Vectors

Please write the working

5 Answers

466

Himanshu Giria ·2013-06-27 09:04:28

of wHAT ????????

283

Sahil Jain ·2013-06-28 06:20:38

283

Sahil Jain ·2013-06-28 06:21:04

996

Swarna Kamal Dhyawala ·2013-06-28 09:59:44

d) 0 since the vector sum of 100 vectors along the radius of a circle seperated by pi/5 each is zero

996

Swarna Kamal Dhyawala ·2013-06-28 10:09:35

We can solve the question like -
two vectors of magnitude r at an angle Î¸
then by cosine rule = √r²+r²- 2.r.r.cosÎ¸
this gives (C) as the answer

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω