An atom of silicon has a mass number of 28 and an atomic number of 14. how can you determine how many protons and how many neutrons are in this atom?

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

Blank is the perceived frequency of a sound wave