Over the last several decades, scientists have addressed the problem of nonrenewable natural resources such as fossil fuels. humans are using fossil fuels at a rapid rate and scientists believe that one day we will run out of them. to solve this problem, research has been conducted on alternative energy sources. one alternative energy source is nuclear energy. although nuclear energy is a good solution to this problem, there are concerns. which of these is not a benefit of nuclear energy? a) fossils fuels are not required b) does not contribute to global warming c) presence of hazardous radioactive materials eliminate d) little carbon emissions released into the air

Option (C)

Explanation:

The nuclear energy is defined as a type of energy which liberates either by the process of nuclear fusion or nuclear fission and is mainly used to generate electricity. This energy is stored in the core of an atom (or nucleus).

It is highly effective, cost-effective and there is no emission of greenhouse gases.

But it also has some disadvantages, of which one is that it produces radioactive waste materials, which are difficult to dispose these substances and is also a very expensive method. These materials emit radiations that are harmful to the organisms. So, it is very challenging to dispose these radioactive waste materials.

Thus, the correct answer is option (C).

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg