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Please can you help me to solve these questions?
Que 1.A bacterial culture is known to grow at a rate proportional to the amount present after one hour is 1000 strands of the bacteria are observed in the culture and after 4hrs,3000 strands.
Find:
a.An expression for the approximate number of strands of the bacterial present in the culture at anytime (T) .
b.The approximate number of strands originally in the culture.
Que 2.A certain radioactive material is known to decay at rate proportional to the amount present.If initially theres 50mg of the material present and after 2hrs it is observed that the material has lost 10 percent of its original mass find:
a.An expression for the the mass of the material remaining at anytime (T).
b.the mass of the material after 4hrs.
c.the time at which the material has has decayed to one half of its initial mass
Thanks,hoping to hear from you soon.
From Nana,Ghana.
Pages: 1