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eshaghi_2006
about E = mc2?
my friend ask : if c tends to one then E= M then what is difference between mass and energy.
8 AnswersPhysics1 decade agophysicists: a quiz?
when we want to weld a machine,for example a grinding machine arc welding, we must disconnect electric power. Why?please explain exactly.
3 AnswersPhysics1 decade agoA quiz : metallurgist?
we have a metal sheet and a hole in the middle of it . if we heat the sheet , the diameter of hole will be greater or smaller?
10 AnswersEngineering1 decade agoplease what is the meaning of turning point?
4 AnswersMythology & Folklore1 decade agothis is a change?
it seems this phrase is a proverb. what is the meaning of it.
4 AnswersMythology & Folklore1 decade agowhy did ussr colapsed.?
3 AnswersSociology1 decade agowhat is the meaning of following phrases..?
the flow of energy in an ecosystem occurs in only one direction. it is always consumed by higher levels of organisms in a food web.
6 AnswersBiology1 decade agowhat is the meaning of mechanical or dynamical phonomenon.?
3 AnswersPhysics1 decade agowhat is difference between pressure and stress.?
6 AnswersPhysics1 decade agowhat is the meaning of correct color.?
at the topic of photoelectric effect
1 AnswerPhysics1 decade agowhat is the meaning of paper electrophoresis.?
3 AnswersPhysics1 decade agowhat is the meaning of gas chromatography.?
1 AnswerPhysics1 decade agowhat is the meaning of radio chromatography.?
2 AnswersPhysics1 decade agowgat is the meaning of paper chromatography.?
9 AnswersChemistry2 decades agowhat is the meaning of tracer elenent.?
5 AnswersChemistry2 decades agohello what is the meaning of sequence in mathmatics.?
3 AnswersMathematics2 decades agowhat isthe meaning of angular momentum of electron.?
3 AnswersChemistry2 decades agoplease what is the meaning of angular momentum of electron.?
3 AnswersChemistry2 decades ago