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4 years ago

5

A spaceship left earth to collect samples from mars? Which statement is true about the strength of the earths gravity on moving

spacecrafts

1 answer:

NNADVOKAT [17]4 years ago

6 0

Answer:

The first one

Explanation:

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Which is the transfer of thermal energy in matter with no overall transfer of matter? If you copy the answer from the last quest

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Which of the following is not a velocity?*

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Billy did an investigation to learn whether bean plants will grow if they are given salt water. Billy repeated his experiment th

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Compare two processes we use to measure the age of Earth and its parts.

Kryger [21]

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The three primary methods are: Radiation Measurement. Stratigraphic Superposition. The Fossil Record.

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How much energy is released when the correct number of protons and neutrons come together to form deuterium? a) 0.52 MeV b) 1.7

irga5000 [103]

<u>Answer:</u> The correct answer is 2.24 MeV.

<u>Explanation:</u>

The chemical reaction for the formation of deuterium from proton and neutron follows:

$_{1}^1\textrm{H}+_0^1\textrm{n}\rightarrow _1^2\textrm{H}$

We are given:

Mass of $_{1}^{1}\textrm{H}$ = 1.00784 u

Mass of $_{0}^{1}\textrm{n}$ = 1.008665 u

Mass of $_{1}^{2}\textrm{H}$ = 2.014102 u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

$\Delta m=(m_{_1^2H}+m_{n})-(m_{_1^2H})\\\\\Delta m=(1.00784+1.008665)-(2.014102)=0.002403u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.002403u)\times c^2$

$E=(0.002403u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=2.24MeV$

Hence, the energy released in the given nuclear reaction is 2.24 MeV.

5 0

3 years ago