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Stolb23 [73]
3 years ago
11

Oil _____.

Physics
2 answers:
Ostrovityanka [42]3 years ago
6 0

Answer: The correct answer for the blank is -

must be mined from underground.

Oil is considered as a fossil fuel as it is formed by the dead remains of plants and animals that lived on earth millions of years back.

It is a non renewable source of energy because it can not be replenished readily by natural means and to renew, it would again require millions of years.

Mining of oil is a process of extraction  of fossil fuels from underground, which is based on the digging of underground mining excavations.

Thus, oil must be mined from underground is the right answer.

atroni [7]3 years ago
4 0
Oil <span>must be mined from underground 

Oil is NOT a renewable resource
Oil does NOT release more toxins than coal
Oil also is NOT easily replenished

</span>
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3 years ago
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two resistors of 20 ohm each are connected in a parallel with a battery of 10V. The total current passing through circuit is
Varvara68 [4.7K]

Answer:

1 Ampere.

Explanation:

From the question given above, the following data were obtained:

Resistor 1 (R₁) = 20 ohm

Resistor (R₂) = 20 ohm

Voltage (V) = 10 V

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Next, we shall determine the equivalent resistance in the circuit. This can be obtained as follow:

Resistor 1 (R₁) = 20 ohm

Resistor (R₂) = 20 ohm

Equivalent Resistance (R) =?

Since the resistors are in parallel connection, the equivalent resistance can be obtained as follow:

R = (R₁ × R₂) / (R₁ + R₂)

R = (20 × 20) / (20 + 20)

R = 400 / 40

R = 10 ohm

Finally, we shall determine the total current in the circuit. This can be obtained as illustrated below:

Voltage (V) = 10 V

Equivalent Resistance (R) = 10 ohm

Current (I) =?

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Divide both side by 10

I = 10 / 10

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Therefore, the total current in the circuit is 1 Ampere.

3 0
2 years ago
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Ket [755]
Friction is causing the skateboard to stop rolling.
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Yes, N2 is a triple bond.
Hope it helps!
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