Phytophotodermatitis happens when certain plant chemicals cause the skin to become inflamed following exposure to sunlight.
Answer:
The time is
Explanation:
From the question we are told that
The diameter of the circular saw is
The peripheral speed is
The time taken for the blade to come to rest is t = 17 s
The total acceleration of the tooth considered is
Generally the radius of the blade is mathematically represented as
Generally the tangential acceleration of the blade is mathematically represented as
Here v is the final velocity of the tooth of the blade which is zero since the blade came to rest
so
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Generally the total acceleration of the tooth of the blade is mathematically represented as
Here is the radial acceleration , now making the subject of the formula we have that
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Generally radial acceleration is mathematically represented as
Here is the velocity at which the total acceleration is 130 ft/s2.
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Generally the time at which the total acceleration is 130 ft/s2. is mathematically represented as
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Answer:
50.76°
Explanation:
To find the angle between the two polarizers, you take into account that each polarizing sheet reduces the intensity of the light. Then, you have:
After the unpolarized light crosses the first polarizer:
After light crosses the second polarizer:
θ: angle between the two polarizing sheets
When the light emerges from the second polarizer the intensity of the light is 0.2 times the initial intensity, then you have:
hence, the angle between the polarizing sheets is 50.76°
Answer:
Explanation:
average speed is distance traveled over time
v = (50 + 30(1.5)) / (2 + 1.5) = 27.1428571...
v = 27 km/hr