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AveGali [126]
3 years ago
6

How does density of the medium affect the speed of a wave?

Physics
1 answer:
Tems11 [23]3 years ago
8 0

p(density)=m/v

λ(wavelength)=v(speed of a wave)/n (frequency)

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A negative test charge will accelerate toward regions of ________ electric potential and ________ electric potential energy.
dalvyx [7]

Answer: higher and lower

Explanation:

 charge in an electric field will experience a force in the direction of decreasing potential energy. Since the electric potential energy of a negative charge is equal to the charge times the electric potential the direction of decreasing electric potential energy is the direction of increasing electric potential.

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Explain the physical and chemical changes that occur from when you eat food until it is digested.
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e-lub [12.9K]
1. Resonance. Mechanical waves act on or through a medium, these waves can often have frequencies that are synchronized in a way that makes them act on the matter in the medium more "aggressively."
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3 years ago
Which condition is required for Coulomb's law to hold true?
AleksAgata [21]
The correct answer is:
<span>Point charges must be in a vacuum.

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<span>where
</span>\epsilon_0 is the permittivity of free space
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However, this formula is valid only if the charges are in vacuum. If they are in a material medium, the law is modified as follows:
</span>F= \frac{1}{4 \pi \epsilon_0 \epsilon_r} \frac{q_1 q_2}{r^2}
where \epsilon_r is the relative permittivity, which takes into account the dielectric effects of the material.
7 0
2 years ago
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RSB [31]
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Gamma ray waves are shorter than X-rays, but they're not on that list.
4 0
2 years ago
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