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almond37 [142]
3 years ago
5

If a carbon atom has 7 neutrons and 6 protons, what is its mass number?

Physics
1 answer:
geniusboy [140]3 years ago
7 0

Answer:

the answer to the question is 13

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inysia [295]
Distance to the moon: 238,900 miles

238,900 divided by 100= 2389 hrs

2389 hrs divided 24 hrs= 99.5 Days

Given you could “drive” to the moon, it would take about 100 days
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If the total mechanical energy of a swinging pendulum is 75 J,
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Answer: h= 1.5 m

Explanation:

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U=mgh

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Suppose you take a 50gram ice cube from the freezer at an initial temperature of -20°C. How much energy would it take to complet
notsponge [240]

Answer:

The amount of energy required is 152.68\times 10^{3}Joules

Explanation:

The energy required to convert the ice to steam is the sum of:

1) Energy required to raise the temperature of the ice from -20 to 0 degree Celsius.

2) Latent heat required to convert the ice into water.

3) Energy required to raise the temperature of water from 0 degrees to 100 degrees

4) Latent heat required to convert the water at 100 degrees to steam.

The amount of energy required in each process is as under

1) Q_1=mass\times S.heat_{ice}\times \Delta T\\\\Q_1=50\times 2.05\times 20=2050Joules

where

'S.heat_{ice}' is specific heat of ice =2.05J/^{o}C\cdot gm

2) Amount of heat required in phase 2 equals

Q_2=L.heat\times mass\\\\\therefore Q_{2}=334\times 50=16700Joules

3) The amount of heat required to raise the temperature of water from 0 to 100 degrees centigrade equals

Q_3=mass\times S.heat\times \Delta T\\\\Q_1=50\times 4.186\times 100=20930Joules

where

'S.heat_{water}' is specific heat of water=4.186J/^{o}C\cdot gm

4) Amount of heat required in phase 4 equals

Q_4=L.heat\times mass\\\\\therefore Q_{4}=2260\times 50=113000Joules\\\\\\\\\\\\Thus the total heat required equals Q=Q_{1}+Q_{2}+Q_{3}+Q_{4}\\\\Q=152.68\times 10^{3}Joules

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Wood, stone, iron, copper, steel, wildlife, and Us.
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0 111.0N be cause the rest do not add up

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