By what fraction will the frequencies produced by a wind instrument change when air temperature goes from 10.0ºc to 30.0ºc? that is, find the ratio of the frequencies at those temperatures.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

The energy that powers a hurricane is derived from