The age of the given rock is 700 million years.
The given parameters;
- <em>original mass of the rock, = 20 g</em>
- <em>mass of the rock remaining after decay, = 10 g</em>
- <em>half life of Uranium, </em>
<em> = 700 years</em>
age of the rock ----------------------------- mass remaining
0 
------------------------------------------- 20 g
1 half life (
) ------------------------------ 10 g
Age of the rock 
Thus, the age of the given rock is 700 million years.
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Answer:
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Explanation:
Given
Required
Determine the vertical and horizontal components
The vertical (Vy) and horizontal (Vx) components is calculated as thus:
Calculating Vertical Components:
<em> --- Approximated</em>
Calculating Horizontal Components:
<em>--- Approximated</em>
The relationship between force (F), mass (m) and acceleration (a) is described in the equation F = ma. This equation means that a new force acting on a body will change velocity, and conversely, a change in velocity will generate a force
Answer:
9. The Sun's Gravity
10. The core is the densest layer
