Angular momemtum : mass * tangential speed * distance to the center = 50*2.1*3.6=37800 J.s
Answer:
yes you are totally right
4. a poor insulator
If rest other things are kept constant or unchanged then a good conductor can be termed as a poor insulator.
The can be found elsewhere and as follows:
<span>A. of magnetic effects.
B. the ball tries to pull the rod’s electrons over to it.
C. the rod polarizes the metal.
D. the rod and the ball have opposite charges.
</span><span>
I believe the correct answer is option C. If a negatively charged rod is held near a neutral metal ball, the ball is attracted to the rod. this happens because </span>the rod polarizes the metal. Hope this answers the question.