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melisa1 [442]
3 years ago
6

10. Juan wants to see how air expands when it is heated. He is able to use any of the following supplies - a balloon, a heat lam

p, a spring scale, and a meter stick. Which is the best procedure to follow for the experiment?
A. Measure the weight of the deflated balloon, inflate the balloon, heat the balloon with the heat lamp, then measure the inflated balloon's width.
B. Inflate the balloon, measure the width of the balloon, heat the balloon using the heat lamp, and then measure the width again.
C. Use the spring scale to measure the weight of the balloon before and after it is blown up.
Physics
2 answers:
kondaur [170]3 years ago
7 0

Answer:

When designing an experiment, always keep in mind the question that needs to be answered.

In Juan's case, he wants to see how air expands when heated. Therefore, he will need to inflate the balloon, measure the width of the balloon, heat the balloon using the heat lamp, and then measure the width again.

Explanation:

zmey [24]3 years ago
4 0

Inflate the balloon, measure the width of the balloon, heat the balloon using the heat lamp, and then measure the width again.

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Semmy [17]

Daniddmelo says it right there, don't know why he got reported.

The potential energy (PE) is mass x height x gravity. So it would be 25 kg x 4  m x 9.8 = 980 joules. The child starts out with 980 joules of potential energy. The kinetic energy (KE) is (1/2) x mass x velocity squared. KE = (1/2) x 25 kg x 5 m/s2 = 312.5 joules. So he ends with 312.5 joules of kinetic energy. The Energy lost to friction =  PE - KE. 980- 312.5 = 667.5 joules of energy lost to friction.

Please don't just copy and paste, and thank you Dan cause you practically did it I just... elaborated more? I dunno. 

4 0
3 years ago
Why does the sky change colors at sunset?
KiRa [710]

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So in short, the answer is D.

(My answer got deleted because it didnt explain which is dumb)

8 0
3 years ago
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Ill give 15 points to the one who helps me with this
alexandr402 [8]
Machenical number one
6 0
3 years ago
If 2 objects had the same momentum, what must be true about the mass of the object that traveled the fastest?
julsineya [31]

Yes, the above-given statement is true

<u>Explanation:</u>

  • The product of the mass x the velocity will be the same for both. Momentum is the action of a body with a particular mass through space and there is the conservation of momentum.
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  • <u>Momentum (p) = Mass (M) * Velocity (v)</u>
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Lorico [155]

Answer:

D. 196 J

Explanation:

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2 years ago
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