Answer:
option a) sound is the right answer
Standard deviation = 3
Explanation:
Given
Required
Determine the standard deviation
First, we need to determine the variance;
This gives:
Know that:
Where SD represents standard deviation
This gives
Take square root
W=31.99 N
W= 8 N (N= kg*m/ s^2)
W= m* g
8 N= m * 9.8 m/s^2
m= 0.816 kg
m*4= (0.816)4
= 3.264 kg
W= mg
= (3.264 kg)(9.8 m/s^2)
Answer: James Chadwick
:)