Two coils are placed close together in a physics lab to demonstrate faraday’s law of induction. a current of 4.5 a in one is switched off in 0.75 ms, inducing an average 9 v emf in the other. what is their mutual inductance? randomized variables εave = 9 v t = 0.75 ms i = 4.5 a show answer no attempt what is their mutual inductance in mh?

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

it is b that is the answer.