Answers: 3
Physics, 22.06.2019 05:40
An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2
Answers: 1
Physics, 22.06.2019 15:00
Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14ΟΟ΅0. d)the ball will oscillate along the z axis between z=d and z=βd in simple harmonic motion. what will be the angular frequency Ο of these oscillations? use the approximation dβͺa to simplify your calculation; that is, assume that d2+a2βa2. express your answer in terms of given charges, dimensions, and constants
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Physics, 22.06.2019 21:30
What ia the energy of an object because of its potential and kinetic energies
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Physics, 22.06.2019 22:00
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
Answers: 3
Water flows at a rate of 30m/s through an opening at the bottom of a tank, in which the water is 4me...
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