The correct answer is :
B. the value of q is positive.
Hope this helps,
Davinia.
Given: Mass m = 18 Kg; Height h = 3.6 m; Time t = 60 s
Required: Power output in unit of Watts
Formula: P = mgh/t
P = (18 Kg)(9.8 m/s²)(3.6 m)/60 s
P = 10.58 J/s or Watts
Answer: A material called moderator is used to slow down the neutrons released during nuclear fission. The source's neutrons have a high speed and energy. The neutrons' speed is slowed by heavy water or graphite moderators.
Explanation:
Line - A: (15/10) = 1.5 inch/second
Line - B: (0/10) = 0
Line - C: (10/10) = 1.0 inch/second
Line - D: (-25/20) = -1.25 inch/second
<em>Line-A</em> represents the greatest speed.