College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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9. A vector of magnitude 20 is added to a vector of magnitude 25. What is its magnitude?
A. 10
B. 12
C. 35
D. 45
For items 10-11, use the following: Vector A=2.0 cm, 45° and vector B-8.0 cm 30°
10. What is magnitude of B₂?
A. -7.9 cm
B. 1.2 cm
11. What is the magnitude of A + B?
B. 10 cm
A. 12 cm
C. 6.9 cm
C. 9.9 cm
D. 4.0 cm
D. -9.9 cm
12. A piece of silicon wafer measures 10.2 mm x 6.5 mm x 2.8 mm. What is the volume of the
wafer?
a. 185.64 mm³ b. 185.6 mm³
c. 185 mm³
d. 190 mm³
14. Which of the following operations will result to a value of zero?
C. 9j. 4j
B. 5k. -2i
A. 2k. 2k
D. -6i . 8i
A. 327 m/s B. 327.7 m/s C. 328 m/s
E. 8.0 cm
13. Which of the following is an example of systematics error?
A Reading the scale of a ruler incorrectly.
B. Incorrect count of the counter of oscillations of simple pendulum.
C. Parallax error while measuring the volume of a liquid using a measuring cylinder
D. Measuring the diameter of a wire with a micrometer screw gauge that has a zero error
of 0.02 mm.
E. 6.0 cm
15. A student measures the speed of sound as 327.66 m/s. He estimates the uncertainty in the
result as ± 3%. Which of the following give the result to the correct number of significant
figures?
D. 330 m/s
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Transcribed Image Text:9. A vector of magnitude 20 is added to a vector of magnitude 25. What is its magnitude? A. 10 B. 12 C. 35 D. 45 For items 10-11, use the following: Vector A=2.0 cm, 45° and vector B-8.0 cm 30° 10. What is magnitude of B₂? A. -7.9 cm B. 1.2 cm 11. What is the magnitude of A + B? B. 10 cm A. 12 cm C. 6.9 cm C. 9.9 cm D. 4.0 cm D. -9.9 cm 12. A piece of silicon wafer measures 10.2 mm x 6.5 mm x 2.8 mm. What is the volume of the wafer? a. 185.64 mm³ b. 185.6 mm³ c. 185 mm³ d. 190 mm³ 14. Which of the following operations will result to a value of zero? C. 9j. 4j B. 5k. -2i A. 2k. 2k D. -6i . 8i A. 327 m/s B. 327.7 m/s C. 328 m/s E. 8.0 cm 13. Which of the following is an example of systematics error? A Reading the scale of a ruler incorrectly. B. Incorrect count of the counter of oscillations of simple pendulum. C. Parallax error while measuring the volume of a liquid using a measuring cylinder D. Measuring the diameter of a wire with a micrometer screw gauge that has a zero error of 0.02 mm. E. 6.0 cm 15. A student measures the speed of sound as 327.66 m/s. He estimates the uncertainty in the result as ± 3%. Which of the following give the result to the correct number of significant figures? D. 330 m/s
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