Physics, 11.12.2019 01:31 daphnevlogs11
To understand the concept of nodes of a standing wave. the nodes of a standing wave are points where the displacement of the wave is zero at all times. nodes are important for matching boundary conditions, for example that the point at which a string is tied to a support has zero displacement at all times (i. e., the point of attachment does not move). consider a standing wave, where y represents the transverse displacement of a string that extends along the x direction. here is a common mathematical form for such a wave:
y(x, t) = acos(x, t)sin(wt)
where a is the maximum transverse displacement of the string (the amplitude of the wave), which is assumed to be nonzero, k is the wavenumber, w is the angular frequency of the wave, and t is time.
at which three points x1, x2 and x3 closest to x=0 but with x> 0, will the displacement of the string be zero for all times? these are the first three nodal points. express the first three nonzero nodal points as multiples of the wavelength lambda, using constants like pie . list the factors that multiply in increasing order, separated by commas.
Answers: 2
Physics, 22.06.2019 19:00
Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.
Answers: 3
Physics, 22.06.2019 19:30
Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
Answers: 1
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
Physics, 23.06.2019 03:20
The motion of water in a dam serves human beings by generating electricity as it is a controlled motion. give one example for an uncontrolled motion. what effects could it cause
Answers: 1
To understand the concept of nodes of a standing wave. the nodes of a standing wave are points where...
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