The height need to change by 4 to double the final velocity.
<h3>Final velocity of the object</h3>
The final velocity of an object during a free fall is related to maximum height of fall as given the equation below.
v = √2gh
v² = 2gh
v²/h = 2g
v₁²/h₁ = v₂²/h₂
when v₂ = 2v₁, change in height is calculated as;
h₂ = h₁v₂²/v₁²
h₂ = (h₁ (2v₁)²) / (v₁)²
h₂ = 4h₁v₁² / v₁²
h₂ = 4h₁
Thus, the height need to change by 4 to double the final velocity.
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False because light microscopes have low resolve and magnification.
The formula relevant for this is:
h = v0t + 0.5 gt^2
since the rock was dropped, therefore:
h = 0.5 gt^2
we can see that:
h / t^2 = 0.5 g = constant
therefore:
4.9 m / (1 s)^2 = h / (3 s)^2
<span>h = 44.1 m </span>
Answer:
Hi. can you repost? i cant see the image
Explanation:
The annual cost of electricity is $28.908 .
work done is equal to energy consumed
therefore total energy is calculated as power times the duration of operation .
where W= work done
P=power
t= time of operation
therefore,
total work done (W)=0.06×12×365 kw
=262.8 kw
so total annual electricity bill = 262.8×0.11
=$28.908
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