The neutron is made up of which one of the following quark combinations (up, down, strange, charm, top, bottom)?
A) uud
B) ddu
C) udd
D) ttb
E) bst
C
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Internal forces cannot change the total kinetic energy of a system
Indicate whether the statement is true or false
Imagine that at a certain place in a river, water moves horizontally to the left. Consider an oriented sur-face facing upward. The flux of water velocity through this surface is
A. positive. B. negative. C. zero. D. Impossible to determine from the given information.
Material replacement is one solution to mineral resource depletion
What will be an ideal response?
Sand spits are formed from sand
A) carried along the coast by longshore transport. B) swept up from the seafloor and heaped up along the shore by wave action. C) swept up from the continental rise. D) swept into a heap by tidal currents.