Question

Question:

Answer 1

What tool(s) would you need to use if you are going to make the measurements necessary to calculate the density of a rock? (2 points)

balance
scale and crucible
graduated cylinder and balance
crucible and graduated cylinder
Which of the following is not an example of potential energy? (2 points)

chemical energy
gravitational energy
mechanical energy
nuclear energy

for the first one I probably would pick B. And for the second question I thought that all those examples were potential energy. I'm confused :/

Answer 2

@sweetburger

Answer 3

well D=M/V i guess a balance would be necessary to find the mass and a maybe a graduated cylinder to determine how much water the rock displaces to find the volume. not sure tho.

Answer 4

scale and balance are the same except a balance is more precise

Answer 5

ohhh, what is a crucible. does it help in finding the density?

Answer 6

crucible is like tongs to pick up stuff wihtout ur hands

Answer 7

ohh ok

Answer 8

second question im not sure

Answer 9

lol that one was a hard one

Answer 10

is it chemical energy?

Answer 11

I think it might be gravitational

Answer 12

ohh okay

Answer 13

but can't it be both?

Answer 14

wikipedia said this:
Gravitational energy is potential energy associated with the gravitational field...

Answer 15

Mechanical energy can be either kinetic energy (energy of motion) or potential energy

Answer 16

i read the question wrong it says which one is not an example of potential energy my bad

Answer 17

soooo its probably mechanical energy like you stated

Answer 18

ahh okay, but I'm still not sure since mechanical is both kinetic and potential

Answer 19

i think i'll go with it thou

Answer 20

Thank you :D