How do protons, neutrons, and electrons differ in terms of their electrical charges and locations within helium?

Sarah and michelle work at a tech company that designs exercise apps. sarah tells michelle she has heard that james, their supervisor, interviewed with a competitor and may be leaving the company, which would open up a management position. what kind of power is sarah exerting?

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?