A board that is 20.0 cm wide, 5.00 cm thick, and 3.00 m long has a density 400 kg/m3. The board is floating partially submerged in water. What minimum mass would need to be set on the board to completely submerge the board?
A)
18.0 kg
B)
12.0 kg
C)
30.0 kg
D)
48.0 kg
E)
42.0 kg
A
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What will be an ideal response?
The meson having which of the following quark contents is electrically neutral?
A. 
B. 
C. 
D. 
E. 
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a. True b. False Indicate whether the statement is true or false