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DENIUS [597]
3 years ago
7

Pauline is going on a picnic and bringing some sandwiches. She wants to keep the sandwiches cold for as long as possible by putt

ing them in a cooler.
Which of these would be the best material for Pauline's cooler to be made of?
A.
aluminum
B.
glass
C.
iron
D.
plastic
Physics
1 answer:
Alja [10]3 years ago
5 0

Answer:

The correct answer is plastic.

Explanation:

To keep sandwiches cold as long as possible by putting them in a cooler the best material is plastic. The plastic is a thermal insulator used for different uses. One of them is to maintain the temperature in closed containers. Metal and aluminum allow the temperature to flow more easily and glass is not a suitable material for building the cooler.

Have a nice day!

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Explanation:

By Newton's gravitational law, the magnitude of the gravitational force between two objects is:

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M=5.972\times10^{24}\,kg

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F\approx1.98193\times10^{20}N

Now, by Newton's second Law we can find the acceleration of earth ae due moon's pull:

F=M*ae\Longrightarrow ae=\frac{F}{M}=\frac{1.98193\times10^{20}}{5.972\times10^{24}}\approx\mathbf{3.3187\times10^{-5}}

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