What happens when you turn the fine adjustment knob?

Once you have the highest magnification lens in place, look into the eyepiece. . At this point, if you use the coarse adjustment knob you will break the slide and scratch the lens. Also, if you use the fine adjustment knob too quickly you may also run the lens into the slide and break it.

Explanation:

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.

the answer is c

tell me if wrong