Answer:
7/ 0.3
10/ 0.35N
I don't know about 8 and 9
sorry for that.
Answer:
3 ohm
Explanation:
Given :
V=9V
And according to given question same current is flowing in both resistance that means resistance will connected in series
So,
R= R+R=2R
Now,
Applying ohm's law
Therefore, answer is 3 ohm
The initial equivalent resistance of the circuit is
which means
Therefore the initial current in the circuit is
When the new resistor of
is added to the circuit in parallel, the new equivalent resistance of the circuit is
from which we find
This means that the equivalent resistance of the circuit has decreased, and the new current is
which means that the current in the circuit has increased.
As per the question the body possesses kinetic energy but the net displacement of the particle is zero.
Before going to explain the type of motion first we have to know the basics of displacement.
The displacement is a vector quantity which has magnitude as well as direction .it is the minimum distance between two points out of all possible paths
Let us consider an example .let a body travels from point A to the point B and again comes to the back to the same point A .here the distance traveled is 2AB but the net displacement is zero.we have to apply this concept to solve this problem.
As the body possesses kinetic energy but the net displacement is zero .
This is in case of an circular motion.in circular motion the body possesses rotational kinetic energy but in every circular rotation ,the net displacement is zero.
One can take an example of oscillatory motion also.here the particle possesses vibrational kinetic energy ,but in each vibration ,the net displacement is zero.