Which is not a phase of matter?
A) solids
B) liquids
C) gases
D) vacuum
Answer: D
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Which of the terrestrial planets has rings?
a. Mercury b. Venus c. Mars d. None of the terrestrial planets has rings.
Isotopes of an element differ in their numbers of ______________
Fill in the blank(s) with correct word
A car enters a 300-m radius flat curve on a rainy day when the coefficient of static friction between its tires and the road is 0.600. What is the maximum speed which the car can travel around the curve without sliding?
A) 29.6 m/s B) 33.1 m/s C) 24.8 m/s D) 42.0 m/s E) 37.9 m/s
Bainite is formed by the following procedure with a eutectoid composition carbon steel starting at 800°C (1472°F):
(a) Quench to 500°C (932°F), then hold for 100 seconds, then cool to room temperature. (b) Quench to 600°C (1112°F), then hold for 100 seconds, then cool to room temperature. (c) Quench to 700°C (1292°F), then hold for 100 seconds, then cool to room temperature. (d) Quench to room temperature in 10 seconds.