The force required to stretch a Hooke’s-law spring varies from 0 N to 75.2 N as we stretch
the spring by moving one end 13.6 cm from
its unstressed position.
1.) Find the force constant of the spring.
Answer in units of N/m.
2.) Find the work done in stretching the spring.
Answer in units of J.

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

The softest and hardest minerals are: softest hardest

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?