A vehicle undergoes acceleration when it
A) gains speed.
B) loses speed.
C) changes its direction.
D) all of the above
Answer: D
Physics & Space Science
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An astronomical unit is larger than a light-year
Indicate whether the statement is true or false
Physics & Space Science
If Venus had the same atmosphere as the Earth, it would
A) only be slightly warmer B) be at exactly the same temperature C) be very much warmer D) be slightly colder
Physics & Space Science
A battery is used to light a bulb as shown. An identical battery is connected by closing switch S. What happens to the bulb?
A 20.0 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0
is 331 m/s. What is the frequency of the third mode?
A. 2,070 Hz B. 2,190 Hz C. 2,320 Hz D. 2,450 Hz E. 2,680 Hz
Physics & Space Science