If nuclear power were banned, we would all die. Attempts to use fossil power would overwhelm the environment, pushing us first into massive global warming, and then into an ice age. The loss of current nuclear power plants would cause war, as people started fighting over what little fossil fuel was left.
Very doubtful, they would be too heavy I think
In terms of fire power that would be the Trident submarine. In terms of propulsion power that would be the Enterlprise, with 8 nuclear reactors.
Well, you don't let them near nuclear reactors, but, if it did happen, they would probably die of radiation. Anyway, not many animals are near nuclear reactors.
I would say the USA as it has more operating power reactors than any other country, but France is also well up there with a greater proportion of electrical power being nuclear, it is though a much smaller country and industrial economy
Yes, Pakistan is a nuclear state, and it is growing its nuclear arsenals day by day.
It's really just a matter of degree, all reactors produce some power. Those used in a power plant will produce perhaps 3000 to 5000 Megawatts thermal. Low power reactors producing a few kilowatts are used for experiments, teaching in universities, and for producing radioisotopes by irradiating samples, but reactors in this sort of power level would not be harnessed to produce electricity, the heat produced if large enough would be removed and rejected to the atmosphere or to a water cooling circuit. This makes them simple to operate and to start and stop as required.
An approximate answer is that at present there are 104 operating reactors, and they produce 19% of the total electricity generation. On that basis, 100% would require 547 reactors. Newer ones would be on the whole of larger capacity so the real answer would be around 500.
11 reactors at present, but see the link below
Nuclear reactors can vary in size depending on their purpose. A typical commercial nuclear reactor used for generating electricity can be around 1,000 megawatts in size, which is enough to power a city of about one million people. Small modular reactors (SMRs) are also being developed that can be much smaller in size, around 50-300 megawatts.
Burning coal, and nuclear reactors using Pu-239
Nuclear fusion combines hydrogen atoms into helium atoms. Hydrogen is available from water and helium is an inert gas. When fusion reactors become technologically feasible, we will greatly reduce consumption of limited fossil fuels and production of greenhouse gases. Fusion reactors will not produce high level nuclear waste.
I don't know the total installed capacity in Australia, but with a population of about 20 million, if we assume 1 kw per person, this gives 20,000 Mw. The largest power reactors are now about 1,500 Mw, so this would need about 13 to 14 reactors. In an all nuclear system though you would need extra plants to cover refuelling outages and unexpected down time due to faults, so I should think about 18 in total. If the installed capacity is different to what I have assumed, adjust accordingly.