Answer:
time = 5.22 hr
Explanation:
Given data:
Energy of battery = 9400 J
Power consumed by three led bulb is 0.5 watt
we know Power is give as

plugging all value and solve for time


time = 18,800 sec
in hour
1 hour = 3600 sec
therefore in 18,800 sec

Answer: A collective noun does name a group of people like a family and also it can also be for objects too.
Collective noun: A noun that is in singular form but that refers to a group of people of things
Explanation: