draw an arrow from each box to the correct part of the photo then tell your reason for each choice in your boxes
1 answer:
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Answer: An emission line occurs when an electron drops down to a lower orbit around the nucleus of an atom and looses energy.
An absorption line also occurs when any electron move to a higher orbit by absorbing energy.
Each atom has a unique way of using some space of the orbits and can absorb only certain energies or wavelengths.
Explanation:
Answer:
P₂ = 206945 Pa
Explanation:
given,
gauge pressure = 3.8 atm
1 atm = 101325 Pa
speed of flow,v₁ = 0.62 m/s
diameter of pipe,d₁ = 5.3 cm
diameter of pipe after tapering, d₂ = 3 cm
height above the ground = 18 m
Using equation of continuity
A₁v₁ = A₂ v₂
v₂ = 1.94 m/s
using Bernoulli's equation
P₂ = 206945 Pa
hence, pressure of the pipe at top floor is equal to P₂ = 206945 Pa