Answer:
0.6
Explanation:
The volume of a sphere = 
Therefore 
r of the disc = 
Using conservation of angular momentum;
The 
of the sphere = 
of the disc = 
= 0.6
Answer:
Option B
Explanation:
I did a question like this a long time ago so i'm not sure if its right so sorry if its wrong
Answer:
The density will be 0.65 kg/m3
I think it won't float!! I am not sure though.
Answer:
A
The answer to this question is circadian rhythm. A person who has a job that requires working all night and sleeping during the day will end up fighting his or her natural circadian rythm. Hope it helps!
KE = (1/2) (mass) (speed)²
KE = (1/2) (20 kg) (40 m/s)²
KE = (1/2) (20 kg) (1,600 m²/s²)
KE = (10 kg) (1,600 m²/s²)
KE = 16,000 Joules
