MCQ
Dimensions of stress are
- ✓$\left[ M L ^{-1} T ^{-2}\right]$
- B$\left[ M L T ^{-2}\right]$
- C$\left[ M L ^{2} T ^{-2}\right]$
- D$\left[ M L ^{0} T ^{-2}\right]$
$=\frac{M^{1} L^{1} T^{-2}}{L^{2}}$
stress $= M ^{1} L ^{-1} T ^{-2}$
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${y}_{1}={A}_{1} \sin {k}({x}-v {t}), {y}_{2}={A}_{2} \sin {k}\left({x}-{vt}+{x}_{0}\right) .$ Given amplitudes ${A}_{1}=12\, {mm}$ and ${A}_{2}=5\, {mm}$ ${x}_{0}=3.5\, {cm}$ and wave number ${k}=6.28\, {cm}^{-1}$. The amplitude of resulting wave will be $......\,{mm}$
(Take $\mathrm{g}=10\; \mathrm{ms}^{-2}$ at the north pole and the radius of the earth $=6400\; \mathrm{km}$)