Which of the following is one of the main functions of a transistor in a circuit? A. To store charges on conductive plates in a circuit
B. To act as a switch to control the flow of charge in a circuit
C. To heat up by opposing the flow of charge through the circuit
D. To force positive charge to move against it's natural tendency​

If steel is more dense that lake water, why can a boat float

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block