Answer:
the answer is helium you already know that because im in college on my way to the military next week bless me
Explanation:
The answer is D.
I hope this helps.
Answer:
0.2885 m/s²
Explanation:
The formula for centripetal acceleration is given as;

Given that;
speed = v = 1.5m/s
radius = r = 7.8

Answer:
the clock hand of watch which have radium-226 for luminance