21. If X = î − 3 ĵ and Ỹ = 4 î + 4 ĵ, what is Ẵ × Ỹ? A. zero C. 16 k B. -8 k D. 4 î - 12 ĵ

Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter24: Electric Fields
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21. If X = î - 3 ĵ and Y = 4 î + 4 ĵ, what is X × Ỹ?
A. zero
C. 16 k
B. -8 k
D. 4 î - 12 ĵ
Transcribed Image Text:21. If X = î - 3 ĵ and Y = 4 î + 4 ĵ, what is X × Ỹ? A. zero C. 16 k B. -8 k D. 4 î - 12 ĵ
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