The distance that light travels in one year is approximately 9,460,000,000,000 kilometers. In scientific notation, this would be
2 answers:
Explanation:
A mathematical expression that is used for the representation of a decimal number between 1 to 10 raised to the power of 10. As a result, a scientific notation will be written using less digits.
For example, 9,460,000,000,000 kilometers can be written is scientific notation as follows.
km
So, when we remove the decimal then we get the number which is equal to 9,460,000,000,000.
Therefore, we can conclude that the scientific notation of 9,460,000,000,000 km is km.
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This means to raise the temperature of 1 g of water by 1 degree Celsius we need 4.18 joule of energy.
Now, look at the question. We are asked that how much amount of energy would be required to raise the temperature of 25 g of water by (54-50) = 4 degree celsius.
To do so we have formula
Q = m C (temperature difference)
Have a look at pic for answer