Velocity: You leave on a 549-mi trip in order to attend a meeting that will start 10.8 h after you begin your trip. Along the way you plan to stop for dinner. If the fastest you can safely drive is 65 mi/h, what is the longest time you can spend over dinner and still arrive just in time for the meeting?
A. 2.4 h
B. 2.6 h
C. 1.9 h
D. You can't stop at all.
Answer: A
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Consider an atom of gold in which the nucleus contains 79 protons and 118 neutrons. What is its atomic number and atomic weight?
A) The atomic number is 79, and the atomic weight is 197. B) The atomic number is 79, and the atomic weight is 118. C) The atomic number is 118, and the atomic weight is 197. D) The atomic number is 118, and the atomic weight is 79.
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a. half-silvered mirror. b. convex mirror. c. concave mirror. d. plane mirror.
A Type Sa galaxy is a spiral with a large bulge and tightly wound arms
Indicate whether the statement is true or false
Which of these will always produce a magnetic field?
A. Another magnetic field B. A moving charge C. A negative charge at rest D. A positive charge at rest