What is the energy equivalent of an object with a mass of 2.5 kg?

2,500g is the answer yes

It is 2.2469E+17 joules = 224.69 petajoules.

Explanation:

Einstein showed that mass (M) and energy (E) are interchange- able: E = Mc2, where c is the speed of light. This implies, for instance, that 1 kilogram of matter is equivalent to an energy E = (1 kg)×(3×108 m/sec)2 = 9×1016 kg m2/sec2. An energy of 1 kg m2/sec2 is known as 1 joule, for short.

unlike poles attract

radiation

explanation:

heat is transmitted by radiation