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β-rays emission in radioactive disintegration is always accompanied by the emission of
Two forces of magnitude 3m and 2m respectively have a resultant R. if the first force is doubled, the magnitude of the resultant is doubled.Find the angle betuween forces?
The energy required to be applied to a radioactive nucleus for the emission of a neutron is
Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
3N ও 2N মানের দুইটি বলের লদ্ধি R । প্রথম বলের মান দ্বিগুণ করলে লদ্ধির মানও দ্বিগুণ হয়। বলদ্বয়ের মধ্যবর্তী কোণের মান হবে- (The resultant of two forces 3N and 2N is R. If the first force is doubled then the resultant is also doubled. The angle between the forces is-)
The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then
The resultant of the two forces P & Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than
Their cells have a very well defined nucleus ,in which nuclear material (chromosomes or DNA) is enclosed in double nuclear membrane.