Good scientists use their imagination. what do you think is the difference between being imaginative in doing science and doing pseudoscience?

Imagination is the ability of a man to form mental images without using any senses.

Imagination plays an important role in scientific investigations as it provides an insight of "if and what" conditions but imagination in doing science and pseudoscience has different meanings.

While doing science, persons imaginative ideas can be tested and proved logical or illogical but in pseudoscience, which is based on the belief system, the imagination of a person do not have proofs to support the science.

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.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a