First you will want to sketch out both of the situations. It should be two sketches, one for the flagpole and one for the building.
To solve this, you will want to create a proportion.
Flagpole height/flagpole shadow=building height/building shadow
Therefore, it should look like this:
50/30= 300/x
Solve for x:
50x=9,000
X= 180 feet
YOUR ANSWER IS C.
Answer:
I need help with one to
Explanation:
Im trying to ask someone but no one knows :(
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Answer:
k = 652 lb/ft
Explanation:
Given :
Weight of the collar = 1.6 lb
The upstretched length of the spring = 6 in
Speed = 16 ft/s
PA = 8 + 10
= 18 inch
Let the initial elongation be 
∴ = 18 - 6
= 12 inch = 1 foot
= 13.925 inch
Final elongation in the spring
inch = 0.66 feet
Applying the conservation of the mechanical energy between A and B is
![$\frac{1}{2}k[(1)^2-(0.66)^2]=\frac{1.6}{2}\times (16)^2-1.6 \times 32 \times \frac{5}{12}$](https://tex.z-dn.net/?f=%24%5Cfrac%7B1%7D%7B2%7Dk%5B%281%29%5E2-%280.66%29%5E2%5D%3D%5Cfrac%7B1.6%7D%7B2%7D%5Ctimes%20%2816%29%5E2-1.6%20%5Ctimes%2032%20%5Ctimes%20%5Cfrac%7B5%7D%7B12%7D%24)
k = 652 lb/ft
