The compass of an airplane indicates that it is headed due north, and its airspeed indicator shows that it is moving through the air at 400 km/h. there is a wind of 300 km/h from west to east. (a) in what direction is the airplane actually heading? [note: calculate the degree measure of the angle and specify e of n or w of n] (b) expressed in hours, how long a time will it take the airplane to cover a distance of 2000 km?

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

conduct current i mean it makes sense