Answer:
Reactance
Explanation:
In an AC circuit, the capacitive reactance of a capacitor is given by:
where
f is the frequency of the AC current
C is the capacitance of the capacitor
The reactance of the capacitor tells somehow the "resistance" of the capacitor to the passage of current through it. In fact:
- When the frequency of the AC current is zero (this means, we are in regime of DC current), the reactance becomes infinite, and this is true because the capacitor does not let the current pass through it)
- When the frequency of the AC current tends to infinite, the reactance becomes zero, and this is true because in this case the current changes direction so fast that the capacitor has not enough time to "block" the current, so the current almost no feels the presence of the capacitor.
Answer:
See explanation
Explanation:
A change in momentum occurs when a force is applied to an object and changes its velocity.
5). D
The bolt of lightning is a stream of electrons flowing from
a negative to a positive part of a cloud, or either up or down
between a charged cloud and the ground.
6). D
Answer: 78 metres
Explanation:
The average velocity of the bus refers to the rate of change of its distanced travelled in the westward direction per unit time.
Thus, Velocity V = Distance travelled (D)/ time taken (T)
Then, average velocity = 52 metres per hour (mph)
Time taken = 1.5 hour
To get the distance travelled (D), make it the subject formula
D = V x T
D = velocity x time taken
D = 52 mph x 1.5 hour
D = 78 metres
Thus, the bus traveled a distance of 78 metres between the two cities.
s the following graph a bipartite graph or not, and why?
