If we were to detect radio and TV signals that had leaked out into space from another civilization, this would be an example of
A) a signal used for communication between a civilization's home world and another star system
B) a signal used for communication between a civilization's home world and another planet in its own planetary system
C) a signal used for local communication in the world where the intelligent beings exist
D) an intentional signal beacon
C
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According to Shapley, globular clusters were more common toward constellation Aquarius
Indicate whether the statement is true or false
How long will it take a charged 80-?F capacitor to lose 20% of its initial energy when it is allowed to discharge through a 45-? resistor?
A. 0.92 ms B. 0.64 ms C. 0.40 ms D. 0.19 ms E. 0.80 ms
Over 20,000 stars are visible to the naked eye on the darkest, clearest nights
Indicate whether the statement is true or false
Exhibit 11-1
Two birds of prey hurtling after the same mouse collide in mid-air and grab each other with their talons. Each 250-g bird is flying at 30 m/s at a 60° angle to the ground.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 11-1. What is the magnitude of their total momentum, in 
, immediately after the collision?
A. 0 B. 6.5 C. 7.5 D. 13 E. 15