Answer:
Explanation:
First we must find the real power that is dissipating for each of the two cases, this is achieved by multiplying the nominal power by the efficiency
P=Poη
P=power
Po=nominal power
η=efficiency
POWER NUMBER 1
P1=400*0.89=356W
POWER NUMBER 2
P2=400*0.94=376W
then we find the power change by subtracting both results
ΔP=P2-P1=376-356=20W
always ensure that the efficiency in any system is maximized, because it is always required that the amount of energy delivered by the system is maximum with the same input power.
Answer: Mechanical advantage is the measure of the force amplification achieved by using a tool , mechanical device or machine . The machine preserve the input power and supply trade off force. against movement to obtain a desired amplification in the output force .
Explanation: hope this helps
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. Given- vf-112m/s, d-398m, Vi-0m/s (112 m/s)2 =
(0 m/s)2 + 2*(a)*(398 m)12544 m2/s2 = 0 m2/s2 + (796 m)*a12544 m2/s2 =
(796 m)*a(12544 m2/s2)/(796 m) = aa = 15.8 m/s26.