The density wave theory explains spurs and branches along the spiral arms
Indicate whether the statement is true or false
F
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A 22
F capacitor is charged to 100 V. What is the energy stored by the capacitor?
A. 0.22 J B. 0.11 J C. 22 J D. 11 J E. 44 mJ
Most radio telescope searches for signs of intelligent life are performed in the water hole
Indicate whether the statement is true or false
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling in the opposite direction on the other side of the highway
When the vehicle is approaching you, you hear the frequency of the siren as 2380 Hz, but when it is past you the frequency becomes 1680 Hz. What is the speed of the vehicle? The speed of sound in air is 343 m/s. A) 35 m/s B) 32 m/s C) 30 m/s D) 41 m/s E) 50 m/s
Calculate the centripetal acceleration for each of the two trials