Question

help with these problems!?!?!??!?

Answer 1

@Nnesha @nincompoop @JoannaBlackwelder

Answer 2

i give a medal

Answer 3

but i need chocolates

Answer 4

When you take the cross product of k and i, you get another vector.

Answer 5

jk i don't even know that thingy on k and i
sorry

Answer 6

and a vector dotted with another vector will give you a scalar quantity.

Answer 7

can you work the problem out or me im confused really

Answer 8

\[\hat i = \langle 1~,0~,0\rangle\]\[\hat j = \langle 0~,~1~,~0\rangle\]\[\hat k = \langle 0~,~ 0~,~ 1\rangle\]

Answer 9

These are what you call unit vectors because their magnitude is 1. Have you learned about these yet?

Answer 10

So I'll set it up for yuo, and you tell me what you get as your vector.

Answer 11

Now take the cross product of these two vectors.

Answer 12

what would i come up with?

Answer 13

k x i must be either j or -j, since clockwise, ijk is positive and anticlockwise is taken negative then k x i which is clockwise will give j, the dot product is much easier

Answer 14

If you know the meaning of the cross product first.