The rate of decay of certain substance is directly proportional to the amount present at that instant . Initially there are 27 gm of certain substance and three hours later it is found that 8 gm are left. Find the amount left after one more hour.

The rate of decay of certain substance is directly proportional to the amount present at that instant.Initially,there are 27 gms of certain substance and three hours later it is found that 8 gms are left.Find the amount left after one more hour.

The decay rate of certain substance is directly proportional to the amount present at that instant.Initially there are 27 grams of substance and 3 hours later it is found that 8 grams left.The amount left after one more hour is……….

The rate of increase in the number of bacteria in a certain culture is propotional to the number present at that time. After 2 hours there are 600 bacteria and after 8 hours the count is 75000, then the population will be 200000 after

An ice ball melts at the rate proportional to the amount of ice at any instant. If (2/3)rd quantity melts in 2 hours and if initially quantity of ice is n_0 , find the amount left after 6 hours.

A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there is 50 kg of the material present and after two hours it is observed that the material has lost 10% of its original mass, find () and expression for the mass of the material remaining at any time t, (ii) the mass of the material after four hours and (iii) the time at which the material has decayed to one half of its initial mass.

A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there is 50 kg of the material present and after two hours it is observed that the material has lost 10% of its original mass, find () and expression for the mass of the material remaining at any time t, (ii) the mass of the material after four hours and (iii) the time at which the material has decayed to one half of its initial mass.

A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there is 50 kg of the material present and after two hours it is observed that the material has lost 10% of its original mass, find () and expression for the mass of the material remaining at any time t, (ii) the mass of the material after four hours and (iii) the time at which the material has decayed to one half of its initial mass.

A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there is 50 kg of the material present and after two hours it is observed that the material has lost 10% of its original mass, find () and expression for the mass of the material remaining at any time t, (ii) the mass of the material after four hours and (iii) the time at which the material has decayed to one half of its initial mass.