System cannot posses mechanical energy but posses work. Correct this statement for TRUE.

Correct the sentence : "System cannot posses mechanical energy but posses work".

Does any system posses heat energy ?

Is it possible to convert internal energy into work or mechanical energy ?

Two satellites of same mass m are revolving round of earth (mass M) in the same orbit of radius r. Rotational directions of the two are opposite therefore, they can collide. Total mechanical energy of the system (both satallites and earths) is (m lt lt M) :-

The potential energy of a system increase if work is done ……….

Assertion :- The mechanical energy of earth-moon system remains same when a another heavenly body passes nearby the earth - moon system. Reason :- Force exerted by heavenly body on the earth - moon system is non - conservative.

Potential energy curve U of a particle as function of the position of a particle is shown. The particle has total mechanical energy E of 3.0 joules. Then select correct alternative.

The excess energy which a molecule must posses to become active is known as

If DeltaU and DeltaW represent the increase in internal energy and work done by the system respectively in a thermodynamical process which of the following is true?