Electrical energy is the starting and final energy of a battery
Explanation :
According to astronomers, the whole universe is started with a giant explosion called as Big Bang. Big Bang theory shows that the universe is extended from high density state.
There are some evidence for big bang as :
(1) There are some red shifts of different galaxies which means that the universe is expanding.
(2) Due to the expanding of universe, some of the new elements are created like hydrogen, deuterium etc.
(3) Microwaves are detected by orbiting detectors.
All this parameters shows that big bang theory was correct.
Answer:
C. Pressure gradient equals gas flow over resistance.
Explanation:
As we know that pressure gradient is the driving force for the gas to flow from one point to other point
And we know that the flow rate is directly proportional to the driving force and it inversely depends on the resistance to flow
so we can say
Flow Rate = ![\frac{Driving \: force}{Resistance}](https://tex.z-dn.net/?f=%5Cfrac%7BDriving%20%5C%3A%20force%7D%7BResistance%7D)
Flow Rate = ![\frac{Pressure \: Gradient}{Resistance}](https://tex.z-dn.net/?f=%5Cfrac%7BPressure%20%5C%3A%20Gradient%7D%7BResistance%7D)
so we can say that correct statements are as below
A. Gas flow equals pressure gradient over resistance.
B. Resistance equals pressure gradient over gas flow.
D. The amount of gas flowing in and out of the alveoli is directly proportional to the difference in pressure or pressure gradient between the external atmosphere and the alveoli.