Hi,
The correct answer is C. five
I hope I helped :)
1 hour = 3600 seconds.
Energy dissipated = I²Rt = 8²×20×3600 = 4608000 J
you have to substitiute volume of the ballon
Answer:

Explanation:
In order to convert the work function of cesium from electronvolts to Joules, we must use the following conversion factor:

In our problem, the work function of cesium is

so, we can convert it into Joules by using the following proportion:

Answer:
constant volicty of the pumper when they hit ground 7.03-/s