### How much nuclear energy is contained in objects?

Einstein deduced that mass and energy are equivalent, and that E = mc2 where E = energy, m = mass, c = velocity of light. This of course applies to the actual amount of mass destroyed in a reaction, not to the total masses involved. Thus in a nuclear fission reaction in U-235, only a small amount of the total mass of the U-235 nucleus disappears to form energy, most of it appears in the…

### What is the difference between nuclear power and nuclear energy?

Nuclear energy is a quantity of energy measured in Joules, so it has the same units as mechanical or electrical energy. Nuclear power is the rate of production of nuclear energy, so it is Joules per second, or Watts, as other forms of power are. Remember: power = energy flow per second. This applies to all forms of energy.

### Why is there a lot of energy released during a nuclear reaction?

In a nuclear reaction, mass is converted to its equivalent in energy. The energy released is described by the relativistic equation E = mc2. 'E' is energy released, 'm' is mass in kilograms, and 'c' is the speed of light; this is around 3 x 108 (metres per second, but units are unimportant). Squaring this gives us an even larger number - to most people anyway - of around 9 x 1016. Thus for even…

### Why mc2 is used as nuclear fission energy?

That is because of the mass/energy equivalence. The energy that leaves the atoms after a nuclear reaction - initially as gamma rays - has a corresponding mass. If this energy later converts to another type of energy (such as heat), it will still have the corresponding energy. The conversion factor is, precisely, mc2 - that is, an energy of 9 x 1018 joules has a mass of 1 kg.

### What iS thE differnce between nuclear energy and nuclear power?

The only difference is that between energy and power which is a general observation, not limited to the nuclear field. The point is that power is the rate of energy flow, whether production or absorption (use). Thus energy is measured in Joules, and power is simply Joules per second, 1 watt = 1 Joule/sec

### How does nuclear fusion produce energy for the sun?

Nuclear fusion involves the combining (fusion) of two relatively light elements into one slightly heavier element. In the case of the Sun, the primary reaction is the fusion of hydrogen (four protons) into helium (two protons and two neutrons). The energy comes from the fact that the residual binding energy required to sustain helium is less than the energy required to sustain hydrogen, so this energy is released. It is not a lot of energy…

### What unit is nuclear fusion measured in?

The energy from nuclear fusion would be measured in Joules, as for all energies. The power of the process would be in Joules/sec or watts. For an individual nuclear reaction, physicists use the electron volt, which is a very small amount, 1 ev = 1.6 x 10-19 Joules. A fusion of deuterium and tritium nuclei will produce about 17 Mev, or 27.2 x 10-13 Joules. This may appear less than for nuclear fission which produces…

### Is mass in a chemical reaction converted to energy?

Neither energy or mass can be made or destroyed. But can be converted from one to another. In a nuclear fusion reaction (the sun) sole hydrogen atoms are "bonded" together. when this happens a small amount of mass is lost and large amounts of energy is released. The amount of energy released is proportional to the mass lost- E=MC^2. where; E- energy in joules M- mass in grams C- is the speed of light in…

### In an exothermic reaction the energy stored in the chemical bonds of the reactants is?

greater than the energy stored in the bonds of the products Why? Because when a chemical bond is formed, the resulting compound has less potential energy than the substances from which it was formed. Energy is always released when a bond is formed. The greater the energy released during the formation of a bond, the greater its stability. Consider the following reaction: B + C ==> BC + 100 joules The bond formed has less…

### What unit of energy is used to measure nuclear energy?

Scientists use the electron volt (ev), which is a very small unit of energy, 1.6 x 10-19 Joules. The energy produced by fission of one U-235 nucleus is 200 Mev, or 3.2 x 10-11 Joules. In practical terms, the power produced by a nuclear reactor is measured as thermal energy and expressed in megawatts (MW).

### What is the total energy released in a nuclear explosion?

That is both hard and simple to answer. The hard part is based on the fact that it depends on how much of the fuel is converted and on whether it is converted by fission or by fusion. Very few nuclear detonations use anywhere near close to 100% of the fuel. Also, some of the energy goes to subsequent reaction such as to continue the fission reaction in an A-Bomb, and to initiate the fusion…

### How many times bigger is a supernova than a nuclear explosion?

The lowest energy release in a supernova is about 1.5E44 Joules, the highest energy release in a nuclear explosion (i.e. the Soviet Tsar Bomba of 1961) was about 2.17E17 joules (although significantly larger yields are possible, nobody has seen any reason to build one). This is 27 orders of magnitude between the smallest supernova and the largest nuclear explosion that was ever done!!!

### Where does the energy in a nuclear chain reaction come from?

The energy in a nuclear reaction comes from the release of some of the residual binding energy that holds the nucleus together. When you split heavy isotopes, such as uranium-235, or when you fuse light isotopes, such as hydrogen-2, the total binding energy required is reduced by a small amount. This difference is released as heat and radiation. This release of energy is accompanied by what seems to be a loss of mass. (But see…

### Thermal energy is measured using what units?

BTU's or calories are directly related to the heat capacity of a substance or the heat produced in a reaction. All energy can be expressed in Joules, and for heat the relation is 4.2 Joules per calorie, this is called the mechanical equivalent of heat. Thermal energy is measured in joules (j). 1 calorie = 4.2 Joules Answer In SI, all forms of energy are expressed in joules (J). The British Thermal Unit (BTU) is…

### Why is heat measured in joules?

The way the word "heat" is defined in physics, it is a type of energy - and energy is measured in joules. The way the word "heat" is defined in physics, it is a type of energy - and energy is measured in joules. The way the word "heat" is defined in physics, it is a type of energy - and energy is measured in joules. The way the word "heat" is defined in physics…

### What was so important about Albert Einstein's discovery on E equals MC?

E represents energy in Joules, m represents mass in kilograms and c represents the speed of light. Let's say we have a gram of mass. By Einstein's energy equation, that gram of mass has 299,792,458 x 299,792,458 x 0.01b of energy. That works out to exactly 89,875,517,873,681.764 Joules of energy in one gram of ordinary matter. That's 90 trillion Joules. For comparison, the atomic bomb dropped over Hiroshima by the United States released 60 trillion…

### Is Nuclear energy the same as nuclear power?

They are used interchangeably in the media, but they are not really the same. The question could be put 'is energy the same as power', and the answer is no. Energy is the capability of doing work, it has the same units as work, and when work is done energy is expended. The units of energy are Joules, and can also be expressed in calories, BTU, and ft.lbforce. These all relate to each other by…

### How many joules are in a kilogram?

Those units are not at all comparable in ordinary settings. A joule is a unit of energy. A kilogram is a unit of mass. The only comparison that can be made is in the world of Einsteinian physics, where matter can be completely converted to energy via nuclear processes. The equation for the amount of energy released is of course the famous E = mc**2, where E is energy, m is mass, and c is…

### Describe the six forms of energy?

1.Mechanical Energy In physics, mechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. 2. Thermal Energy Thermal energy is the part of the total internal energy of a thermodynamic system or sample of matter that results in the system's temperature. 3.Chemical Energy Chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction or, to transform other chemical substances…

### What is the amount of energy released for each disintegrating atom?

When a uranium atom decays into two fragment atoms, an energy of ~200 MeV is released. Of this energy, 168 MeV is the kinetic energy of the daughter atoms, which fly apart at a speed of c/30 due to Coulomb repulsion. Also, an average of 2.5 neutrons are emitted with a kinetic energy of ~2 MeV each. Finally, the fission reaction emits a ~30 MeV gamma ray photon. In physics, the electron volt (eV) is…