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nata0808 [166]
3 years ago
11

Can vectors be strung together?

Physics
1 answer:
lidiya [134]3 years ago
4 0

Answer:

The head-to-tail method is a graphical way to add vectors, The tail of the vector is the starting point of the vector, and the head (or tip) of a vector is the final, pointed end of the arrow.

Explanation:

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Which phrase describes an atom?
kiruha [24]

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

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3 years ago
7. What is another name for the force of
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Weight because both gravity and weight are pulling an object down
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Food and oxygen.......
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Objects that absorb shorter wavelengths of light are perceived as ______, those that absorb longer wavelengths are perceived as
miss Akunina [59]

According to the visible spectrum, we can deduce the following:

  1. Objects that absorb shorter wavelengths of light are perceived as <u>red</u>.
  2. Objects that absorb longer wavelengths are perceived as <u>blue</u>.
  3. Objects that reflect all wavelengths are perceived as <u>white</u>.
  4. 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:

  1. Objects that absorb shorter wavelengths of light are perceived as <u>red</u>.
  2. Objects that absorb longer wavelengths are perceived as <u>blue</u>.
  3. Objects that reflect all wavelengths are perceived as <u>white</u>.
  4. Objects that absorb all wavelengths are perceived as <u>black</u>.

Read more on wavelength here: brainly.com/question/25699025

4 0
2 years ago
How fast must an object move before its length appears to be contracted to one-fourth its proper length? (Give your answer in te
Tresset [83]

Answer:

<em>0.97c</em>

<em></em>

Explanation:

From the relativistic equation for length contraction, we have

l = l_{0}\sqrt{1 - \beta }

where

l is the final length of the object

l_{0} is the original length of the object before contraction

β = v^{2} /c^2

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

l/l_{0} = \sqrt{1 - \beta }

For the length to contract to one-fourth of the proper length, then

l/l_{0} = 1/4

substituting into the equation, we'll have

1/4 = \sqrt{1 - \beta }

substituting for β, we'll have

1/4 = \sqrt{1 - v^2/c^2 }

squaring both side of the equation, we'll have

1/16 = 1 - v^2/c^2

v^2/c^2 = 1 - 1/16

v^2/c^2 = 15/16

square root both sides of the equation, we have

v/c = 0.968

v = <em>0.97c</em>

3 0
3 years ago
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