1. A negative test charge sits in an electric field that is created by a positive source charge. Work is done by the charge resulting in change of electric potential energy of |20 Joules|. Does the charge move towards or away the source charge? Justify you answer by explaining the change of energy and work of the system.

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 conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

Is the vertical component of velocity ever zero?