Two objects, with different masses, have a gravitational potential energy of 100 J each; they are released from rest and fall to
1 answer:
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Answer:
Efficiency = 80%
Explanation:
Given the following data;
Work output = 240 N
Work Input = 300 N
To find the mechanical efficiency of a machine;
Substituting into the equation, we have;
Efficiency = 80%
Therefore, the mechanical efficiency of the machine is 80 percent.
Answer:
Explanation:
The amplitude of he combined wave is:
A, is the amplitude from the identical harmonic waves
B, is the amplitude of the resultant wave
θ, is the phase, between the waves
The amplitude of the combined wave must be 0.6A:
Answer:
Explanation:
The confidence interval for population mean is given by :-
Given : Sample size :
Sample mean :
Standard deviation :
Significance level :
Critical value :
Now, the 95% confidence interval estimate of the (true, unknown) mean sound intensity of all food processors of this type :-