an average raindrop has a volume of 0.03ml. How many raindrops fall on a football field that is 120 yards long and 80 yards wide in order to cover it in water 1 inch deep

Work is reduced while time is decreased

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

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.