mary1111

Why does luis place 3 cups of water without any solute in the freezer? a. if some water spills, he will have extra b. the plain water is the control group c. he wants to know how long water takes to freeze d. the 3 cups of water are unnecessary to the exp...

A runner training for a race times 400 meter laps. Lap 1 60sec, Lap 2 57sec, Lap 3 55sec, Lap 4 53sec. What is the average velocity in meters per second? a. 0.563 b. 7.1 c. 14.2 d. 56.25 please help me, I using the average velocity formula but still i get...