First of all, I is proportional V according to the Ohm's Law. R is merely a constant you need to obtain an equation. However, it is true that R changes with temperature and pressure, therefore Ohm's Law is only applicable in an invariable environment. Also this constant R is different for different materials.
So, do not get confused.
Ohm's law is not a universal law, please remember that as well. Some materials do not follow it and we call them non-ohmic conductors. I hope I helped! ^-^
Answer:
C. Using a model is less hazardous than studying the volcano close-up
Answer:
effective dose is 1.2 mrem
Explanation:
given data
mass m = 70 kg
absorb n = 4.5 × 
energy = 1.2 MeV
neutrons = 10
to find out
equivalent dosage
solution
we know here total energy in a day is
total energy = 4.5 × × 1.2
total energy = 5.4 × 
eV
and total energy = 5.4 × × 1.6 × 
so total energy = 8.64 × 
J
and for mass 70 kg
it will be = 8.64 × / 70
= 1.23 × 
rad
so
effective dose is here = 1.23 × × 10 = 0.0012 rem
so effective dose is 1.2 mrem
C. Figure 11 and figure 1v are both compounds
A ) decrease.
B ) increase.
C ) increase, then decrease.
D ) not change.
The answer is A) decrease
Take pushing a box, for example-- You push your hardest then give out, still trying to push the box. You are doing less work than what you have started with!
( Mind marking me for branliest? ; ) )
