What was the question bhaskaracharya and newton asked about the moon

You are sitting on the beach and wondering about the properties of mechanical waves. describe them in terms of ocean waves.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.