Answer:
Momentum = Mass × velocity
by multiplying mass and velocity of that object , we can find out it's Momentum
P = M × V
Answer:
south
cross sectional area of the beam
Explanation:
v = Velocity of ions =
Number of ions per =
Charge density would be the product of number of ions per and the charge of electrons multiplied by 2 as they are doubly charged.
Current density is given by
The current density is
The direction of the current density is opposite to the movement of the charged particle. The particles are moving north so the direction of current density will be to the south.
Current is given by
where A is the cross sectional area of the beam .
So the cross sectional area of the beam is required to determine the total current in this ion beam.
When light goes into a denser medium (and any medium is denser than vacuum) it slows down. For instance the speed in air is: 11.000293=99.97% of this speed, which seems like almost the same ...Answer:
Explanation:When light goes into a denser medium (and any medium is denser than vacuum) it slows down. For instance the speed in air is: 11.000293=99.97% of this speed, which seems like almost the same ...
Well, the lines of workings are cut off in the middle, and there's no 2nd image.
But I think it must have to do with the "cos" terms at the right end of the picture.
I'm guessing now, because the part I'm interested in would be just past the edge, where we can't see it.
I <em>think</em> that the first line says "cos(some angle)", and at the same place in the second line it says "cos(180 - the same angle)".
If that's what it says, then that's your answer, because cos(anything) is equal to the <em>negative</em> of cos(180 - the same thing).
That's the best I can do for you just now. Honestly, I don't see the connection yet between the question Dave is working on and the two lines I see in the picture.