TS EAMCET · Physics · Work Power Energy
A river of salty water is flowing with a velocity \(2 \mathrm{~m} / \mathrm{s}\). If the density of the water is \(1.2 \mathrm{~g} / \mathrm{cc}\), then the kinetic energy of each cubic metre of water is
- A \(2.4 \mathrm{~J}\)
- B \(24 \mathrm{~J}\)
- C \(2.4 \mathrm{~kJ}\)
- D \(4.8 \mathrm{~kJ}\)
Answer & Solution
Correct Answer
(C) \(2.4 \mathrm{~kJ}\)
Step-by-step Solution
Detailed explanation
Given, velocity of river, \((v)=2 \mathrm{~m} / \mathrm{s}\) Density of water \(\rho=1.2 \mathrm{~g} / \mathrm{cc}\) Mass of each cubic metre \[ m=\frac{1.2 \times 10^{-3}}{\left(10^{-2}\right)^3}=1.2 \times 10^3 \mathrm{~kg} \]…
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