Which of these sources are used to generate electrical energy in power plants? Check all that apply.

coal
natural gas
biodiesel
nuclear reactions
wind
batteries
water

What is the increase in density of a medium due to wave travel?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47