Consider a very small hole in the bottom of a tank that is in diameter and filled with water to a height of Find the speed at which the water exits the tank through the hole
A) 44.1 m/s B) 17.64 m/s C) 4.20 m/s D) 48.3 m/s
C
Physics & Space Science
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A container of ideal gas at STP undergoes an isothermal expansion and its entropy changes by 3.7 J/K. How much work does it do?
A. zero
B. 
C. 
D. none of the above.
Physics & Space Science
For a galaxy to be active, the supermassive black hole needs to have matter flow into it
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
The nucleus makes up about what percentage of the mass of an atom?
a. 99.9% b. 50% c. 90% d. 5%
Physics & Space Science
If you toss a ball straight upward at 40 m/s with no air resistance, one second before it reaches the top of its path its speed is
A) zero. B) 10 m/s. C) 20 m/s. D) 30 m/s E) 40 m/s.
Physics & Space Science