A37 g ice cube at -39°c is placed in a lake whose temperature is 35°c. calculate the change in entropy of the cube-lake system as the ice cube comes to thermal equilibrium with the lake. the specific heat of ice is 2220 j/kg·k. (hint: will the ice cube affect the temperature of the lake? )

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

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative