Can we associate a vector with

(i) a sphere

(ii) the length of a wire bent into a loop

(iii) a plane area

Clarify for the same.

Asked by Abhisek | 1 year ago |  144

##### Solution :-

(i) We can’t associate the volume of a sphere with a vector, but the area of a sphere can be associated with an area vector.

(ii) We can’t associate the length of a wire bent into a loop with a vector.

(iii) We can associate a plane area with a vector.

Answered by Pragya Singh | 1 year ago

### Related Questions

#### Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by

(a) Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by

$$\theta (t)=tan^{-1}(\dfrac{v_{0y-gt}}{v_{ox}})$$

(b) Shows that the projection angle θ0 for a projectile launched from the origin is given by

$$\theta_{0}=tan^{-1}(\dfrac{4h_{m}}{R})$$

where the symbols have their usual meaning

#### A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of a radius of 80 m

A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of a radius of 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn?

#### A fighter plane flying horizontally at an altitude of 1.5 km with a speed of 720 km/h passes directly

A fighter plane flying horizontally at an altitude of 1.5 km with a speed of 720 km/h passes directly overhead an anti-aircraft gun. At what angle from the vertical should the gun be fired for the shell with muzzle speed 600 m s-1 to hit the plane? At what minimum altitude should the pilot fly the plane to avoid being hit? (Take g = 10 m s-2 ).