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ioda
4 years ago
9

How does paving parking lots and roads with concrete or asphalt affect surface water and groundwater?

Physics
1 answer:
lidiya [134]4 years ago
7 0
Parking lots with roads and concrete reduce infiltration. Infiltration is the process by which water penetrates the soil. Reducing the amount of water that enters the soil can eventually impact groundwater levels in some areas by decreasing it over time. Paved roads lead to increased surface runoff which increases the possibility of flooding in periods of heavy rainfall. This is known as urban flooding. 
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If the current flowing through a circuit of constant resistance is doubled, the power dissipated by that circuit will Group of a
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Answer:

P' = 4 P

Therefore, the power dissipated by the circuit will becomes four times of its initial value.

Explanation:

The power dissipation by an electrical circuit is given by the following formula:

Power Dissipation = (Voltage)(Current)

P = VI

but, from Ohm's Law, we know that:

Voltage = (Current)(Resistance)

V = IR

Substituting this in formula of power:

P = (IR)(I)

P = I²R   ---------------- equation 1

Now, if we double the current , then the power dissipated by that circuit will be:

P' = I'²R

where,

I' = 2 I

Therefore,

P' = (2 I)²R

P' = 4 I²R

using equation 1

<u>P' = 4 P</u>

<u>Therefore, the power dissipated by the circuit will becomes four times of its initial value.</u>

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