Answer:
Part a)
the efficiency will be 100%
Part b)
for above condition internal resistance of the cell must be ZERO
Explanation:
Electric current supplied by the battery is given as
now the total power supplied by the cell is given as
power supplied to external load is given as
Part a)
If output power is adjusted to have maximum value then value of internal resistance must be ZERO
for same condition power given by the cell
so the efficiency will be 100%
Part b)
for above condition internal resistance of the cell must be ZERO
Here's the handy factoid I always carry around in my toolbox:
When the three dimensions of a solid object all change by a factor of ' K ' . . . .
-- the surface area of the object changes by a factor of K²
-- the volume of the object changes by a factor of K³ .
So I guess if the surface area increases by 3, that means each linear dimension increased by √3, and the volume has to increase by (√3)³ .
That's 5.196 times the dog's original volume.
(And so does his weight. The poor thing is staggering around wondering what was in that last bowl of kibble that he inhaled.)
Newton’s 3rd law of motion
Answer:
No. Your friend will not hear the clap when he/she sees it.
Explanation:
It takes time for sound waves to go through a large area. It takes longer if people are in the area rather than it is empty.