Boiling and freezing can occur at the same time when water is subjected to
A) decreased temperatures.
B) decreased atmospheric pressure.
C) increased temperatures.
D) increased atmospheric pressure.
Answer: B
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a. Type A or Type B b. Type I or Type II c. Class A or Class B d. Class I or Class II e. Type C or Type R
During the Sun's main-sequence lifetime, ____
a. the solar wind will remove about 50% of the Sun's total mass b. the solar wind will remove about 10% of the Sun's total mass c. the solar wind will remove 1-2% of the Sun's total mass d. the solar wind will remove a tiny fraction of the Sun's total mass e. mass loss from the solar wind will be balanced by material falling onto the surface from the corona
Thermal Expansion: The coefficient of linear expansion for aluminum is 1.8 × 10-6 K-1. What is its coefficient of volume expansion?
A. 9.0 × 10-6 K-1 B. 5.8 × 10-18 K-1 C. 5.4 × 10-6 K-1 D. 3.6 × 10-6 K-1 E. 0.60 × 10-6 K-1
Energy in Capacitors: Two parallel circular plates, each with a radius of 7.0 mm and carrying equal-magnitude surface charge densities of ±3.0 ?C/m2, are separated by a distance of 1.0 mm with only air between them. How much energy is stored in these plates? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 78 nJ B. 25 nJ C. 7.9 nJ D. 250 nJ