When a body oscillating on a horizontal spring passes through its equiibrium position, its acceleration is zero. When the bob of an oscillationg simple pendulum passes through its equilibrium position ,is its acceleration zero?
【简答题】Passage3 Questions are based on the following passage Prometheus is one of the Titans; He was very kind toward humans. At the beginning of human history, they had no fire, and they had to eat everyth...
【简答题】___ is the god of gods. Rhea devised a plan to save Zeus, she give a ____ to Cronus instead. Prometheus was punished by Zeus because he stole ____ for the benefit of man. Pandora opended the box and ...