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Light moving from glass to air changes wavelength from 448.5 nm to 653.7 nm. Find:
(a) the index of reaction of the glass,
(b) speed of light in the glass,
(c) the frequency of the light in this glass, and
(d) the frequency of the light in air?
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. Her dog runs ahead, at twice the speed, reaches the campground and turns around until it meets her again. Then, the dog proce..
A block resting on a smooth surface explodes into three pieces. A 465 gram piece travels at 1.7 m/s, a 1999 gram piece travels 0.7 m/s, calculate the mass and direction of the third piece.
What is the turntable rotation angular velocity
A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. Determine what is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
A 0.100g plastic bead is charged by the addition of 1 x10^10 excess electrons (i.e. so the bead becomes negatively charged). What electric field (magnitude and direction) will cause the bead to hang suspended in the air?
two polarizers are oriented at 72 degress to one another. Unpolarized light falls on them. What fraction of the light intensity is transmitted
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
A person has a near point of NP = 85 cm and a far point of FP = 210 cm. Write a formula for the power, P1, of the upper portion of the bifocals, in terms of the given quantities, that will enable the person to see distant objects clearly
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. When the plane's altitude is 533 m, the pilot releases a package.
A string under a tension of 47.00N is used to whirl a rock in a horizontal circle of radius 2.60 m at a speed of 21.0 m/s. The string is pulled in and the speed of the rock increases.
A hunter aims directly at a target (on the same level) 160 m away, If the bullet leaves the gun at a speed of 260 m/s, by how much will it miss the target
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