Answer:
Because the disturbances are in opposite directions for this superposition, the resulting amplitude is zero for pure destructive interference
Explanation:
Answer: 1. Carbon dioxide is not an air pollutant
Explanation: it can be toxic and or safe
The answer is 12.5 kg because 250N / 20m/s^2
I hope that helped
Answer: 294 N
Explanation:
Since the Normal Force 
is equal to the weight 
of the dog, we have:
Where:
is the mass of the dog
is the acceleration due to gravity on the Earth's surface
Solving:
Velocity units =m/s
Acceleration is the rate of change of velocity
a =timechange in velocity
Therefore SI units of acceleration is ms−1/s=s2m
