What belief did they all hold?

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Smallest intensity of a stimulus that you can detect 50 percent of the time is

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency