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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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Explain the causes of yaa asantewaa war of 1900​
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Answer: the conflict began when a british representative - Sr. Frederick Mitchell Hodgson sat on the golden stool.

Explanation:

since the stool wasn't a throne, when Yaa Asantewaa found out, he led a rebellion which killed 1000 British and allied African soldiers and 2,000 Ashanti.      

good luck with your assignment :)

8 0
3 years ago
You buy a magnifying glass at the store. The lens in the magnifying glass is a double convex lens, a lens with two convex curved
Leokris [45]

Answer:

30 cm

Explanation:

f = Focal length = 25 cm

R = Radius of curvature (both sides are equal)

\mu = Refractive index of lens = 1.6

The lens maker formula is given by

\frac{1}{f}=(\mu-1)(\frac{1}{R_1}-\frac{1}{R_2})\\\Rightarrow \frac{1}{f}=(\mu-1)(\frac{1}{R}-\frac{1}{-R}) minus sign because it is on the other side

\\\Rightarrow \frac{1}{f}=(\mu-1)\frac{2}{R}\\\Rightarrow R=2(\mu-1)f\\\Rightarrow R=2(1.6-1)\times 25\\\Rightarrow R=30\ cm

The radius of curvature of the glass surface is 30 cm

8 0
4 years ago
Un prisma rectangular de cobre, de base igual a 36 centímetros cuadrados y una altura de 10 cm se sumerge hasta la mitad por med
butalik [34]

La respuesta correcta es 180 centímetros cúbicos o 180 cm^{3}

Explicación:

El primer paso para saber cuanto alcohol desaloja el prisma es calcular el volumen total del prisma. El volumen se puede encontrar usando la formula V (Volumen) = B (base) x h (altura). El proceso se muestra a continuación:

V  = B x h

V = 36 cm^{2} x 10 cm

V= 360 cm^{3}

Finalmente, el volumen total del prisma debe dividirse en 2 considerando que solo la mitad del prisma fue sumergida y esta mitad equivale al volumen del alcohol desplazado.

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5 0
3 years ago
If a lightning occurred exactly 1 mile from your location, how many seconds will it take for the sound waves created by the thun
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Answer:

5 seconds

Explanation:

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Alecsey [184]

Answer:

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Explanation:

The main cause of mass extinction is Humans cause extinction of a species through overharvesting. The second main  cause is pollution ., introduction of invasive species such as new predators and food competitors, habitat destruction, overhunting and other influences. Another very important cause of mass extinction is the unsustainable human population growth.

The five mass extinction events are

Ordovician Mass Extinction

Devonian Mass Extinction

 Permian Mass Extinction

Triassic -Jurassic Mass Extinction

and Cretaceous -Tertiary (or the K-T) Mass Extinction.

4 0
4 years ago
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