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# What does e equal?

# What does E equal in a science equation?

This can be answered in two ways... If you're talking about Einstein's equation, then E=MC2. If you are wondering what E means, it stands for energy, so Einste…in's equation means, "energy is equal to mass times the speed of light squared'.

# What does e equals ir stand for?

E=IR is Ohm's Law. Electromotive Force equals current times resistance. It is the fundamental equation of electronicalism.

# What does E equals mc2 describe?

e=mc2 is a theory proven by ainstien just before he died so noone else knows it, it explains that energy is equal to the speed of light when it is in a vacume.

# What is e in e equals mc2?

E=mc2 means energy=mass multiplied by the speed of light squared.

# What does E equals MC² mean?

E=MC2 Energy equals the mass times the speed of light squared E=energy M=mass C=speed of light This is a formula for either converting mass to energy or light to equi…valent matter. The highest theoretical speed possible is the speed of light. No real matter currently known of can exceed the speed of light. Albert Einstein created the formula to calculate the amount of energy in matter. For example: 1 kg of water has 111 g of hydrogen atoms. So... Energy=Mass (0.111) x the speed of light (3x10^8) squared, so... 0.111 multiplied by 3x10^8 multiplied by 3x10^8 equals 9.99x10^15 ! Hope you liked my explanation! (+correction and elaboration) It is the mass-energy equivalent. The "e" stands for energy, the "m" stands for mass (rest- mass- basically when it is not moving) and the "c" stands for the speed of light. So to work out the energy in something you just take the speed of light (approximately 300,000 km per second in a vacuum),square it and then times it by it,the mass that it has ; this will show you that if all the mass in that object was suddenly converted to energy, how much it would be. It turns out to be a lot even for something tiny like a few molecules! It means that any type of energy has an equivalent mass; and mass has an equivalent energy. It also provides the formula to calculate one, on the basis of the other (the proportionality constant).

# What does E equals mc2 represent?

E=Mc2 was a way Einstein made up. E=MC2 means energy equals the mass (M) and the C is the speed of light squared.(E=energy,M=Mass,C=speed of light,2=squared)

# How do you use e equals mc2?

The formula E=mc2 shows that matter and energy are interrelated, matter can be converted into energy and energy can be converted into mass. E=mc2 Where: E is Energy …in Joules (J) m is mass in kilograms (kg) c is the speed of light in meters per second (ms-1) which is 3.0x108 ms-1 c2 = 3.0x108 x 3.0x108 = 9.0x1016 The simplest way to show how to use the formula is to give some examples. Example 1 - Burning Coal If we burn 1 tonne of coal then about 36GJ of energy is released. Rearranging the equation E=mc2 we get m=E/c2 so m = 3.6x107/9x1016 = 4x10-10kg = 0.4μg If we weigh the coal and air before burning and the ash and air after burning we would find that the stuff remaining afterwards would be 0.4μg lighter than what we started with. Obviously it would be impossible to measure a change of 0.4μg in 1 tonne of coal and about 10 tonnes of air but with more energetic reactions and very sensitive equipment it has been shown to be true for chemical reactions. Example 2 - Fission of Uranium-238 The results are more useful in nuclear reactions, during the fission of 1kg of Uranium-235 about 6.7x1010J of energy is released. Using the equation m=E/c2 as we did in example 1 we get m=6.7x1010/9x1016 = 7.4x10-7kg = 0.74mg. A loss of mass of about 0.000074%, small but definitely measurable. Example 3 - Total conversion of matter If we were able to convert 1kg of mass completely into energy (the only way currently known how to do this is to have antimatter to collide with matter but the amounts produced with our current technology have not exceeded a couple hundred of atoms) then the energy released can be calculated using E=mc2. E = 1 x 9x1016 = 9x1016J. Example 4 - Providing all human energy requirement using matter conversion Finally, in 2005 the Earth's total energy use was 5x1020J. If it were possible to convert matter fully into energy then we can calculate how much mass would be required. m=E/c2 so m=5x1020/9x1016 = 5500kg. The total annual energy requirement of human kind could be provided from just 5.5 tonnes of matter. Its a pity it can't be done........ Notes on limitations of data used above * The figure of 6.7x1010J/kg for Uranium-238 is not very accurate, I estimated it from data in the Encarta link below, it is good enough for an illustration here but I would not suggest using it elsewhere. * See reservations in Wikipedia source link about total energy use of human kind.

# Does e equal mc squared?

Of course Einstein proved it!!

# What formula is e equals pt?

The formula for energy. E is for energy(Units = Joules) P is for power(Units = Watts) T is for time(Units = Seconds)

# What is E equal to?

E=MC2 E means energy produced.

# If a equals b and b equals c and c equals d and and d equals e then what does e equal?

They all equal each other. a = b = c = d = e e = a e = b e = c e = d e = e

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In Algebra

# What does E equal in algebra?

E equals whatever you need it to to fit the equation.... for instance....3E=9....9/3=E.....E=3.. I'm only 12 so don't make fun of my answer..

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# What does c equal if E equals mc2?

In the equation E=mc2 'c' is equal to the speed of light (in a vacuum) or 2.997*108. or... 186282.397 miles per second 670616629 miles per hour Or if you're metric 1….07925285 × 109 kph 299792458 metres per second * * * * * Actually, the equation "works" only in SI units. With any other units you will need to introduce a constant which is based on the units used.

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# When is E equals MC2 invented?

It was invented in the 20th century

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# What does E equals mcö stand for?

energy

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# What is E squared equal?

(a)*2 * 2(mc)*2 (c)4