Two students 8 meters apart are holding a stretched, coiled spring between them. One student sends a pulse down the string, and they observe it takes 4 seconds for the pulse to go from one e=nd of the spring to the other and then back to it's starting point what is the speed of the pulse on the string

Aresearcher plans to conduct a test of hypotheses at the 1% significance level. she designs her study to have a power of 0.90 at a particular alternative value of the parameter of interest. the probability that the researcher will commit a type ii error for the particular alternative value of the parameter at which she computed the power is: a. 0.90. b. 0.01. c. 0.10. d. equal to 1

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)