1) Which of the following is NOT a scalar quantity?  A. 25 gram coffee B. 13.5 g/mL density of mercury C. 1 hectare of land D. 81 newtons weight on the moon 2) An astronaut needs to walk travel with two displacements with magnitudes 21 cm and 79 cm, respectively. Which of the following is the ONLY choice for the magnitude of the resultant? A. 0 cm B. 37 cm C. 82 cm D. 114 cm

Physics for Scientists and Engineers: Foundations and Connections
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Author:Katz, Debora M.
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Chapter3: Vectors
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Problem 16PQ: Vector A has a magnitude of 4.50 m and makes an angle of 64.0 with the positive x axis. Vector B,...
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1) Which of the following is NOT a scalar quantity? 
A. 25 gram coffee
B. 13.5 g/mL density of mercury
C. 1 hectare of land
D. 81 newtons weight on the moon
2) An astronaut needs to walk travel with two displacements with magnitudes 21 cm and 79 cm, respectively. Which of the following is the ONLY choice for the magnitude of the resultant?
A. 0 cm
B. 37 cm
C. 82 cm
D. 114 cm
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