Question

Fill ups.(i) 3.0m/s2 = --------------------- km/hr2(ii) 6.67 10-11Nm2/kg2 = ------------------------- g-1cm3s-2CLASS - XI PHYSICS (Physical World & Measurement)

Answer 1

$(i) 3\ m/s^2=3 \times \frac{1m}{1s^2} =3 \times \frac{1}{1000}km \times \frac{3600^2}{1\ hr^2} =38880\ km/hr^2$

$(ii)6.67 \times 10^{-11} Nm^2/kg^2=6.67 \times 10^{-11} m^3/kg.s^2\\ \\ =6.67 \times 10^{-11} \times 1m^3 \times \frac{1}{1 kg} \times \frac{1}{1 s^2}\\ \\ =6.67 \times 10^{-11} \times (100cm)^3 \times \frac{1}{1000g} \times \frac{1}{1 s^2}\\ \\ =6.67 \times 10^{-11} \times 10^6cm^3 \times 10^{-3}g^{-1}} \times s^{-2}}\\ \\ =6.67 \times 10^{-11} \times 10^3\ cm^3 g^{-1}} s^{-2}}\\ \\ =6.67 \times 10^{-8}\ cm^3 g^{-1}} s^{-2}}$

Answer 2

Answer:

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