# Q&A - Ask Doubts and Get Answers

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1.5 m

Considering Earth's potential as 0 is nothing but an assumption.We assume that Earth  is a collection of infinte negative charge and it can even supply more charges to it.As earth has such a huge amount of negative charge with capacity to be supplied with even more any other body will  be positive w.r.t Earth.Hence we assume its potential to be zero.

Aliter

As Earth can store unlimited charge its capacitance is infinity

Q=CV

=>C=Q/V

As C is infinity V has to be 0.

Hope this solved your query

Regards

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Mass of the gun, M= 100 kg Mass of the shell, m= 0.020 kg Muzzle speed of the shell, v = 80 m/s Recoil speed of the gun = V Both the gun and the shell are at rest initially. Initial momentum of the system = 0 Final momentum of the system = mv - MV Here, the negative sign appears because the directions of the shell and the gun are opposite to each other. According to the law of conservation of...

Carbon Dioxide

Chances should be decent so to check the list of colleges where you can try for admission, you can use below provided college predictor - KCET COLLEGE PREDICTOR
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Coefficient of (r+1)th in the expansion of (1+x)n is nCr Given 2nd, 3rd and 4th terms are in A.P ⇒2.nC2?=nC1?+nC3? ⇒n(n−1)= ⇒6(n−1)=6+n2−3n+2 ⇒n2−9n+14=0 ⇒n=7
Ans=
Every charged particle in the universe creates an electric field in the space surrounding it. This field can be calculated with the help of Coulomb's law. The principle of superposition allows for the combination of two or more electric fields. So The principle of superposition states that every charge in space creates an electric field at point independent of the presence of other charges in...

sister

Amount = Rs.(30000+4347) = Rs.34347 let the time be n years Then,30000(1+7/100)^n = 34347 (107/100)^n = 34347/30000 = 11449/10000 = (107/100)^2
79,331,502
Incomplete question

yeah yes

Given:7g of N2 i.e 0.25 moles 8g of Ar i.e 0.2 moles Total pressure=27bars Explanation: we know that moles=Given mass /molecular mass Now we know that partial pressure is equal to product of moles fraction and total pressure in closed system therefore, mole fraction of Nitrogen gas=0.25/0.45 Now partial pressure=(0.25/0.45)27 =15bars
Fehling's solution is a chemical reagent used to differentiate between water-soluble carbohydrate and ketone functional groups, and as a test for reducing sugars and non-reducing sugars, supplementary to the Tollens' reagent test.
Fehling's solution is a chemical reagent used to differentiate between water-soluble carbohydrate and ketone functional groups, and as a test for reducing sugars and non-reducing sugars, supplementary to the Tollens' reagent test.

Hello

Any even number has a general form of 2x(where x is any positive integer)

Take cube of  the number  that is cube of 2x

=

So 8 multiplied with any number is even

Hence cube of any number is even

So the given statement is true

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