Answer:
390W are used to just power the leaf blower.
Explanation:
Therefor less than half its power is being used for it to actually do its job.
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Answer:
The answer is B, The cells have different functions.
Explanation:
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Answer:
A.Bases have a pH lower than 7.
Explanation:
pH, is the degree of acidity or alkalinity of a substance. pH uses a range of numbers from 0 - 14 to indicate the level of how acidic or basic a substance is. Generally, acids are substances that release H+ (hydrogen ions) when dissociated in water while bases are substances that release the OH- (hydroxyl ion) when dissociated.
In the pH scale, below 7 indicates ACIDITY with the lower (<) the value, the higher the acidity while greater (>) than 7 indicates ALKALINITY or BASICITY. Hence, according to this question, it is not to TRUE that "Bases have a pH lower than 7".