Velocity is moving against each other cancel each other out. What is the velocity of a airplane that flies at 500 m/h and then encounters a 50 m/h headwind(wind going against the direction of the plane)?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

The energy produced as a result of this flow of electrons from atom to atom is called

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory