Checking Magnetic Flux Calculations: BA cos(delta) = 0.512 Weber & NBA = 9 Weber

[zack7]

Homework Statement

The first question I used BA cos(delta)
My answer was 0.512 Weber

The second question I used NBA
My answer was 9 Weber

I would like to know whether my answers are right thank you

[PLAIN]http://img263.imageshack.us/img263/751/doentx.jpg[/CENTER]​

 

[PeterO]

Homework Statement

The first question I used BA cos(delta)
My answer was 0.512 Weber

The second question I used NBA
My answer was 9 Weber

I would like to know whether my answers are right thank you

[PLAIN]http://img263.imageshack.us/img263/751/doentx.jpg[/CENTER][/QUOTE]

Second answer looks good.

Question about the first - was cos the correct function or should you use sin??

To test, you could consider if the question had used 90 degrees as the angle.
Would there be any flux through the area.
cos 90 = 0 ; sin 90 =1. would you want a zero answer [use cos] or a numerical answer [use sin] That's how I decide. Since the angle can be defined different ways [like those problems inclined to the vertical or inclined to the horizontal] it is not a good idea to decide on a function and try to use it in every problem.​