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Visble light of wavelength 542.6 nm is incident on a diffraction grating with d= 3,989 nm. At what angle, in degrees, with respect to the central maximum is the 2 order maximum observed? Please round your answer to one decimal places.
Two rocket ships approach Earth from opposite directions, each with a speed of 0.8 c relative to Earth. What is the speed of one ship relative to the other?
.at what speed was the wheel rotating when the first eclipse of the image occured? take the speed of light =3*10^8 m/s
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
The length of a simple pendulum is 0.67m, the pendulum bob has a mass of 295g, and it is released at an angle of 12 degrees to the vertical. With what frequency does it oscillate
A disk of radius R = 9 cm is pulled along a friction less surface with a force of F = 15 N by a string wrapped around the edge. At the instant when d = 28 cm of string has unwound off the disk, what is torque exerted about the center of the disk.
A new fabric is made to help athletes stay cool. It has a conductivity constant of 898.785 J/(s m K). what is the power of the materials thermal conductivity
A 67? resistor, an 9.0?F capacitor, and a 36mHinductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
The shaft-disk-belt arrangement shown is used to transmit 2.4 kW from point A to point D. Knowing that the maximum allowable couples that can be applied to shafts AB and CD are 25 N . m and 80 N . m, respectively, determine the required minimum sp..
A body of mass M is at rest. It suddenly explodes into three pieces. One mass is .25M, moves due east at 12m/s. Find the velocity of the remianing piece
The rms speed of a sample of gas is increased by 3 percent. What is the percent change in the pressure of the gas
A concave makeup mirror is designed so the virtual image it produces is three times the size of the object, What is the radius of curvature of the mirror
A 2kg piece of ice @ 0C (273K) is placed in 27C (300k) body of water. Latent heat of fusion is 334kJ/kg. What is the work done by the ice
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