How is color related to wavelength?
1 answer:
Answer to d.
Color travels in waves which are loosely divided into into short medium and long in length. because color travel at different wavelengths some are easier to see than others but the amount of light is also a factor. in general however green is the most visible color from a distance.
answer to c.
No it depends on the time of day whether it is light or dark because clors stand out in different wavelenghts
answer to b.
yes that's absolutely true.
answer to a.
No purple is the shortest wavelength and the highest frequency
Color travels in waves which are loosely divided into into short medium and long in length. because color travel at different wavelengths some are easier to see than others but the amount of light is also a factor. in general however green is the most visible color from a distance.
answer to c.
No it depends on the time of day whether it is light or dark because clors stand out in different wavelenghts
answer to b.
yes that's absolutely true.
answer to a.
No purple is the shortest wavelength and the highest frequency
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Answer:
The kinetic coefficient of friction of the crate is 0.235.
Explanation:
As a first step, we need to construct a free body diagram for the crate, which is included below as attachment. Let supposed that forces exerted on the crate by both workers are in the positive direction. According to the Newton's First Law, a body is unable to change its state of motion when it is at rest or moves uniformly (at constant velocity). In consequence, magnitud of friction force must be equal to the sum of the two external forces. The equations of equilibrium of the crate are:
(Ec. 1)
(Ec. 2)
Where:
- Pushing force, measured in newtons.
- Tension, measured in newtons.
- Coefficient of kinetic friction, dimensionless.
- Normal force, measured in newtons.
- Weight of the crate, measured in newtons.
The system of equations is now reduced by algebraic means:
And we finally clear the coefficient of kinetic friction and apply the definition of weight:
If we know that ,
,
and
, then:
The kinetic coefficient of friction of the crate is 0.235.
Answer:
31.1 N
Explanation:
m = mass attached to string = 0.50 kg
r = radius of the vertical circle = 2.0 m
v = speed of the mass at the highest point = 12 m/s
T = force of the string on the mass attached.
At the highest point, force equation is given as
Inserting the values
T = 31.1 N