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Which one of the following statements is true concerning scalar quantities?

Which is not an end product of fermentation?

If r = { 5 i } m and F = { 10 k } N,   the moment r x F equals   { _______ } N·m. 

Which of the following events happens in specialized transduction?

The x and y components of a displacement vector are –3.00 m and +4.00 m, respectively. What angle does this vector make with the positive x axis?

What characterizes those most likely to vote in the next election?

Three vectors A, B, and C have the following x and y components: Ax = 1 m, Ay = 0 m, Bx = 1 m, By = 1 m, Cx = 0 m, Cy = –1 m According to the graph, how are A, B, and C combined to result in the vector D?

The accompanying figure shows the absorption spectrum for chlorophyll a (solid line) and the action spectrum for photosynthesis (dashed line). Which of the following statements best explains the low rate of photosynthesis at 550 nm?  

Resolve force vector F along x and y axes and write it in vector form.  F = { ___________ } N.  

Use the component method of vector addition to find the components of the resultant of the four force vectors shown in the figure. The magnitudes of the forces are: A = 2.25 N, B = 6.35 N, C = 5.47 N, and D = 4.19 N.   x component y component