we know that
Power efficiency is defined as the ratio of the output power divided by the input power:
so
in this problem
Substitute in the formula above
%
therefore
the answer is
the efficient is 
%
Answer:
Explanation:
Normal length of spring = 28.3 cm
stretched length of spring = 38.2 cm
length of extension = 38.2 - 28.3 = 9.9 cm
= 9.9 x 10⁻² m
force applied to stretch = .55 x 9.8 ( mg )
= 5.39 N
Force constant = force applied / extension
= 5.39 / 9.9 x 10⁻²
= .5444 x 10² N /m
= 54.44 N/m
She did not have a control group, and she did not expose all three samples to wind. Because her hypothesis was a combination of things, she needed to test the different combinations.
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Answer:
Schiff by chili I hoop hookup
The answer is true not false if the ear gets infection it makes more wax so the infection will clear out of the ear
