Answer:
The average current will be "17.69 nA".
Explanation:
The given values are:
Charge,
q = 9.2 pC
Time,
t = 0.52ms
The equivalent circuit of the cell surface is provided by:
⇒ ![i_{avg}=\frac{charge}{t}](https://tex.z-dn.net/?f=i_%7Bavg%7D%3D%5Cfrac%7Bcharge%7D%7Bt%7D)
Or,
⇒ ![i_{avg}=\frac{q}{t}](https://tex.z-dn.net/?f=i_%7Bavg%7D%3D%5Cfrac%7Bq%7D%7Bt%7D)
On substituting the given values, we get
⇒ ![=\frac{9.2\times 10^{-12}}{0.52\times 10^{-3}}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B9.2%5Ctimes%2010%5E%7B-12%7D%7D%7B0.52%5Ctimes%2010%5E%7B-3%7D%7D)
⇒ ![=17.69^{-9}](https://tex.z-dn.net/?f=%3D17.69%5E%7B-9%7D)
⇒ ![=17.69 \ nA](https://tex.z-dn.net/?f=%3D17.69%20%5C%20nA)
Ans: C) Solid
Explanation: We will look into different states
A) Liquid : In liquid state molecules are not very tightly bound to each other. So, they have no fixed shape . They take the shape of container in which they are kept.
B) Gas : In gaseous state molecules are very loosely bound so they have very less intermolecular forces so they have much more freedom of movement.So, it will be also not correct.
D) Plasma : In Plasma state approximately equal amount of positive or negative charges are there, although its a type of hot ionized gaseous state but but due its different properties then other gases it is considered the 'fourth' state. And it also can't maintain it's definite shape and volume.So we will eliminate that also.
C) Solid : Finally we are left with solid state. Here molecules are tightly bound to each other . So, it doesn't change its shape and volume when kept in different container.
So 'Solid' state is the correct choice.
Hope it helps!!!
The answer is C, because there are only so many elements therefor you can have only so many compounds.
The energy of a photon is proportional to the speed of light and inversely proportional to the wavelength. The constant of proportionality is Planck's constant, <span>6.626 * 10^-34 Js</span>
E = hc/ {wavelength}
E = [ 6.626 * 10^-34 Js * 2.997 * 10^8 m/s ] / 0.124 m
E = 1.60 * 10^-24 J