Thats a hard one, From The looks of it, it looks like B, Because it would leave a gap in the flow for a small amount of time
Answer:
Weight of cow = 7.59 lbs
Explanation:
Given:
Weight of cow = 1518 lbs
Find:
Weight of heart of a cow
Computation:
Note: It is not given that in the mammals the weight of heart is approximately 0.5% of total body weight
Weight of heart of a cow = [Weight of cow][0.5%]
Weight of cow = [1518][0.5%]
Weight of cow = 7.59 lbs
Answer:

Explanation:
Given
-- radius of hydrogen atom
<em>See attachment</em>
Required
Determine the radius of magnesium atom (R)
From the attachment, the ratio of a hydrogen atom to a magnesium atom is:

Simplify

Represent the radius as ratio:

Substitute 

Equate both ratios

Express as fraction

Cross Multiply







Hence, the radius of the magnesium atom is: 
They all travel by the same speed and light