Does sound increases when it's cold

A small rectangular block of metal must be a magnet is it a. Aligns itself east west when hung up from the ceiling b. Is attracted towards a magnet c. Is made of steel d. Is repelled by a magnet

2. Explain whether the size of an object's displacement could be greater than the distance the object travels.

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How do liquid water, ice and water vapor differnt from eachother

We measure the loudness of sound in decibels. a. True b. False

You are going to develop some photographic film that involves a chemical reaction between the developer, which you will mix yourself, and a chemical on the surface of the film.

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

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A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

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