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WITCHER [35]
3 years ago
9

Which of the following would produce a star with the longest lifespan

Physics
1 answer:
irakobra [83]3 years ago
6 0

Answer:

1

Explanation:

because stars with the lowest Mass live longer because they burn out slower than a star with high mass

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Shear causes horizontal movement along a fault plane in a/n _______ fault. A. reverse
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1. A car moves 20 m/s east for 5 sec, 10m/s north for 10 sec and then 30m/s west for 5 sec. Calculate a) displacement
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How does atomic number relate to mass number
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Consider a 10 gram sample of a liquid with specific heat 2 J/gK. By the addition of 400 J, the liquid increases its temperature
stich3 [128]

40 J/g is the heat of vaporization of the liquid.

Answer: Option D

<u>Explanation:</u>

Given that mass of liquid sample: m = 10 g

And, Specific heat of the liquid: S = 2 J/g K

Also, the increase in the temperature of the liquid,  \Delta T = T_{2}-T_{1} = 10 K

Therefore, the total amount of heat energy required is given by:

              q_{1} = m \times S \times\left(T_{2}-T_{1}\right) = 10 \times 2 \times 10 = 200 J

According to the given data in the question,

Total heat energy supplied, q = 400 J

Rest of heat would be q_{2}=q-q_{1}=400-200=200 \mathrm{J}

Now, 200 J vaporizes the mass, half of the liquid from full portion boiled away. So,

                 m^{\prime} = \frac{10}{2} = 5 \mathrm{g}

Latent heat of vaporization of the liquid is L_{v}. It can be calculated as below,

                       q_{2} = m^{\prime} L_{v}

                       L_{v} = \frac{q_{2}}{m^{\prime}} = \frac{200}{5} = 40 \mathrm{J} / \mathrm{g}

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