Sample Problem 3.07 Cross product, unit- If d = 3î – 4j and B = -2î + 3k, what is 7 = d xB? %3D

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Sample problem 3.10
Vo) 4G
LTÉ 1
90% I 1:24 p.m.
Halliday_Res... 119
find the magnitude of their cross product with Eq. 3-2=
the direction of their cross product with the right-hanc
of Fig. 3-19.
Calculations: For the magnitude we write
c = ab sin ø = (18)(12)(sin 90°) = 216.
(Ans
To determine the direction in Fig. 3-20, imagine placin
fingers of your right hand around a line perpendicular t
plane of d and b (the line on which ở is shown) such
your fingers sweep d into b. Your outstretched thumb
Sample Problem 3.07 Cross product, unit-
If à = 3î – 4j and B = -2î + 3k, what is ở = d × B?
ΚΕY ΙDEA
When two vectors are in unit-vector notation, we can
their cross product by using the distributive law.
Transcribed Image Text:Vo) 4G LTÉ 1 90% I 1:24 p.m. Halliday_Res... 119 find the magnitude of their cross product with Eq. 3-2= the direction of their cross product with the right-hanc of Fig. 3-19. Calculations: For the magnitude we write c = ab sin ø = (18)(12)(sin 90°) = 216. (Ans To determine the direction in Fig. 3-20, imagine placin fingers of your right hand around a line perpendicular t plane of d and b (the line on which ở is shown) such your fingers sweep d into b. Your outstretched thumb Sample Problem 3.07 Cross product, unit- If à = 3î – 4j and B = -2î + 3k, what is ở = d × B? ΚΕY ΙDEA When two vectors are in unit-vector notation, we can their cross product by using the distributive law.
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