<h3><u>Answer;</u></h3>
- Almost all of the energy on Earth comes from the Sun.
- The energy in fossil fuels originally came from the Sun.
- Plants convert the energy of sunlight into chemical energy.
<h3><u>Explanation</u>;</h3>
- <u>Many different forms of energy are used here on surface of the earth, but almost all of them originate from the sun, not just light and heat (thermal) energy.</u>
- <u>Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis.</u> Animals eat plants and use that same chemical energy for all their activities
- Heat energy from the sun causes changing weather patterns that produce wind. Wind turbines then convert wind power into electrical energy.All these conversions to different forms obeys the law of conservation of energy.
- <em><u>Fossil fuels are energy sources that were created over very long periods of time from decayed and fossilized living matter, and energy in these living organisms originally came from the sun.</u></em>
Answer:
Water power, eg tidal and hydroelectricity , is reliable and predictable because of the Moon causing the tides and rainfall filling reservoirs. They can also be used to supply additional demand.
Explanation:
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Answer:
increases by a factor of 4.
Explanation:
The power dissipated through a resistor is I2RI2R
Current=IResistance=RPower=(current)2×(resistance)=I2RIf we double the current, P=(2I)2R=4I2RCurrent=IResistance=RPower=(current)2×(resistance)=I2RIf we double the current, P=(2I)2R=4I2R
Thus, doubling the current increases the power dissipated through a resistor by a factor of four.