Apiece of pvc plumbing pipe displaces 60 ml when placed into a container of water. if the pipe has a mass of 78g, what is the density of pvc?

Answer : The density of PVC pipe is 1.3 g/mL

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used for density :

Given :

Mass of PVC pipe = 78 grams

Volume of PVC pipe = 60 mL

Now put all the given values in the above formula, we get the density of PVC pipe.

Therefore, the density of PVC pipe is 1.3 g/mL

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

answer7,570,82356 cubic centimeters;