1. D
2. A
I’m not sure on 3
Answer:
It is b for sure.
Explanation:
because they are examining urine now that's pure science.
I'm pretty sure the energy an object acquires when exposed to a force is known was potential energy.
The longer you continue to listen, the more beats will be heard.
They'll occur at the rate of (260Hz - 254Hz) = 6 Hz .
