Using calcium’s atomic structure, as shown in the image, what is this element’s atomic number?
Atomic Structure of Calcium

Which changes of state do the labels represent? a: b: c:

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.