What is a similarity between heat energy and light energy?

Physics

2 answers:

Rudik [331]2 years ago

7 0

Answer: #2 (Heat energy and light energy both can come from the sun.

Explanation:

lesantik [10]2 years ago

5 0

Number two because the sun emits heat in the form of light to earth

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Explain why it is easier to climb a mountain on a zigzag path rather than one straight up the side.

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3 years ago

Explain how you can work out the

Ne4ueva [31]

Answer:

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3 years ago

A power plant produces 1000 MW to supply a city 40 km away. Current flows from the power plant on a single wire of resistance 0.

nikitadnepr [17]

Answer:

Current = 8696 A

Fraction of power lost = $\dfrac{80}{529}$ = 0.151

Explanation:

Electric power is given by

$P=IV$

where I is the current and V is the voltage.

$I=\dfrac{P}{V}$

Using values from the question,

$I=\dfrac{1000\times10^6 \text{ W}}{115\times10^3\text{ V}} = 8696 \text{ A}$

The power loss is given by

$P_\text{loss} = I^2R$

where R is the resistance of the wire. From the question, the wire has a resistance of $0.050\Omega$ per km. Since resistance is proportional to length, the resistance of the wire is