1.

A mass having an initial kinetic energy of 40 Jules gets a potential energy of 10 Jules by reaching at a height h. What is the kinetic energy of the mass now?(a) 10 J(b) 20 J(c) 30 J(d) 40 JI got this question in semester exam.The origin of the question is Energy Conservation in section Miscellaneous of Chemical Process Calculation

Answer»

Right choice is (B) 20 J

The explanation is: Law of CONSERVATION of energy STATES that total energy of the UNIVERSE is ALWAYS constant.



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