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dimulka [17.4K]
2 years ago
8

How is the mass of air in a hot air balloon affected when it is floating?

Physics
1 answer:
Bad White [126]2 years ago
3 0
<h2>sueunxicnrjcnexjsexmjemvjsmzj</h2>
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How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to
madam [21]

The correct answer to the question is : B) 132 Joules.

EXPLANATION :

As per the question, the mass of the gold m = 3 gram.

The initial temperature of the gold T = 21 degree celsius.

The final temperature of the gold  T' = 363 degree celsius.

Hence, the change in temperature  dT = T' - T

                                                          = 363 - 21 degree celsius

                                                          = 342 degree celsius.

The specific heat of the gold is given as c = 0.129\ J/g^0C

We are asked to calculate the heat required ( dQ ) to raise the temperature of gold.

The heat required for this is calculated as -

                                   dQ = mcDT

                                         = 3 × 342 × 0.129 J

                                         = 132.354 J

                                         ≈ 132 J

Hence, the correct answer is 132 J.

8 0
3 years ago
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Darrel wakes up and notices there are water droplets on his window. He is confused about why there are water droplets because it
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Answer:

You didn't put any options but there are water droplets on the window due to dew-condensation.

Explanation:

I learned this in class.

7 0
3 years ago
Which kind of force do you exert on an object when you pull it toward you?
Vilka [71]
It's gravity I believe? I'm not entirely sure.
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When evaluating data, why is it better to make a graph instead of just looking at the raw data in the table?(8th grade Science s
ziro4ka [17]

Answer:All professors planned and thought about data before graph construction. When reflecting on their graphs, professors and graduate students focused on the ... feel more inclusive in the learning process and gain better science process skills, ... We organized data in a table instead of a paragraph with numbers

Explanation:

hope that helps

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you get a flat tire on her car while driving. You use a jack to change the tire. It exerts a force of 5,000 N to lift the car 0.
ch4aika [34]

Answer:

b is the anwser

Explanation:

you are super

6 0
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