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Marianna [84]
3 years ago
13

Explain why sublimation and deposition are classified as physical changes

Physics
1 answer:
Over [174]3 years ago
7 0
Because even though it goes through a phase change it's still water
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State three differences between solid friction and viscosity​
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A lead ball is dropped into a lake from a diving board 5.0 m above the water. After entering the water, it sinks to the bottom w
nirvana33 [79]

Answer:

|D_{depth} |=19.697m

Explanation:

To find Depth D of lake we must need to find the time taken to hit the water.So we use equation of simple motion as:

Δx=vit+(1/2)at²

x_{f}-x_{i}=v_{i}t+(1/2)at^{2}\\  -5.0m=(o)t+(1/2)(-9.8m/s^{2} )t^{2}\\ -4.9t^{2}=-5.0\\ t^{2}=5/4.9\\t=\sqrt{1.02} \\t=1.01s

As we have find the time taken now we need to find the final velocity vf from below equation as

v_{f}=v_{i}+at\\v_{f}=0+(-9.8m/s^{2} )(1.01s) \\v_{f}=-9.898m/s

So the depth of lake is given by:

first we need to find total time as

t=3.0-1.01 =1.99 s

|D_{depth} |=|vt|\\|D_{depth} |=|(-9.898m/s)(1.99s)|\\|D_{depth} |=19.697m

6 0
3 years ago
The greenhouse effect traps the sun's energy on Earth similar to
Gre4nikov [31]
D is the answer on this
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If the total time is 120 seconds and the total distance is 320 meters. Calculate
RUDIKE [14]

Answer:

S=D/T

320/120= 2.66 miles

Explanation:

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