Why does a mechanical wave require a medium for transmission?

Why can't we use fusion reaction in a nuclear power plant?

How much heat is absorbed during production of 127g of NO by the combination of nitrogen and oxygen?

Which phrase best matches the definition of the term constellation? A. a group of stars that are nearby B. a group of stars that has a name C. a group of stars that are unknown D. a group of stars invisible to the naked eye

Samarium-146 has a half-life of 103.5 million years. After 1.035 billion years, how much samarium-146 will remain from a 205-g sample? 0.200 g 0.400 g 20.5 g 103 g

What term is used for the deepest parts of the ocean floor? A) Ridge B) Slope C) Hydrothermal vent D) Trench

Will Al and s for an ionic compound

The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts

How do the amino acids lysine and alanine combine to form a dipeptide?

Does an oxygen atom form two covalent bonds?

In CCl4 is there a certain length that the main atom Carbon is a certain distance from the Chlorine's?