39 liters of water at 20 °C are mixed with
21 liters of water at
60 °C. What is the
temperature of the
mixture?

How many times did thomas edison mess up the light bulb

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.

Me with this and you will be marked brainliest