X, X+2, X+4 ARE THE 3 POSITIVE CONSECUTIVE INTEGERS.
X(X+2)=8+38(X+4)
X^2+2X=8+38X+152
X^2+2X-38X-8-152=0
X^2-36X-160=0
(X-40)(X+4)=0
X-40=0
X=40 ANSWER FOR THE FIRST INTEGER.
40+2=42 FOR THE SECOND INTEGER.
On calculator it means -
4.6 x
.
We have 4.6 E −7.
We have to determine what it represents on calculator.
<h3>What is Scientific Notation ?</h3>
Scientific notation is a way of writing very large or very small numbers in the powers of 10.
According to the question, we have -
4.6 E−7
On calculator it means -
4.6 x
This is in the form of Scientific Notation.
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1.5 x 10^4 = 15,000
9 x 10^3 = 9,000
15,000 - 9,000 = 6,000 <=== or 6 x 10^3
The surface charge density:
S(igma) = Q / A
A = 1.6 * 10^(-2) * 1.6 * 10^(-2) = 2.56 * 10^(-4) m²
The electric field: E = S / E(psilon) o
E = 0.711 * 10^^(-9) / ( 2.56 * 10 ^(-4) * 8.85 * 10 ^(-12) ) =
= 0.3138 * 10 ^6 = 3.138 * 10^5 V/m
a ) Δ V = E d
Δ V = 3.138 * 10^5 V/m* 1.2 * 10^(-3) m = 376.56 V
b ) When d = 2.40 mm:
Δ V = 3.138 * 10^5 V/m * 2.40 *10^(-3) m = 753.12 V