Answer:
b) 1.67×10^7 m/s
Explanation:
The solution is attached in the attachment section
Answer:

Explanation:
= Permittivity of free space = 
A = Area = 
d = Thickness = 
k = Dielectric constant = 5.4
V = Voltage = 86.2 mV
Charge is given by

The charge on the outer surface is 
They have thick body coverings
If there are no windows, then the illumination in the room depends
only on the room and what's in it, not on anything outside.
The time of day has no effect. The other things all do.
Answer:


Explanation:
See attachment for complete work.