Water droplets of various sizes can be seen on white wave caps. These droplets disperse variously frequency photons. A type of wave whose value only varies in one spatial direction is referred to as a plane wave.
In other words, its value remains unchanged on a plane oriented perpendicular to that direction. A vector of unit length that indicates the direction in which the wave varies can be used to describe plane waves. The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency. The hertz unit is used to measure frequency (Hz).
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a 50-mh inductor is connected across a 10-v rms ac generator, and an rms current of 2.0 ma flows.
The value of the generator frequency of the system will be 15.9 kHz.
Value of the inductor = 50 mh
Voltage = 10 V
As we know,
The value of the frequency can be determined by using the formula:
f = (w/2)*3.14-----(a)
Where, w = wattage (Power)
As wattage can be calculated by using the formula:
w = v*I*L
Where, v = voltage of the system
I = value of the current
L = value of the inductor
So, after putting all the values the expression given in (a) becomes:
f = v/2*3.14*i*L
Now to find the value of the frequency we will put the value of the inductor, current, and voltage given in the question in the above expression.
Thus, we will get it as:
[tex]f = \frac{10}{2}\times 3.14 \times 2\times 10^{-3} \times 50\times 10^{-3}[/tex] = 15.9 kHz
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The complete question should be like:
A 50-mH inductor is connected across a 10-V rms AC generator, and an rms current of 2.0 mA flows. What is the generator frequency?
An oscillator creates periodic waves on two strings made ofthe same material. The tension is the same in both strings.
If the strings have different thicknesses,which of the following parameters, if any, will be different in thetwo strings?
Check all that apply.
wave frequency
wave speed
wavelength
none of the above
If the strings have the same thickness butdifferent lengths, which of the following parameters, if any, willbe different in the two strings?
Check all that apply.
wave frequency
wave speed
wavelength
none of the above
The tension is the same in both strings. If the strings have different thicknesses, then wave frequency is same and rest are different.
In physics, frequency refers to both the quantity of cycles or vibrations that a body experiencing periodic motion experiences in a unit of time as well as the quantity of waves that occur during that same period of time. One cycle or vibration is defined as the passage of a body in periodic motion through a series of actions or positions before returning to its initial state. The frequency is equal to the period's reciprocal, or time interval, so frequency = 1/period = 1. (time interval).
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Find the angle of refraction of a ray of light that enters diamond from water at an angle of 21.2 degrees to the normal
b) draw a diagram that demonstrates your findings
Can anybody please help fast
Answer:
Refractive index for diamond wrt air = 2.42. Refractive index of water wrt air = 1.33. Refractive index of diamond wrt water = Refractive index of diamond wrt air*Refractive index of air wrt water = 2.42*(1/1.33) = 1.82. Critical angle for light passing from diamond into water = arcsin (1/1.82) = 33.33 degrees.