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steposvetlana [31]
3 years ago
7

Why do some objects such as windows and doors close in the winter but can be harder to close in the summer?

Chemistry
2 answers:
Elenna [48]3 years ago
4 0
When the temperature rises some materials experience thermal expansion which means they get bigger, so it may make them harder to close because they don't fit as well.
monitta3 years ago
4 0
Because of the temperature rise
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Explain why each mineral has its own properties, different from every other mineral
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What is the difference between a rock and a mineral?
SVEN [57.7K]

Answer:

A rock is an inconsistent mixture of minerals, while mineral is "pure" and made  up of a precise combination of chemicals.

Explanation:

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2 years ago
The image shows two opposite forces acting on a rolling cart, what can we say is true about the effect on the forces on the cart
bonufazy [111]

Question options:

1. It cannot be determined without knowing which man is stronger.

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Answer:

<em>2.The forces are unbalanced, and net force on the cart moves it to the left.</em>

Explanation:

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It is because the person on the right side exerting force  (50N) toward the left, rolling cart will moves to the left.

6 0
2 years ago
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<span>Platinum is solid at room temperature. SInce the catalyst is solid while the medium involves gases, this catalyst is characterized as heterogenous. Because they are different states of matter, they can be easily separated through physical means. So, the answer is B.</span>
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3 years ago
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