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

An Introduction to Physical Science
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ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter20: Atmospheric Effects
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Problem 7SA: (a) Where can lightning take place? (Where can it begin and end?) (b) Describe what is meant by heat...
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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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