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Perhaps to confuse a predator, some tropical beetles are colored byoptical interference that is due to scales whose alignment forms adiffraction grating (which scatters light instead of transmitingit). When the incident light rays are perpendicular to the grating,the angle between the first-order maxima (on opposite sides of thezeroth-order maximum) is 43° inlight with a wavelength of 550 nm. What is the grating spacing of the beetle?
Compute the density of entropically raised element of air
A music store has jazz, classical, country-western and rock music albums on tapes and CDs in the following quantities finding the probability.
Coulomb's Law describes the force between two charged objects, What is the magnitude and direction of the electrical force on object 2 due to Object 1
A device used in radiation therapy for cancer contains 0.52 g of cobalt-60 (59.933 819 u). Determine the activity (in Bq) of the radioactive material
How much heat flows from 1.00 kg of water at 42.0°C when it is placed in contact with 1.00 kg of 16°C water in reaching equilibrium
The centers of a 14kg lead ball and a 110g lead ball are separated by 8.0cm. What gravitational force does each exert on the other
A 80 kg block is pulled at a constant speed of 8.3 m/s across a horizontal floor by an applied force of 120 N directed 37° above the horizontal. What is the rate at which the force does work on the block
A mass of .75 kg oscillates on a light spring, and another .75kg oscillates as the bob of a simple penulum in SHM. If the pendulum length is .3m, what whould be the spring constant of the spring if the periods of oscillation are equal?
A watertight car is submerged under water. What force is required to open a door of area 1.25 m2 if the average depth of water at the door is 1.92 m
A gas bubble with an initial volume of 7.00 milliliters rises from a depth of meters. If the temperature does not change, what is its volume, to nearest ml, when it reaches the surface (density of water=1000 kg/m^3)?
Three point charges, A = 1.80 µC, B = 7.50 µC, and C = -3.80 µC, are located at the corners of an equilateral triangle, Find the magnitude (N/C) at point A, and the direction in degrees counterclockwise from the positive x-axis
An unstable atomic nucleus of mass 1.92 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.00 10-27 kg, Find the velocity of the third particle
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