Welcome to your work , Energy & power - 2
1.
Work done is independent of
2.
If A = 3i + 4j, magnitude of A·A is
4.
Dot product of perpendicular vectors is
5.
If A ⟂ B, then projection of A on B is
6.
Work done can be negative means
7.
Dot product is commutative because
9.
If vectors are parallel, A·B is
10.
Which quantity is defined using scalar product?
11.
If displacement is zero, work done is
12.
Work done by centripetal force is
13.
If force makes obtuse angle with displacement, work is
14.
Work done is zero when force is
16.
If force acts opposite to displacement, work is
18.
Scalar product depends on
19.
Dot product helps find
20.
If A·B = 0, vectors are
22.
Which law dot product does NOT follow?
23.
Angle between vectors if A·B = –AB
24.
Which force does zero work in circular motion?
25.
Work done by force F is maximum when θ is
26.
Scalar product of two vectors A and B is
29.
Dot product of unit vectors i·j equals
30.
If θ = 90°, A·B equals
31.
If A·B = 0, then A and B are
32.
Which law dot product does NOT follow?
33.
Dot product of vector with itself is always
34.
Unit of scalar product of force and displacement is
35.
If vectors are antiparallel, A·B is
36.
Projection of A on B equals
37.
Which quantity uses dot product?
38.
Negative work is done when force is
39.
Work done by force F is maximum when θ is
42.
Work done by friction is usually
44.
Dot product result is
45.
Angle between vectors if A·B = AB
