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half life period of a radioactive element is 140 days. after 560 days 1 g of the element will reduce to ......
A/Ao = (1/2)t/T A is final amount , t is time , & T is half life ... A = Ao(1/2)t/T A = Ao(1/2)560/140 A = Ao(1/2)4 = (1/16)Ao Ao = initial amount = 1g A = 1/16gm = 0.0625gms this is the amount of element after 560 days
A/Ao = (1/2)t/T
A is final amount , t is time , & T is half life ...
A = Ao(1/2)t/T
A = Ao(1/2)560/140
A = Ao(1/2)4 = (1/16)Ao
Ao = initial amount = 1g
A = 1/16gm = 0.0625gms
this is the amount of element after 560 days
A wave undergoes reflection from a rigid boundary. One of its characteristic parameters that changes is(a) frequency(b) phase(c) velocity(d) wavelength
phase
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