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In a single-slit diffraction pattern, the central fringe is 420 times as wide as the slit. The screen is 17,000 times farther from the slit than the slit is wide. What is the ratio /W, where is the wavelength of the light shining through the slit and W is the width of the slit? Assume that the angle that locates a dark fringe on the screen is small, so that sin(theta) is approximately equal to tan(theta) .
A 82 kg explorer lands on Planet A, where the gravitational acceleration is 10.5 m/s^2. The radius of the planet is 7.91 x 10^7 m. What is the weight on this planet in Newtons? Express the answer to three significant digits.
question two subway stops are separated by 1100 m. if a subway train accelerates at 1.2ms2 from rest through the first
Estimate the temperature change of the air in 2 h
an iron ball suspended by thread of negligible mass from an upright cylinder that floats partially submerged in water. What is the radius r of the iron ball
If the Young's Modulus of the material is made from is 310 MN/m^2 what is the effective spring constant of the cord for stresses and strains where Young's Modulus is valid
Two springs with spring constants k1 and k2 are put togetherend-to-end. Let x1 be the amount by whichthe rst spring is stretched relative to its equilibrium length, andsimilarly for x2.
A Flywheel (I = 100kg(m2 )) rotating at 500rev/min is brought to rest by friction in 2.0 minutes. What is the frictional torque on the fly wheel
An ionized deuteron (a bound proton-neutron system with a net +e charge) passes through a velocity selector whose perpendicular magnetic Find the speed of the ion
Two girls are sitting on the same side of a see-saw. One girl is 28 kg and sitting 2.4 m away from the middle. The other girl is 35 kg and 2.6 m away from the middle. Their dad can balance them out if he sits 2.0 m away from the middle on the other s..
Find the distance from the positive plate
compute the magnetic field of a torso with 60 turns if the current in each turn has a magnitude of i0.2a at a distance
consider a small object at 3.72cm from the axis of a phonograph turntable that operates at 22.8 revmin .a assuming the
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