Answer:
Explanation:
The maximum efficient power plant will be the plant based on carnot cycle whose efficiency is given by the following formula
Efficiency = (T₁ - T₂) / T₁
T₁ is temperature of hot reservoir and T₂ is temperature of cold reservoir.
Putting the given values
efficiency of power plant = (35 - 5) / (273 + 35 )
= 30 / 308
= .097
= 9.7 %
Answer:A.
only when a nonzero net force is applied to the object.
Explanation:
Answer:
Electromagnetic radiation
Explanation:
Torque is equal to force times distance. first calculate the weight of the 8-0 kg weight, using the formula:
F = mg
where g is the accelration due to gravity ( 9.81 m/s^2)
F = 8 kg ( 9.81 m / s^2 )
F = 78.48 N
and torque = Fl
where l is the distance
t = (78.48 N ) ( 0.55 m )
t = 43.16 Nm is the torque
The first practical realisation of the metric system came in 1799, during the French Revolution, when the existing system of measures, which had become impractical for trade, was replaced by a decimal system based on the kilogram and the metre.
