While on stage introducing the iPhone, Steve jobs walked 3 meters to the right, 9 meters to the left, 7 meters to the right, and then 9 meters to the left. What was his distance walked?

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current