A scientific model must make an observational prediction

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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When two organ pipes each closed at one end sound a perfect fifth, such as two notes with fundamental frequencies at 440 Hz and 660 Hz, both pipes produce overtones. Which choice below correctly describes overtones present in both pipes?

a. 440, 880 and 1 320 Hz. b. 660, 1 320 and 1 980 Hz. c. 880, 1 320 and 1 760 Hz. d. 1 320, 2 640 and 3 960 Hz. e. They have no overtones in common.

Physics & Space Science

On a cold winter day, the outside temperature is -20°C and the inside temperature is maintained at 20°C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW

What is the rate of increase of the entropy of the universe as a result of this? A) 13 W/K B) 25 W/K C) 85 W/K D) 99 W/K E) 0 W/K

Physics & Space Science

What did Democritus do?

Physics & Space Science

Many meteorites appear to have formed very early in the solar system's history. How do these meteorites support the nebular theory's scenario for the formation of the terrestrial planets?

A) The appearance and composition of these meteorites is just what we'd expect if metal and rock condensed and accreted as the nebular theory suggests. B) The sizes of these meteorites are just what we'd expect if metal and rock condensed and accreted as the nebular theory suggests. C) The overall composition of these meteorites is just what we believe the composition of the solar nebula to have been: mostly hydrogen and helium. D) The appearance and composition of these meteorites matches what we observe in comets today, suggesting that they were once pieces of icy planetesimals.

Physics & Space Science