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Lelechka [254]
3 years ago
6

A star has a spectrum shift exhibiting a red shift. What can you conclude about the distance from earth to that star

Physics
2 answers:
Akimi4 [234]3 years ago
6 0
Red shift in the spectrum of a star is always taken to mean that the source of the light is moving away from us.

That's the whole basis for the notion of the expanding universe, since we don't know of any other mechanism that can shift light toward longer wavelengths.
sergejj [24]3 years ago
5 0
Its going away cuz red shift goes away (somehow i think of hell so think that u wanna go away from it)
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1000 millicoulombs of charge passes through a point. The amount of current passing through the point is
Rzqust [24]

The amount of current passing through the point is 1 A

The amount of current passing through the point can be calculated using the formula below.

⇒ Formula:

  • Q = i/t......................... Equation 1

⇒ Where:

  • Q = Charge
  • i = current
  • t = time.

⇒ Make "i" the subject of the equation.

  • i = Qt....................... Equation 2

From the question,

⇒ Given:

  • Q = 1000 millicoulombs = 1 coulombs
  • t = 1 seconds. (Assuming the time is 1 seconds)

⇒ Substitute these values into equation 2

  • i = 1/1
  • i = 1 A.

Hence, The amount of current passing through the point is 1 A.

Learn more about charges here: brainly.com/question/4158552

3 0
2 years ago
determine the force of gravitational attraction between a 78kg boy sitting 2 meters away from a 65kg girl.
bixtya [17]

Answer:

F=8.45\times 10^{-8}\ N

Explanation:

Given that,

Mass of a boy is 78 kg

Mass of a girl is 65 kg

We need to find the force of gravitational attraction between them if they are 2 m away.

The formula for the gravitational force is given by :

F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 78\times 65}{(2)^2}\\\\=8.45\times 10^{-8}\ N

So, the force between them is 8.45\times 10^{-8}\ N.

8 0
3 years ago
a car is traveling at velocity of 15m/s.it accelerates to a velocity 35m/s in 10s calculate the acceleration? ​
vlada-n [284]

Answer:

2m/s is acceleration I hope it helps you

3 0
3 years ago
Read 2 more answers
Individual pyrrole molecules readily join together into larger molecules called polypyrroles. If polypyrroles form from pyrrole
konstantin123 [22]
<h2>Hey there!</h2>

<h2>I guess the correct option is:</h2>

<h3>"(A) Polypyrroles had already formed on or in the zeolite before it was submerged."</h3>

<h2>Hope it help you</h2>
4 0
2 years ago
Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.50 W/m2. If a radar unit leaks 10.0
sp2606 [1]

Answer:

  r = 0.728 m

Explanation:

The intensity is defined as the ratio between the power per unit area

       I = P / A

Where A is the area of ​​the sphere where the wave is

      A = 4π r²

In this exercise we are given the power of the P = 10.0 W micro waves, the safe intensity    I₁ = 1.5 W / m²

      A₁ = P / I₁

Calculate      

      A₁ = 10.0 / 1.5

     A₁ = 6.6667 m²

Let's clear the radius of the sphere

      r = √ A / 4π

      r = √ (6.6667 / 4π)

      r = 0.728 m

7 0
3 years ago
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