Answer:
28.8 %
Explanation:
The efficiency of an engine is given by:
where
W is the useful work done
is the heat in input
For this machine, we have
W = 15.0 kJ is the work done
is the heat exchausted to the cold reservoir, so the total amount of heat in input is
And so the efficiency is
which corresponds to 28.8 %.
Please post in English so i or someone else can help you.
Answer:
The distance is 6259.31 meters.
Explanation:
We shall use the Reyligh criterion to solve the problem
For diffraction due to circular aperture we have
Assuming that human eye is circular we have
Applying the given values we have
Hi!
Mechanical advantage is defined as the<em> ratio of force produced by an object to the force that is applied to it.</em>
In our case, this would be the ratio of the force applied by the claw hammer on the nail to the force Joel applies to the claw hammer, which is
160:40 or 4:1
So the mechanical advantage of the hammer is four.
Hope this helps!
