A student walks 12m south, then 15m east, then 15m west and finally 12m north. How far has the student walked? What is the student's displacement

You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt