Answer:
(C) case study
Explanation:
CASE STUDY IS STUDY METHOD WHICH IS SEEN IN LIFE SCIENCE AND SOCIAL LIFE SCIENCE. CASE STUDY IS TO EXAMINE A PERSON, A GROUP OF PEOPLE, A UNIT OF PEOPLE AND GENERLISE THAT STUDY OVER SEVERAL UNIT OF PEOPLE. CASE STUDY CONDUCTED FACE TO FACE WITH THE COMMUNITY PEOPLE, A GROUP OF PEOPLE AND GENERALIZE THE STUDY. RESEARCHER DESCRIBE THE CASE STUDY PHENOMENON WORK FOR A COMPLEX PHENOMENON AND HELP IN UNDERSTANDING IN PROBLEM.
They trained their armies very well so they would be ready for another war like WWII if one happened again.
Answer:
0.957mm
Explanation:
The on-axis magnetic field of a current loop(B_loop) is is 4.9 nT
B_loop = (2μAI) / (4πz^3).
Where z is defied as distance from the current carrying loop,
A is the total enclosed area of the loop,
I is the current,
μ is the permeability constant (4π*10^-7).
4.9 nT = (2* 4π*10^-7 *A *32A) / (4π* (50cm)^3)
4.9 *10^-9 = 5.12*10^-5 A
A = 0.0000957 m
=0.957mm
