`sqrt1620=?`

sqrt(1620)=?

With what least number (integer) the following numbers are to be divided so that they become perfect squares. 1620

Express 1620 in roman numbers.

A radioactive sample consists of two isotopes one of then decays by alpha- emission with a half life of tau_(1)=405s and the other one decays by beta emission with half life of tau_(1) =1620s . At time t=0, probabilities of getting alpha and beta particles from the sample are equal. (a) If a particle coming out of the sample is detected at t=1620s, what is the probability that it is alpha particle? (b) Find the time when total number of surviving nuclei is half the initial quantity. Given If x^(4)+4x-2.5=0 then x=0.59 "log"_(10)2=0.301, "log"_(10)5.9=0.774

If angles A and B satisfy sqrt(2)cosA = cosB + cos^(3)B and sqrt(2)sinA = sinB- sin^(3)B , then the value of 1620 sin^(2) (A-B) is ……………..

If angles A and B satisfy sqrt(2)cosA = cosB + cos^(3)B and sqrt(2)sinA = sinB- sin^(3)B , then the value of 1620 sin^(2) (A-B) is ……………..

If the half life of radium is 1620 years then its decay constant is

If the half life of radium is 1620 years then its decay constant is