1. Two objects are separated by a distance of 1.60 m. One object has a mass of 75 kg and the other has a mass of 50 kg. What gravitational force exists between the two objects?

It indicates no change in temperature and the process of matter changing its state

Ithink the answer is fusion 

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.