First learn basic HTML, then CSS and responsive CSS for Static websites and thereafter JavaScript and PHP for dynamic pages. If you also want to learn jQuery for more better works learn it at the same time with JavaScript
- Statement; true
- Statement; false
- Statement; true
- Interrogative sentence; not a statement
- Imperative sentence; not a statement
- Exclamatory sentence; not a statement
The two vectors (say A and B) of different magnitudes cannot be combined to give zero resultant since minimum value of combination is ІA-BІ which is not zero if AB.
The three vectors A, B and C of different magnitudes can be zero such that they form a closed triangle, then,
A+B+C=0
or, C=-(A+B)
Hence, the sum of three vectors may be zero if vector sum of any two vectors is equal and opposite to the third vector.
Note: The vectors can give this result only if...
If a vector A is multiplied by a real number (say n), the vector of same nature is obtained but its magnitude is n times that of A.
