Question

help with physics simple question!!!!!!!! please!

Answer 1

ik thought it be 1/2 but its not;/?

Answer 2

did you use \[R=\rho l/A\]?

Answer 3

no i looked at this

Answer 4

i tried 1, 1 isnt it

Answer 5

its okay :/

Answer 6

use the equation rajathsbhat gave

Answer 7

A= pi r^2 = pi/4 d^2

Answer 8

i dont get what to plug in? i know length doubles? so L=2? and diameter quadrouples so d=4?

Answer 9

If the length doubles, the resistance doubles also.
If the diameter gets larger, there is more "room" for the current, so the resistance decreases.

In fact, you have to look at the area of the wire when you cut it: it becomes a 4 times as wide circle, so the area becomes 16 times bigger. This means the resistance is multiplied with 1/16.

Now you have to combine the two effects.

Answer 10

so 2 x 1/16= 2/16!?

Answer 11

@ZeHanz

Answer 12

yelpppp

Answer 13

y=h

Answer 14

i only have one more guess left :( so i have to be positive its right

Answer 15

Yes, and 2/16 = 1/8