You haven't included the list of choices that goes with the question, so it's
impossible for me to choose the correct one, or to help you choose it.
Regarding my ability to answer the question and collect the 5-point bounty,
I'm free to make up any phrase of my own that correctly describes an atom.
-- very very very very very very very tiny
-- includes even tinier particles, with electric charges
both positive and negative
-- smaller than the wavelength of visible light
Weight because both gravity and weight are pulling an object down
According to the visible spectrum, we can deduce the following:
- Objects that absorb shorter wavelengths of light are perceived as <u>red</u>.
- Objects that absorb longer wavelengths are perceived as <u>blue</u>.
- Objects that reflect all wavelengths are perceived as <u>white</u>.
- Objects that absorb all wavelengths are perceived as <u>black</u>.
<h3>What is light?</h3>
Light can be defined as a form of electromagnetic waves (radiation) that do not require any medium for its propagation. Thus, light is generally referred to as a visual signal because it can be seen with the eyes.
<h3>The wavelength of light.</h3>
Based on scientific records, the wavelengths of light that can be seen by humans with their eyes is between the range of 400 to 750 nanometers (nm).
According to the visible spectrum, we can deduce the following:
- Objects that absorb shorter wavelengths of light are perceived as <u>red</u>.
- Objects that absorb longer wavelengths are perceived as <u>blue</u>.
- Objects that reflect all wavelengths are perceived as <u>white</u>.
- Objects that absorb all wavelengths are perceived as <u>black</u>.
Read more on wavelength here: brainly.com/question/25699025
Answer:
<em>0.97c</em>
<em></em>
Explanation:
From the relativistic equation for length contraction, we have
= 
where
is the final length of the object
is the original length of the object before contraction
β = 
where v is the speed of the object
c is the speed of light in free space = 3 x 10^8 m/s
The equation can be re-written as
/
= 
For the length to contract to one-fourth of the proper length, then
/
= 1/4
substituting into the equation, we'll have
1/4 = 
substituting for β, we'll have
1/4 = 
squaring both side of the equation, we'll have
1/16 = 1 - 
= 1 - 1/16
= 15/16
square root both sides of the equation, we have
v/c = 0.968
v = <em>0.97c</em>