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Two polarizers are oriented at 38 degrees to one another. Light polarized at a 19 degree angle to each polarizer passes during both. What percent reduction in intensity takes place?
two metal spheres each of radius 4.0 cm have a center-to-center separation of 4.00 m. sphere 1 has charge 2.30 10-8 c.
Two wheels have the same mass and radius of 5.0 kg and 0.38 m,respectively. One has (a) the shape of a hoop andthe other (b) the shape of a solid disk. Thewheels start from rest and have a constant angular accelerationwith respect to a rotational axi..
when a person visits the local tanning salon they absorb photons of ultraviolet light uv to get the desired tan. what
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
We all sound like great singers in the shower, due to standing waves. What are the wavelengths of the first two overtones for this shower
A laser beam with wavelength Lambda= 6328 Å is incident normal to the plane of a diffraction grating. find the distance between the two first- order maxima in the pattern
A ball rolls off a table with a horizontal velocity of 5 m/s If it takes 0.6 secs for it to reach the floor, What is the verticle componet of the balls velocity just before it hits the floor
An electron enters a region of space containing a uniform 0.0000125-T magnetic field. Its speed is 195 m/s and it enters perpendicularly to the field. Find the radius of the electron\'s orbit
Two small charges with a mass of 1.0 g each are connected by a 2.0 cm long insulating rod of negligible mass. Calculate the magnitude of the torque exerted on the rod by the electric field
A wire of thickness d = 1.9 mm is tightly wound in a single layer 200 times around a cylindrical core to form a solenoid (no space between its turns). evaluate the magnetic field at the center of the solenoid
Three resistors having resistances of R1 = 1.74? , R2 = 2.57? and R3 = 4.83? respectively, Find the voltage across each resistor
isaac newton having convinced himself erroneously as it turned out that chromatic aberration was an inherent property
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