Answer:
v = 44.27 m / s
Explanation:
This is an exercise in kinematics since they ask the maximum speed of the train
v² = v₀² + 2 a x
a train departs with zero initial velocity
v² = 2 a x
v = √ 2ax
calculate
v = √ (2 1.21 810)
v = 44.27 m / s
in this solution we have assumed that the train uses the entire distance with acceleration
A relationship exists and the numbers cause one another can be said about two numbers that have either a positive or negative correlation
Option : C
<u>Explanation:</u>
When two numbers have positive correlation, they move in the same direction. If the first variable increases, the second one also increases and if one variable decreases the other one also decreases.If the two numbers have negative correlation, the two numbers move in opposite directions.
A relationship exists between two numbers and the number cause one another. A correlation means that changing one variable affects the other. Correlation among variables need not necessarily imply causation. Positive correlations are mostly used in Finance and stock markets.
Answer:
1/ K times
Explanation:
The capacitance of a parallel plate capacitor is given by
Where, A be the area of plates and d be the distance between the plates.
When a dielectric is inserted between the plates, the new capacitance is
The charge remains same.
As we know that
q = C V
The capacitance becomes KC so, to keep the charge remains same the potential difference should be 1 / K times.
V' = V / K
It appears to be a <span>spiral shape. </span>