From the calculations, the mass of the pole is 82 Kg.
<h3>What is potential energy?</h3>
The term potential energy has to do with the energy that is possessed by a body by virtue of its position.
Given that;
height = 6.15 m
PE = 4942 J
mass = ??
g = 9.8 m/s^2
Now
PE = mgh
m = PE/gh
m = 4942 J/9.8 m/s^2 * 6.15 m
m = 82 Kg
Learn more about potential energy:brainly.com/question/24284560?
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Don't know for sure but I think it would expand and pop
Answer: Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected and refracted to change their direction. These properties make them ideal for communications.
Explanation:
The body will take 20 seconds to cover a distance of 1000 m i.e. 1 km
B is the correct answer I believe