At what temperature will the velocity of sound double than thevelocity in air at 22°ca) 1000k b) 1180k c) 1120kd)1200k

What are similarities and differences between refraction, reflection, diffraction and absorption?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.