Why is a device never 100% efficient? * a) Mechanical Advantage

b) Work

c) Friction

d) Speed Ratio

brainliest for best answer, asap plz
for science lovers!!

The necleus of an atom is made up of what subatomic particles?

Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral

How does the formation of intrusive and extrusive igneous rocks differ?