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Triss [41]
3 years ago
6

Which of these is not an example of a physical change?

Physics
2 answers:
horsena [70]3 years ago
5 0
A. a nail rusting is not a physical change its a chemical change
amm18123 years ago
3 0
A nail rusting is an example of chemical change as the iron is oxidized to become rust. This is not a physical change.
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A distorted 1kHz sine wave is represented by the equation: LaTeX: v(t) = 5sin(2 \pi 1000t) + 0.05sin(2 \pi 3000t)v ( t ) = 5 s i
vovikov84 [41]

Answer:

As given in the problem statement

frequency=1 KHz=1*10^3 Hz

V(t) is represented as

v(t) = 5sin(2 \pi 1000t) + 0.05sin(2 \pi 3000t)

v ( t ) = 5 s i n ( 2 π 1000 t ) + 0.05 s i n ( 2 π 3000 t )

Total harmonic distortion will be 234 Pi

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Kepler’s first law states that:
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suppose that during any period of 1/4 second there is one instant at which the crests or troughs of component waves are exactly
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3 years ago
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Which substance cannot be seperated physically or chemically?
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Answer:

What is a Pure Substance?

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4 0
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In Part 6.2.2, you will determine the wavelength of the laser by shining the laser beam on a "diffraction grating", a set of reg
harkovskaia [24]

Answer:

λ = 2042 nm

Explanation:

given data

screen distance d = 11 m

spot s = 4.5 cm = 4.5 ×10^{-2} m

separation L = 0.5 mm = 0.5 ×10^{-3} m

to find out

what is λ

solution

we will find first angle between first max and central bright

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tan θ = 4.5 ×10^{-2}  / 11

θ = 0.234

and we know diffraction grating for max

L sinθ  = mλ

here we know m = 1  so put all value and find λ

L sinθ  = mλ

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λ = 2042.02 ×10^{-9}  m

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3 0
3 years ago
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