Answer the following statement(s) true (T) or false (F)
1. Events A and C are definitely causally connected
1. TRUE
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A vertically polarized beam of light of intensity 100 W/m2 passes through two polarizers. The first polarizer is making an angle of 20° with its transmission axis and the second one is making an angle of 40° with its transmission axis
What is the transmitted intensity of this beam of light? A) 22.2 W/m2 B) 44.4 W/m2 C) 66.6 W/m2 D) 78.0 W/m2 E) 11.7 W/m2
A helium-filled balloon has a volume of 1 m3 . As it rises in the earth's atmosphere, its volume expands. What will its new volume be (in m3) if its original temperature and pressure are 20°C and 1 atm, and its final temperature and pressure are ?40°C and 0.1 atm?
a. 4 b. 6 c. 8 d. 10 e. 1.5
Compared to its average speed in air, the average speed of a beam of light in glass is
A) more. B) less. C) the same.
All the planets move about the Sun in randomly oriented orbits.
Answer the following statement true (T) or false (F)