Answer:
Efficiency = 5%
Explanation:
Given that,
Supplies energy to the bulb = 100 J
Transferred energy by the bulb = 5 J
We need to find the efficiency of the bulb. It can be given by "

So, the efficiency of the bulb is 5%.
B) atmosphere pressure, i believe
Natural gas creates the least amount of pollution when it's burned
Is there any chemical names listed ?
The centripetal accelaration is increased by a factor of 4