Question

Hey frnds,plz plz help me solve this question!
The best answer would be marked as Brainliest​

Answer 1

Answer:

Step-by-step explanation:

(A)R=kl/r^2

(B)r=√(kl/R)

(C)¡ : R=40

l=2

r=1/2

40=2K×4

K=5

(C)¡¡ : r=1/√3

=√3/3

Answer 2

Ayesha!!!!

Yr I will explain it to u tomorrow at school...

like v studied yesterday abt the resistance thermometer,u just need to do the same here..open pgs 157 of the past papers.

goodnight