Two 60.0 ohm resistors are connected in a parallel arrangement connected in series with a 30.0 ohm resistor. The combination is placed across a 120 V potential difference. What is the equivalent resistance of ONLY the parallel portion of the circuit?​

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.

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.