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3 years ago

Which quantity can be calculated using the equation E = mc2?

Physics

2 answers:

WINSTONCH [101]3 years ago

4 0

The correct answer is

A: the energy needed to split an atom into separate protons, neutrons, and electrons.

Explanation:

Whenever an atom is split, mass is lost (or converted to energy). Subatomic particles can be broken into smaller subatomic particles. The amount of energy released is equal to the amount of mass converted times the speed of light squared. This is summed up in Einstein's equation E=mc2.

This equation appeared in the report, prepared for the US government in 1945 during the second world war to make an atomic bomb that led to the death of hundreds of thousands of Japanese citizens in Hiroshima and Nagasaki.

White raven [17]3 years ago

3 0

[ E=mc² ] is not the way to calculate any of those choices.

If there's any "missing mass" after any of those things has happened,
then [ E=mc² ] tells you how much energy the mass has become, and
accounts for the missing mass in that way.

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Read 2 more answers

If the pressure of a gas sample is quadrupled and the absolute temperature is doubled. True or False

Vanyuwa [196]

The given statement"If the pressure of a gas sample is quadrupled and the absolute temperature is doubled" is false.

Answer: Option B

<u>Explanation:</u>

As we know the direct relationship between Pressure and Temperature by the Gay-Lussac’s Law,

$P_{1} T_{1}=P_{2} T_{2}$

From this, we get,

$\frac{P_{1}}{T_{2}}=\frac{P_{2}}{T_{1}}$

$T_{2}=\frac{P_{1} T_{1}}{P_{2}}$

So, according to given statement, we have $P_{2} = 4 P_{1}$

Then from the above expression, we can find out the value of $T_{2}$ when pressure increased by 4 times of initial pressure as,

$T_{2}=\frac{P_{1} T_{1}}{4 P_{1}}$

Hence, we get,

$T_{1}=4 T_{2}$

Hence, from the above expression we can say that as we increase the pressure four times, the temperature does not get doubled. So, the given statement in the question is false.

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