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3 years ago

What is the term for the matter through which a mechanical wave travels?

Physics

1 answer:

pav-90 [236]3 years ago

7 0

The answer is “ The medium”

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Virtue is _______________ between the extremes of vice – excess and deficiency.

mixer [17]

<span>Having high standards and honesty in the behavior is called a virtue and the person is considered virtuous. Usually virtue is mean between two extremes as that mid ground gives a balance to the behavior. Virtues are means between the extremes of vices which are excess and deficiency.</span>

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4 years ago

Hello, can somebody tell me the physical flow quantities besides the 7 basic ones?

baherus [9]

Answer:

There are seven fundamental physical quantities they are: length, mass, time, electric current, temperature, amount of substance, and light intensity.

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3 years ago

When padding a canoe you push the water backwards with the paddle which in turn will push you forward.which law of motion is bei

iogann1982 [59]

Newton's third law: For every action, there is an opposite and equal reaction.

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3 years ago

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A 330-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,110 A. If the conductor is copper

vodka [1.7K]

Answer:

t = 402 years

Explanation:

To find the number of year that electrons take in crossing the complete transmission line, you first calculate the drift speed of the electrons. Then, you use the following formula for the current in a wire:

$I=nqv_dA$ (1)

n: number of mobile charge carrier per volume = 8.50*10^28 e/m^3

q: charge of the electron = 1.6*10^-19 C

vd: drift velocity of electron in the metal = ?

A: cross sectional area of the wire = π r^2 = π (0.02m/2)^2 = 3.1415*10^-4 m^2

I: current in the wire = 1110 A

You solve the equation (1) for vd:

$v_d=\frac{I}{nqA}=\frac{110A}{(8.50*10^{28}m^{-3})(1.6*10^{-19}C)(3.1415*10^{-4}m^2)}\\\\v_d=2.59*10^{-4}m/s$

Next, you calculate the time by using the information about the length of the line transmission:

$x=v_dt\\\\x=330km=330000m\\\\t=\frac{x}{v_d}=\frac{330000m}{2.59*10^{-4}m/s}=1,270,184,865s\\\\1,270,184,865s*\frac{1\ year}{3,156,107}=402.45\ years$

hence, the electrons will take aproximately 402 years in crossing the line of transmission

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3 years ago

What are the two opposite sides of a magnet called?

dexar [7]

The 2 sides of magnet are called the north and south pole

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4 years ago

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