Which statement best describes the difference between speed and velocity? A. Velocity is speed with a direction. B. Speed is vel
2 answers:
Explanation:
The total distance travelled by an object divided by total time taken is called the speed of an object. Its formula is given by :
Speed is a scalar quantity. It has only magnitude but no direction.
The total displacement of the particle divided by total time taken is called the velocity of that object. It is given by :
D is the displacement or shortest path covered
Velocity is a vector quantity. It have both magnitude and direction.
Both speed and velocity of an object are same. The only difference is that the speed is a scalar quantity while the velocity is a vector.
The statement that best explains the difference between velocity and speed is (A) i.e. "Velocity is speed with a direction".
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Answer:
E=
Explanation:
We are given that
Charge on ring= Q
Radius of ring=a
We have to find the magnitude of electric filed on the axis at distance a from the ring's center.
We know that the electric field at distance x from the center of ring of radius R is given by
Substitute x=a and R=a
Then, we get
Where K=
Hence, the magnitude of the electric filed due to charged ring on the axis of ring at distance a from the ring's center=