A car is driven 1 200 m north at 20.0 m/s and then driven 1 600 m east at 25.0 m/s. What is the magnitude of the average velocity for this trip?
a. 16.1 m/s
b. 22.6 m/s
c. 31.3 m/s
d. 11.3 m/s
e. 62.2 m/s
a
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A car and a truck are traveling in the same direction along a straight section of highway. The car is moving at 55. mph and the truck is moving 45. mph. What is the velocity of the truck relative to the car?
What will be an ideal response?
When an unstable Lutetium nucleus undergoes beta decay, the nucleus formed is that of
a. Lutetium. b. Tantalum. c. Ytterbium. d. Thulium. e. Hafnium.
The current produced by voltage in a circuit is impeded by
A) electric barriers. B) closed switches. C) electric resistance. D) none of the above
If a = 60 cm, b = 80 cm, Q = ?6.0 nC, and q = 3.0 nC in the figure, what is the magnitude of the electric field at point P?
A. 71 N/C B. 56 N/C C. 60 N/C D. 53 N/C E. 67 N/C