If the atmosphere were 50% more dense, sunlight would be much redder then it is now. As the atmosphere increase in density, more and more of the blue light would be scattered away in all directions, making the light that reaches the ground very red. Think of the color of a deep red sunset, but this would be the color even at noon.
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Answer:
Explanation:
Since volume of all the liquid is always conserved
so here we know that
now we know that total surface area is given as
You know that the formula for finding horizontal displacement is;
s=uₓt
s=(5 m/s)(3s)
s=15 m
Therefore, the ball travelled 15 m.
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Answer:
10.16 minutes
Explanation:
14 min 34.56 s = 14*60 + 34.56 = 874.56 seconds
The speed of record swimming is distance over time
v = 1500 / 874.56 = 1.715 m/s
0.65 miles = 0.65 * 1609 = 1045.85 m
The time it takes to swim 0.65 miles (1045.85 m) at the rate of 1.715 m/s is
t = s/v = 1045.85 / 1.715 = 609.77 s or 609.77 / 60 = 10.16 minutes
Answer:
Torque decreases .
Explanation:
The tape is pulled at constant speed , speed v is constant , so there is
v = ω r where ω is angular speed and r is radius , As radius decreases , angular speed ω increases , So there is angular acceleration .
Let it be α . Let I be moment of inertia of reel .
Reel is in the form of disc
I = 1/2 m r²
I x α = torque
1/2 m r² x α = torque
As the reel is untapped , its mass decreases , r also decreases , so torques also decreases .