Tricks to calculate faster

How mcuh faster than its present rate should the earth rotate about its axis so that the weight of a body at the equator becomes zero? Also calculate the new length of the day. (c ) What would happen if rotation becomes faster ?

Which pathogenic virus would mutate faster, one with DNA or RNA why ?

Which of the following events occur at a faster rate ?

If earth were to rotate faster than its present speed, the weight of an object

Longer the reaction life time, faster is the reaction. T or F

Why is oxygen depletion in eutrophicated water faster at night than during the day?

Two people start jogging at the same point and time but in opposite directions. If the rate of on jogger is 2 mph faster than the other and after 3 hours they are 30 miles apart, what is the rate of the faster jogger?

Assertion :- RNA is not a predominant genetic material. Reason : RNA being unstable, mutate at faster

" Trick to find out Paramagnetic and Diamagnetic species"