Home
Class 11
PHYSICS
If vec(F) = hat(i) + 2hat(j) + hat(k) an...

If `vec(F) = hat(i) + 2hat(j) + hat(k) and vec(V) = 4hat(i) - hat(j) + 7hat(k)` find `vec(F).vec(V)`

A

6W

B

9W

C

13W

D

12W

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise PRACTICE EXERCISE (WORK)|16 Videos

  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise PRACTICE EXERCISE (EMERGY)|31 Videos

  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise EXERCISE - II (PERFECTLY INELASTIC COLLISIONS)|15 Videos

  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 3|61 Videos

Similar Questions

Explore conceptually related problems

If vec(F) = 3hat(i) + 4hat(j) + 5hat(k) and vec(S) = 6hat(i) + 2hat(j) + 5hat(k) , find the work done by the force.

If vec(A) = 7hat(i) + 2hat(j) - 3hat(k) and vec(B) = hat(i) + hat(j) + 2chat(k) are perpendicular vectors, the value of c is

vec(a) = 2hat(i) - hat(j) + hat(k), vec(b) = hat(i) - 3hat(j) - 5hat(k) . Find the vector vec(c ) such that vec(a), vec(b) and vec(c) form the sides of a triangle.

Two vectors are given vec(a) = -2hat(i) + hat(j) - 3hat(k) and vec(b) = 5hat(i) + 3hat(j) - 2hat(k) . If 3hat(a) + 2vec(b) - vec(c) = 0 then third vector vec(c) is