a body weighs 25 kg on the surface of the earth. if mass od the earth is 6.0*1024 kg, the radius of the earth is 6.4*106 m and the universal gravitational constant is 6.7*10-11Nm2/kg2, calculate
please help fast!!
what will be the composition of the nucleus of the atom of an element with atomic number 19 and the mass number 39?also write its electronic configuration.
The formula of compounds formed by following ions.
Cr3+ and SO4 2-
Pb2+ and NO31-
what is the formula for retardation
What is the difference between O2 and 2O?
a man carries a suitcase in his hand and climbs up the stairs. the work done by the man is :
d) none of the above
explain also please!
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