Answer:
Electromagnetic waves do not require any medium to travel whereas mechanical waves must have a medium to propagate.
So, Basically, it is B I believe.
Hope It Helps!
Answer:
They are both extremely hot, they both produce a form of light, they both have/use fire(typically)
Explanation:
B: Energy lose
i say this because in order to change they lose energy.
Answer:

Explanation:
Given that,
The speed of a driver, v = 80 km/h = 22.22 m/s
The mass of the truck, m = 2000 kg
We need to find how much internal energy is produced. The internal energy produced by a truck is its kinetic energy and it is given by :

or

So,
of internal energy is produced.
The answer for that is True.