Troubleshooting F = q v B sin(theta) Calculation

[MichaelTam]

Homework Statement

Exercise

Relevant Equations

$F = q v B sin(theta)$, q=10mC for the airplane , the other statement are in the picture below.

I use the equation find that $F = q v B sin(theta)$
F = 0.01*300*5*10^-5*0.5
F =75 N
I don’t know why my solution is not correct?

 

[haruspex]

Homework Statement:: Exercise
Relevant Equations:: $F = q v B sin(theta)$, q=10mC for the airplane , the other statement are in the picture below.

I use the equation find that $F = q v B sin(theta)$
F = 0.01*300*5*10^-5*0.5
F =75 N
I don’t know why my solution is not correct?

Your attachment does not seem to show the whole question. It does not ask for the magnitude of the force and does not specify a charge.

 

[MichaelTam]

Sorry , these are the updates.

 

[haruspex]

In the formula $F = q v B sin(theta)$, what is theta?
How does that compare with $\alpha$ in the diagram?

 

[MichaelTam]

Theta is $pi/2 - pi/6$

 

[MichaelTam]

So I get 129.9 micro Newton .

 

[MichaelTam]

Thanks a lot!

 

[IloveMathPhychembio]

But why theta is pi/2-pi/6. Thanks a lot.

 

[kuruman]

But why theta is pi/2-pi/6. Thanks a lot.

What is the angle between vectors $\mathbf{v}$ and $\mathbf{B}$? Remember that the vectors must be placed tail-to-tail.

 

[IloveMathPhychembio]

What is the angle between vectors $\mathbf{v}$ and $\mathbf{B}$? Remember that the vectors must be placed tail-to-tail.

Thanks for your help and BTW do you know smth about kirchhoff's current law I've watch sooooo much videos about it and I don't understand why.

 

[IloveMathPhychembio]

Thanks for your help and BTW do you know smth about kirchhoff's current law I've watch sooooo much videos about it and I don't understand why.

Thanks a lot for your help too

 

[kuruman]

Thanks for your help and BTW do you know smth about kirchhoff's current law I've watch sooooo much videos about it and I don't understand why.

I do know smth about Kirchhoff laws, but if u want to ask a question about them, u have to start a new thrd.

 

[IloveMathPhychembio]

I opened the thread called charge on cloud coulomb law cause I’ve finish the question by researching online day and night but thanks for your nice help and can you help me to deal with the new question