Assume that the positive direction is upward and the acceleration of ..
Consider 1cm³ of liquid nitrogen contained within a 5cm³ sealed container. If the temperature of the container is raised to 293 K and all of the liquid nitrogen were to subsequently evaporate, what would the pressure be within the container?
A skier leaves the starting gate at the top of a ski jump with an initial speed of 4 m/s. the starting position is 120 m higher than the end of the ramp, which is 3 m above the snow. FIND THE FINAL SPEED of the skier if he lands 145 m down the 20 deg..
A cannon with a mass of 115 kg shoots a cannonball with a mass of 8 kg .If the speed of the cannon ball as it leaves the cannon is 185 m/s,what is the speed of the cannon at that time??(assume cannon is initially at rest,not fastened down in any way,..
Two equal objects (of mass m) on effectively frictionless horizontal air track are held between rigid supports by three identical springs (spring constant k) in a set up of one spring attached to each of the supports and one of the masses and the thi..
A thin, cylindrical rod L = 20.6 cm long with a mass m = 1.20 kg has a ball of diameter d = 6.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure be..
If a iron core of a collapsing star initially spins with a rotational frequency of fo=3.4 per second and the core radius decrease during the collapse by a factor of 24. what is the rotational frequency of the iron core at the end of collapse
Differentiate the amplitude of a forced oscillator to find the frequency that yields the maximum amplitude. Under what conditions is the maximum driving amplitude close to the natural frequency?
A pendulum is constructed by attaching a small metal ball to one end of a 1.25 m long string that hangs from the ceiling. the ball is released when it is raised high enough for the string to make an angle of 30.0 degrees with the vertical. how fast i..
A 4.0-kg rock is dropped from a height of 21.0 m. At what height is the rock's kinetic energy twice its potential energy? ?? m A cylinder of gas is at room temperature (20°C). The air conditioner breaks down, and the temperature rises to 49°C. Wha..
A child slides down a snow-covered slope on a sled. At the top of the hill, her mother gives her a push at a speed of 1.5 m/s to get her started. find the angle that the hill makes with the horizontal
How does size effect fluorescence or emission from quantum dots and what you know about single quantum dot experiments for Nitride based quantum dot materials - as outlined in the lectures
A golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. find the speed of the ball just before it lands
Express the velocity of the puck in the unit vector(i,j) notation and in the magnitude and angle notation. Vx = 0.026m/s Vy = 0.053m/s And then find the momentum of the puck
One design challenge for a capacitor-powered electric car is that the voltage would change with time as the capacitors discharge. what fraction of energy would still be left
A count rate meter is used to measure the activity of a given sample. At one instant, the meter shows 4.750 counts/min. Five minutes later, it shows 2700 counts/min.
An unknown resistor is connected between the terminals of a 7.50 V battery. Energy is dissipated in the resistor at the rate of 0.510 W. At what rate is energy now dissipated
How does the magnitude of electrical force between a pair of charged objects change while the objects are moved twice as far apart? Three times as far apart.
In order to fabricate a uniform wire of resistance 1.2 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the diameter of the wire
A resistor of 2 ? and another of 3 ? are connected in parallel, and this combination is joined in series with a 4-? resistor across a battery. what is the potential drop across the 3-? resistor
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
Your new super power Heat-O-Matic insulated blender has both a violent chopping blade and a heating element, what amount of heat flowed into the water from the heating element
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