Given parameters;
Time taken to complete a lap = 8.667s
Radius of flower = 13.9cm
convert to SI unit of m, 100cm = 1m
13.9cm gives
= 0.139m
Unknown = speed
To solve this problem, we need to first find the circumference of the flower.
Circumference of the circular flower = 2 π r
where r is the radius of the flower;
Circumference = 2 x 3.142 x 0.139 = 0.87m
Now to find the how fast the bug is travelling,
Speed = 
Since the bug covered 1 lap, the distance is 0.87m
Now input the parameters and solve for speed;
Speed =
= 0.1m/s
The bug is travelling at a speed of 0.1m/s
No, no me habla espanol. yo soy ingles
We can use the formula Vf^2= Vi^2 + 2ad.
So,
Vi = 0 since we are dropping the object
Therefore,
Vf^2 = 2 (9.8) (49)
You can do the calculator work.
The frequency of the beam does not change. The direction of the beam, the speed it travels at, the wavelength and indeed the color of the beam will all likely change, but not the frequency and the inherent energy of the beam.
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I believe it is the last one!