Answer:Option D
Explanation: Its Just the right answer :)
Answer:
The reaction is endothermic
Explanation:
we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic
Velocity = change in displacement/ change over time
V = 27/ 2 = 13.5m/s
I think it’s the frequency? Because it lower his voice when he whistle again
