Answer:

Explanation:
Recall that the formula for an inductance (L) for coil on N turns, are A and current I is given by:

Then, for the first coil we have;

and for coil 2 we have:

then, the quotient L1/L2 can be written as:

Answer:
20m/s
Explanation:
Given parameters:
Distance of throw = 50m
Time = 3s
Unknown:
Average speed = ?
Solution:
Average speed is distance divided by time;
Average speed =
Insert the parameters and solve;
Average speed =
= 16.66667m/s = 20m/s
Answer:
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Explanation:
The measuring sensitivity of liquid-in-glass thermometers increases with the amount of liquid in the thermometer. The more liquid there is, the more liquid will expand and rise in the glass tube. For this reason, liquid thermometers have a reservoir to increase the amount of liquid in the thermometer.