PLZ HELP What is a meteorite?
space debris that enters Earth’s atmosphere
space debris that reaches Earth’s surface
debris that is floating in space
space debris that makes a fireball in Earth’s atmosphere

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.