Answer:
length of column is 140.42 m
Explanation:
in 1 min the soldiers travels 114 steps
so to complete 1 step the time taken by the soldiers =
t = 
t = 
t = 0.526 s
speed of sound = 343 m/s
length of the column = v × t
= 343 m/s × 0.526 s
= 140.42 m
hence the length of column is 140.42 m
The effiency of a machine is
(output work or energy) / (input work or energy) .
For the system described in the question, that's
(123 J) / (150 J) = 0.82 = 82% .
The answer to this physics question would be 'a thin tungsten filament'. The element in an incandescent light bulb that releases light energy is a thin tungsten filament. All the other choices are not applicable as answers to this question.
The electrical charge of particles. The total number of electrons in an atom is always the same as the number of protons in the nucleus. This means atoms have no overall electric charge. The number of protons in an atom is called its atomic hater number.
Answer:
Aufbau diagram of sodium ion:
2s²,2p⁶,3s¹
