The letters LMC refer to the galaxy named _______________
a. Light Magellanic Collection
b. Large Magellanic Collection
c. Large Magellanic Cloud
d. Light Magellanic Cloud
c
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If the average kinetic energy of a volume of ideal gas increases, what must be true?
A. the density decreases B. the pressure increases while the temperature stays the same C. the temperature increases while the pressure stays the same D. both the pressure and temperature increase
Equilibrium: In the figure, a uniform ladder of weight 200 N and length 10 m leans against a perfectly smooth wall. A firefighter of weight 600 N climbs a distance x up the ladder. The coefficient of static friction between the ladder and the floor is 0.50. What is the maximum value of x for which the ladder will not slip?
A. 3.9 m B. 5.0 m C. 6.0 m D. 6.3 m E. 8.4 m
Wave Characteristics: A radio station broadcasts at a frequency of 80 MHz. How far from the transmitter will this signal travel in 67 ms? (c = 3.0 × 108 m/s)
A. 60 × 106 m B. 67 m C. 40 km D. 80 km E. 20 × 106 m
A red shirt is red because it
A) reflects red light but absorbs other colors. B) transmits red light. C) emits red light only. D) absorbs red light but reflects other colors.