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A laser beam of wavelength 680 nm shines through a diffraction grating that has 750 lines/mm and observed on a screen 1.4 m behind the grating.
How many bright fringes can be observed on a screen?
What is the distance between the two m=1 fringes?
Calculate, using Newton's law of gravity, the magnitude of the force of attraction between the Earth and a mass of 16.000 kg on the Earth's surface
If 20 m^3 of air held at room temperature and atmospheric pressure expands by .001%, by what factor does the number of accessible states increase?
A 4.0-kg object is attached to a springof spring constant 10 N/m. The object is displaced by 5.0 cm fromthe equilibrium position and let go. What is the frequency of vibration
A refrigerator shelf is an array of parallel wires with uniform spacing of 10.50 cm between centers. Find the number of diffracted beams leaving the other side of the shelf
two infinite, parallel planes have excess charge densitites o and -2o, what are the magnitude and direction of the electic field between the planes
A portable electric heater is powered by a 45 V battery. Ithas four identical heating elements inside, wired in series. If acurrent of 14 A runs through them when the heateris turned on, what is the resistance of each heating element?
A platinum resistance thermometer has resistances of 210 Ω when located in a 0oC ice bath and 240.8 Ω when immersed in a crucible containing a melting substance. Find what is the melting point of this substance
A 0.800 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1875 J and at its highest point is 211.2 m above the launch point. find the vertical component of its velocity just after launch
a two forces are given as a 2n and b 3n. the angle between the two forces 110 degrees. find the magnitude of the
A 83-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.93 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1...
A car in an amusement park roller coaster ride rolls without friction at the top of a hill. The car begins at a height h from the top of a hill. what is the magnitude of the car\'s tangential acceleration
Their masses and initial velocities are the same as in that problem. Find their common final velocity. Compare the initial and final kinetic energies.
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