Answer:
7.24 ohm
Explanation:
Let R1 and R2 are resistance of two resistors.
Emf=E=20 V
Current,I=2 A
Current,I'=10 A
We have to find the magnitude of the greater of the two resistances.
In series
By using the formula
...(1)
In parallel
Substitute the value
By using quadratic formula
Substitute the value
Hence, the magnitude of the greater of the two resistance=7.24 ohm
Answer:
The change of the momentum of the ball is
Explanation:
We should find (1)with the initial momentum and the final momentum. Linear momentum is defined as , using that on (1):
(2)
It's important to note that momentum and velocity are vectors and direction matters, so if +x direction is the direction towards the wall and the -x direction away the wall and so (2) becomes:
Usually in the deep sea and underwater caves where there is no light
Answer:
The input force that you use on an inclined plane is the force with which you push or pull an object. The output force is the force that you would need to lift the object without the inclined plane. This force is equal to the weight of the object.
Explanation:
You're right, Answer C
The dust and gas accumulate to form a solar nebula, which later on creates the star and the planets.