Answer:

Explanation:
Let assume that gases inside bulbs behave as an ideal gas and have the same temperature. Then, conditions of gases before and after valve opened are now modelled:
Bulb A (2 L, 2 atm) - Before opening:

Bulb B (3 L, 4 atm) - Before opening:

Bulbs A & B (5 L) - After opening:

After some algebraic manipulation, a formula for final pressure is derived:

And final pressure is obtained:


Answer:
Doppler effect
Explanation:
this means that at one point when the person running is close to the observer it will appear to run fast but slower as he moves away from the observer
The letter “j” is never found on the periodic table. As for numbers, there’s an infinite amount