Tuesday
July 29, 2014

Homework Help: Physic please help!

Posted by Mary on Thursday, October 11, 2007 at 11:09pm.

I got the correct answer for part (a) but I am unsure of how to tackle part (b). Please help!!!

Interactive LearningWare 22.2 at wiley/college/cutnell reviews the fundamental approach in problems such as this. A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m 0.55 m. The magnetic field has a magnitude of 2.1 T and is inclined at an angle of 75 with respect to the normal to the plane of the loop.

(a) If the magnetic field decreases to zero in a time of 0.46 s, what is the magnitude of the average emf induced in the loop?

emf = -N (cos 75) (B-B0/t-t0)

emf = -1 (0.258819)(-2.1T/0.46s)

emf = -1 (0.258819)(-4.565217391)

emf = 1.18156V

(b) If the magnetic field remains constant at its initial value of 2.1 T, what is the magnitude of the rate A / t at which the area should change so that the average emf has the same magnitude as in part (a)?
__________ m2/s

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Interactive LearningWare 22.2 at wiley/college/cutnell reviews the ...
algebra :( help me!! - The table below shows the weekly earnings of two groups ...
Physic please help! - The electrons in the beam of a television tube have a ...
College Chemistry - Part a: What mass of solid CuCL2 is required to prepare 450....
Physics - I had a two part question in which I'm fairly sure I did the first ...
intro to physics - an athlete executing a long jump leaves the ground at a 28 ...
Math 8R: Homework Check - Part 2 - Part 2: Simplify by combining like terms and...
Ms. Sue - ACT Test - I was wondering if you had any experiences with the english...
physics- please help - A 65 kg bungee jumper leaps from a bridge. She is tied ...
Calc 3 - Consider the points below. P(2, 0, 2), Q(−2, 1, 4), R(7, 2, 6) (a...

Search
Members