Answer:
I think this
One bulb burning out in a series circuit breaks the circuit. In parallel circuits, each light has its own circuit, so all but one light could be burned out, and the last one will still function.
B. Barometer is used to measure atmospheric pressure.
Answer:
= 169 cm
Explanation:
Mass 1 = 45 kg => Force = 450 N
Mass 2 = 29 kg => Force = 290 N
<u><em>According to principle of moments:</em></u>
=> 
Where
= 450 N,
= 109 cm and
= 290 N
=> (450)(109) = 290
=> 49050 = 290
Dividing both sides by 290
=>
= 169 cm