Answer:
Let the volume of the cube be V and the fraction of cube outside water be f.
Thus, volume of ice inside water = volume of water displaced =(1−f)V
Under equilibrium,
Weight of ice = Weight of water displaced
⟹Vρ
ice
g=(1−f)Vρ
water
g
⟹(1−f)=
10
9
⟹f=
10
1
Thus, the percentage of volume outside water =10%
Answer:
Same
Ben.
Explanation:
m = Mass Bonnie and Ben lift = 50 kg
s = Displacement of mass by both the students = 0.6 m
Work done by both the student is

The amount of work done by both the students will be equal to 300 J.
= Time taken by Bonnie = 1 minute = 60 seconds
= Time taken by Ben = 10 seconds.
Power delivered by Bonnie

Power delivered by Ben

So, power delivered by Ben is more.
Ultra violet
Gamma rays
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