Astronomical events, such as an asteroid impact or nearly supernova, have probably altered the course of evolution on Earth
Indicate whether the statement is true or false
TRUE
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In 1851 Jean Bernard Leon Foucault demonstrated the rotation of the Earth using a pendulum 11.0 m long, which was set up in the Paris Observatory. What was the period of oscillation of the pendulum?
A) 6.65 s B) 5.63 s C) 1.79 s D) 2.12 s E) 2.58 s
Old Faithful geyser in Yellowstone Park shoots water hourly to a height of 40.0 m. With what velocity does the water leave the ground?
a. 14.0 m/s b. 19.8 m/s c. 20 m/s d. 28.0 m/s e. 784 m/s
A circuit contains two inductors of 6.0-mH inductance in series placed in parallel with an inductor of 8.0-mH inductance. After one of the 6.0-mH inductors burns out, the repair person wants to replace all three inductors with one inductor of equivalent inductance. Assuming inductors combine in series and parallel the same way resistors do, what inductance should she use?
a. 3.0 mH b. 3.4 mH c. 4.8 mH d. 11 mH e. 20 mH
Make a drawing illustrating the positions of the Sun, the Moon, and Earth during a total solar eclipse. Show the shadows of both the Moon and Earth. (It is not necessary to make the drawing to scale.)