Answer:
The word that refers to the number of wavelengths that pass a fixed point in a second is:
C.) Frequency
Frequency is also known as hertz.
Explanation:
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What function does a generator perform inside a power plant?
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Consult the attached free body diagram.
By Newton's second law, the net force on the crate acting parallel to the surface is
∑ F[para] = (370 N) cos(-20°) - f = 0
(this is the x-component of the resultant force)
where
• (370 N) cos(-20°) = magnitude of the horizontal component of the pushing force
• f = magnitude of kinetic friction
The crate is moving at a constant speed and thus not accelerating, so the crate is in equilibrium.
Solve for f :
f = (370 N) cos(-20°) ≈ 347.686 N
The net force acting perpendicular to the surface is
∑ F[perp] = n - 1480 N - (370 N) sin(-20°) = 0
(this is the y-component of the resultant force)
where
• n = magnitude of normal force
• 1480 N = weight of the crate
• (370 N) sin(-20°) = magnitude of the vertical component of push
The crate doesn't move up or down, so it's also in equilibrium in this direction.
Solve for n :
n = 1480 N + (370 N) sin(-20°) ≈ 1606.55 N ≈ 1610 N
Then the coefficient of kinetic friction is µ such that
f = µn ⇒ µ = f/n ≈ 0.216
The effort distance will be 160 cm.Applying the moment at the center as follows will provide the effort distance:
<h3 /><h3>What is the mechanical advantage?</h3>Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtain the efficiency of forces in levers and pulleys.
Given data;
Effort,
Load,
Distance from the fulcrum,
The effort distance is found by applying the moment at the center as;
Hence, the effort distance will be 160 cm
To learn more about the mechanical advantage refer to the link;
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