Question

Calculate force on an electron in uniform electric field of 5 into 10 to the power 4 newton per coulomb due north

Answer 1

$\mathtt{\huge{ \fbox{Solution :)}}}$

Given ,

Electric field (E) = 5 × (10)^4 N/C

We know that ,

The electrostatic force (f) per unit charge (q) is called electric field (E)

$\large \mathtt{ \fbox{Electric \: field \: (E) = \frac{f}{q} }}$

Thus ,

5 × (10)^4 = (f)/(1.6 × (10)^-19)

f = 5 × (10)^4 × 1.6 × (10)^-19

f = 8 × (10)^-15 N

Hence , the force on an electron in uniform electric field is 8 × (10)^-15 N

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Answer 2

Answer:

The square root of 2, or the (1/2)th power of 2, written in mathematics as √2 or 21⁄2, is the positive algebraic number that, when multiplied by itself, equals the number 2. Technically, it is called the principal square root of 2, to distinguish it from the negative number with the same property.

Geometrically the square root of 2 is the length of a diagonal across a square with sides of one unit of length; this follows the Pythagorean theorem. It was probably the first number known to be irrational.[citation needed]

As a good rational approximation for the square root of two, with a reasonably small denominator, the fraction 99/70 (≈ 1.4142857) is sometimes used.

The sequence A002193 in the OEIS consists of the digits in the decimal expansion of the square root of 2, here truncated to 65 decimal places: