Answer:
Below
Explanation:
● What makes conductors special is that they have some free electrons that can move.
● An insulator has no free electrons wich explains why current isn't transmitted through it.
Point charge q1 of 30 nC is separated by 50 cm from point charge q2 of -45 nC. As shown in the diagram, point a is located 30 cm
from q1 and 20 cm q2. What are the magnitude and direction of the electric field at point a? Let the electrostatic constant k= 8.99 x 10^9 N x m^2/C^2
1 answer:
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Answer:
The correct option is C
Explanation:
From the question we are told that
The initial speed of the rocket is
The speed of the rocket engine sound is
The final speed of the rocket is
The speed of the sound at would still remain V this because the speed of sound wave is constant and is not dependent on the speed of the observer(The mountain ) or the speed of the source (The rocket ).
A clear example when lightning strikes you will first see (that is because it travels at the speed of light which is greater than the speed of sound) but it would take some time before you hear the sound of the lightning
Here we see that the speed of the lightning(speed of sound) does not affect the speed of the sound it generates