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3 years ago

PLEASE HELP ME WITH THIS ONE QUESTION

Physics

1 answer:

WITCHER [35]3 years ago

4 0

Answer:

the correct is D

Explanation:

In the calorimetry exercises, if there are no losses, we assume that all the heat lost by one body is absorbed by the other, but if there are losses

Q_ {yielded} = Q_ {absent} + Q_ {lost}

Since energy cannot be created or destroyed, they only ask to change, therefore the term of the absorbed heat must decrease, consequently the final temperature of the system is lower when there is loss of energy.

When checking the answers, the correct one is D

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3 years ago

When an object is fully converted into energy the amount of energy liberated is

EleoNora [17]

Answer:

Mass, m = 4 kg

Explanation:

Given the following data;

Energy = 3.6 * 10^17 Joules

We know that the speed of light is equal to 3 * 10⁸ m/s.

To find the mass of the substance;

The theory of special relativity by Albert Einstein gave birth to one of the most famous equation in science.

The equation illustrates, energy equals mass multiplied by the square of the speed of light.

Mathematically, the theory of special relativity is given by the formula;

$E = mc^{2}$

Where;

E is the energy possessed by a substance.
m is the mass.
c is the speed of light.

Substituting into the formula, we have;

$3.6 * 10^{17} = m * 300000000^{2}$

$3.6 * 10^{17} = m * 9*10^{16}$

$m = \frac {3.6 * 10^{17}}{9*10^{16}}$

Mass, m = 4 kg

8 0

3 years ago