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.

Q: Q. 8: K.E. per unit volume is given by 3 2 (a) E=P (b) E=² 3 3 (c) E=mv² (d) None of these…

A: We need to compute- K.E. per unit volume=? The data given as- K.E. of gas molecules.

Q: Nuclear matter is extremely dense. (a) Calculate the density, in kg/m³, of A neutrons in a sphere of…

A: Note: “Since you have posted multiple questions, we will provide the solutiononly to the first…

Q: A vial contains 2000 MBq of Technetium-99m on the 18th June 2014 at 06:00. How much will it contain…

A: The time difference between the activity is Considering that the half-life of Technitium-99m is 6h,…

Q: A film badge worn by a radiologist indicates that she has received an absorbed dose of 3.3 x 10-7…

A: 1 Gy of absorbed radiation means = 1Jole of energy absorbed per 1 Kg  OR  100 erg of energy per…

Q: D. 0.00 MIN A. 0.6 mR/hr B. 3 mR/hr C. 75 mR/hr D. 375 mR/hr 2. If the exposure rate at 10 m from a…

A:

Q: It is thought that there is at least 4*10^7 kg of uranium-235 that could be minded. The energy…

A:

Q: It is estimated that the total explosive yield of all the nuclear bombs in existence currently is…

A: a. the energy of the bombs in kWh is E=4000 MT×4.184×1015 J1 MT×1 kWh3.6×106 J=4.6489×1012 kWh

Q: Nuclear power plants convert the energy released in fission reactions to electric energy. Consider…

A: 1GW = 109 W  1 Mev = 1.6 × 10-13 J   Given efficiency = 41%

Q: Using the ideal gas equation, calculate the density of radon gas at 8.0 K and 9.0 atm, Give your…

A: Given that,Temperature, T=8 KPressure, P=9 atmdensity=?

Q: The hot liquid magma of molten earth was on full display in Mauna Loa as it has been actively…

A: Given:   Potassium-40, uranium-238, and thorium-232 have half-lives of 1.25 billion, 4 billion, and…

Q: The following table shows the percentage of the intensity of radiation that passes through sheets of…

A: ∘Gamma radiation has maximum penetration power.∘beta radiation has moderate penetration power.∘ and…

Q: Which of the following statements is true of nuclear fusion? It generates high-level…

A: Nuclear fusion to light nuclei combine and heavier nuclei this type of reaction known as nuclear…

Q: (a) Use of hydrogen fusion to supply energy is a dream that may be realized in the next century.…

A:

Q: In a naturally occurring sample, 19.8% of boron atoms have 5 neutrons and 80.2% have 6 neutrons.…

A:

Q: If the energy in fusion bombs were used to supply the energy needs of the world, how many of the…

A:

Q: The efficiency of a  nuclear power plant is 39.9.0%. If 312.66.0 kW of power are produced by the…

A:

Q: Sr-90 is a byproduct of nuclear reactions inside nuclear reactor and a has a half-life of 29 years.…

A: Some configurations of protons and neutrons inside a nucleus are unstable. When an atomic nucleus is…

Q: A person on a diet might lose 2.6 kg per week. Express the mass loss rate, as if the dieter could…

A: A person on a diet lose 2.6 kg per week. We need to express the mass loss rate if the dieter could…

Q: A radioactive material disintegrate at such a rate that after 3.4 seconds, only 79% of the original…

A: time = 3.4 seconds Let the original amount of substance = Nofinal amount of susbstance = N It is…

Q: There are next-generation alternatives to uranium for use in nuclear reactors, including thorium…

A: Uranium is used as most important fuel in nuclear reactors. This is found out in nature in the form…

Q: 2. A person on a diet loses 2 kg per week. Find the average rate of mass loss in milligrams every:…

A: Losses mass (m) = 2 Kg = 2000000 miligramTime (t) = 1 week = 7 days = 604800 seconds

Q: A sample of uranium-235 is to be studied. How long will it take for the sample to reach 65% of its…

A: An unstable nucleus will undergo radioactive decay. They will release radiation and become stable.…

Q: A radioactive substance is known to decay at a rate proportional to the amount present. If initially…

A:

Q: One isotope contains an equal number of protons and neutrons, another isotope of the same element…

A: Let AM1 be the atomic mass of first isotope and AM2 is the atomic mass of second element.  We know…

Q: A sample was weighed three times and the following results were obtained: 12.52 g, 12.50 g, and…

A: Average value is given by the sum of given values divided by total number of values .

Q: Elemental carbon has 6 protons and 6 neutrons. This is often described as carbon-12. Carbon-13 has 6…

A: Mass Number = Number of protons + Number of neutrons For Plutonium: Mass Number = 244 Number of…

Q: The rate of a simple enzyme reaction is given by the standard Michaelis–Menten equation: rate = Vmax…

A: Given: Rate = Vmax SS+km

Q: Ann analysed mercury content on a canned fish and the permissible limit of mercury in fish is 0.1…

A: Introduction: Cold Vapor Atomic Absorption Spectroscopy or CVAAS is one of the primary techniques…

Q: Compute the mass of 1 m3 of nuclear matter and the mass of Earth (6x1024 kg).

A: Required :  Mass of 1 m3 of nuclear matter and mass of the Earth.

Q: The efficiency of a nuclear power plant is 35.4.0%. If 243.05.0 kW of power are produced by the…

A: The efficiency of a nuclear power plant is 35.4 %

Q: A dead body was found within a closed room of a house where the temperature was a constant 70° F. At…

A: Given:  At t = 0 , i.e. at time of death, Temperature of body = 98.6o F At t = t1 hours i.e. at time…

Q: List at least two major potential advantages of power production by fusion rather than by fission.

A: Advantages of power production by fusion rather than by fission are to be stated.

Q: The intensity of radioactivity depends on the distance of the recipient from the source of radiation…

A: Given that Intensity is inversely proportional to the distance from the object. so I1  DIRECTLY…

Q: Large amounts of depleted uranium (238U ) are available as a by-product of uranium processing for…

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Q: (a) Estimate the years that the deuterium fuel in the oceans could supply the energy needs of the…

A: We know,  Mass number of deuterium = 2  Number of atoms and molecules in one mole = NA = 6.022×10²³…

Q: The ceramic glaze on a red-orange Fiestaware plate is U2O3 and contains 50.0 grams of 238U , but…

A:

Q: Question: A sample of radioactive element has a mass of 10 g at an instant t = 0. The approximate…

A: Given a sample of radioactive element has, Mass, Mo=10 g At an instant, t = 0. After two means…

Q: The intensity of radiation at 10 ft was 200 R/hr. If the technologist moved to 5 ft from the source…

A:

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.