Answer:
90db
Explanation:
The 1000, will produce sa.e intensity, since the firecrackers are made of same materials
Answer: Car brakes produces more energy then the bicycle because the cars wheels produces a much bigger force that makes the car go and to stop that force the car uses greater amount of energy that transfers to heat but in a bicycle the wheels do not turn that fast so when you press the break there is less energy that transfer to heat.
Explanation:
When an experiment happens in the USA and the test of the world read it conversions may go wrk v and think that the experiment is false
