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kati45 [8]
3 years ago
13

mini stereo speaker cables are made of copper wire surrounded by robert electricity travel down the copper portion of the cable

while the rubber protects you from being zapped by the electricity which physical property explains the difference in ability of copper and rubber to transmit electricity
Physics
1 answer:
Tom [10]3 years ago
7 0

Here current is flowing through the copper wire so this shows that copper is good conductor of electricity.

It is having less resistance as it conducts the current easily

Now a rubber coating on it will protect us from electric shock

So this property shows that rubber is a bad conductor of electricity

It is having large electrical resistance due to which it will conduct no current

Rubber : - No transmittance of electricity

copper :- good transmittance of electricity

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Sergio039 [100]

Answer:

The net power needed to change the speed of the vehicle is 275,000 W

Explanation:

Given;

mass of the sport vehicle, m = 1600 kg

initial velocity of the vehicle, u = 15 m/s

final velocity of the vehicle, v = 40 m/s

time of motion, t = 4 s

The force needed to change the speed of the sport vehicle;

F = \frac{m(v-u)}{t} \\\\F = \frac{1600(40-15)}{4} \\\\F = 10,000 \ N

The net power needed to change the speed of the vehicle is calculated as;

P_{net} = \frac{1}{2} F[u + v]\\\\P_{net} = \frac{1}{2} \times 10,000[15 + 40]\\\\P_{net} = 275,000 \ W

3 0
3 years ago
6 latter word and it has a s and a I and it has mass (9.______________liquids, and gases all have mass.)
Firdavs [7]

Answer:

Solids

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7 0
2 years ago
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bazaltina [42]

Answer:

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Explanation:

Given parameters:

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Unknown:

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Solution:

The force experienced by the two charges is given by coulombs law. It is mathematically expressed as;

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where k  = 9 x 10⁹Nm²/C²

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Input the variables and solve;

                 

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8 0
3 years ago
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SIZIF [17.4K]

Answer:

Given

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Explanation:

we know

Speed = wavelength * frequency

= 9*3

= 27 m/ s

7 0
4 years ago
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Answer:

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8 0
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