Consult the periodic table. an electrically neutral atom has the following electron configuration: 1 s 22 s 22 p 63 s 2 . what is the name of this atom? a)magnesium (mg)
b)sodium (na)
c)oxygen (o)
d)aluminum (al)

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Condensation happens when water vapor cools. true or false? ?