QUESTION: If the polar ice caps of the earth were to melt, what would the effect of the length of the day be? ANSWER: Earth rotates about...

QUESTION: A girl is swinging seated in a swing. What is the effect on the frequency of oscillation if she stands? ANSWER: If the girl...

QUESTION: The bob of a simple pendulum is a hollow sphere filled with water. How will the period of oscillation change, if the water...