Physics, 01.07.2019 19:30, djcloverman3593

What does frequency describe? a: distance from crest to crest or from trough to trough on a wave b: depth of a wave c: how often the particles of a medium vibrate d: height of a wave

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answered: goldenhawk239

(C). How often the particles of a medium vibrate.

Further explanation

Let us analyze the answer choices one by one.

A: Distance from crest to crest or from trough to trough on a wave.

This statement represents the definition of wavelength. The distance between crest or between trough is the distance of one wave, that is the wavelength.

B: Depth of a wave.

The depth of a wave is the depth of influence of a water wave, which is about half the wavelength.

C: How often the particles of a medium vibrate.

Yes right, this statement describes frequency. The frequency of a wave refers to how often the particles of the medium vibrate when a wave passes through the medium.

D: Height of wave is the distance between two amplitudes.

Recall that the period and the frequency of any wave are inversely related.

$\boxed{ \ T = \frac{1}{f} \ } \rightarrow \boxed{ \ f = \frac{1}{T} \ }$

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Definition:

Amplitude (A) = the maximum displacement from the mean position, in unit of meters (The SI measurement).Period (T) = the time taken for one complete wave (The SI measurement: in second).Frequency (f) = the number of oscillations completed per unit time, or the number of cycles per second (The SI measurement: in Hertz or Hz).Wavelength (λ) = the shortest distance (in meters) along with the wave between two points that are moving exactly in step with one another. In other words, the wavelength is the distance traveled in one wave.Wave speed (v) = the speed (in m/s) at which the wavefronts pass a stationary observer. The speed of the wave is the quotient of wavelength with the period or the product of wavelength with frequency.

$\boxed{ \ v = \frac{\lambda}{T} \ } \ \boxed{ \ v = \lambda f \ }$

Learn moreHow are period and frequency related to each other? linkThe characteristics of electromagnetic waves link Determine the shortest wavelength in electron transition link

answered: Guest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

answered: Guest

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.