I don’t know what to write for that pls help me

Which feature of a heating curve indicates a change ofn state

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n