Seawater contains 3 mg of uranium per cubic meter. (a) Given that the average ocean depth is about 4 km and water covers two-thirds of Earth’s surface, estimate the amount of uranium dissolved in the ocean. (b) Estimate how long this uranium could supply the world’s energy needs at the current usage of 1.5 × 1013 J/s. (c) Where does the dissolved uranium come from? Is it a renewable energy source? Can uranium from the ocean satisfy our energy requirements? Discuss. Note: Breeder reactors increase the efficiency of nuclear fuel use by approximately two orders of magnitude.

The intensity of radioactivity depends on the distance of the recipient from the source of radiation and follows an inverse square law. Suppose an object receives 1230 millirem of radiation when it is 10 meters from the source, calculate the distance if the object is now exposed to 350 millirem.

A certain radioactive material decays exponentially. The percent, P, of the material left after t years is given by P(t) = 100(1.2). a. Determine the half-life of the substance. b. How fast is the substance decaying at the point where the half-life is reached? The substance is decaying at a rate of about -3.8% per year at the time 9.12 years where the half-life is reached The substance is decaying at a rate of about -9.12% per year at the time 6.8 years where the half-life is reached The substance is decaying at a rate of about -9.12% per year at the time 3.8 years where the half-life is reached | None of the above

Question A8 Sketch a diagram indicating the s-process path from 131 Xe to 140 Ce. Specify the type of each process (i.e. neutron capture, electron capture, beta decays) in the path.

A radioactive element has a half-life of 3 days. The initial amount of that element is 1024 grams. How many grams of that element are left 12 days later? Write down your answer as an integer value (no decimals) and do not write the unit.

Uranium (protons = 92, neutrons = 146, atomic mass = 238.050788 u) decays via alpha decay to Thorium (protons = 90, neutrons = 144, atomic mass = 234.043601 u). What is the kinetic energy of the emitted alpha particle? (Hint: Any energy that is not locked up in rest energy of the product nuclei will go to kinetic energy in the alpha particle.) (Hint: the answer is 4.27 MeV)

B please, help

The efficiency of a nuclear power plant is 36.1.0 %. If 280.16.0 kW of power are produced by the nuclear fission, what is the electric power output of the plant? Please give your answer in kilowatts with one decimal place.

Explain the benefits and hazards of using fusion versus fission reactors as a source of alternative energy.

Thinking Nuclear Power is a perfect example of exponential relations. Canada produces over half of its electricity using nuclear reactors. One of the major problems associated with nuclear power generation is the radioactive waste. Currently all nuclear waste is stored on site at the power plant and there is no solution for the long term waste. After completing this Grade 11 Functions and Applications course, you have been put in charge of Energy Production in Canada. A) What would you do with the long term waste? B) How would you take care of Canada's energy needs for the future?