Cobalt is a metal. which best describes the cobalt atom and its interactions with other cobalt atoms?

the valence electrons are weakly attracted to the protons and move amongst the atoms.
the valence electrons are strongly attracted to the protons and stay in the same place.
the nuclear protons are strongly attracted to the neutrons and move amongst the atoms.
the nuclear protons are weakly attracted to the neutrons and stay in the same place.

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r

Which levels of government establish and implement educational requirements for minors