3 years ago

PLEASE PLEASE HELP PICTURE INCLUDED

Physics

1 answer:

Marianna [84]3 years ago

5 0

Answer:

a is the answer

Explanation:

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distant galaxy emits light that has a wavelength of 434.1 nm. On earth, the wavelength of this light is measured to be 438.6 nm.

a_sh-v [17]

Answer:

The speed of the galaxy relative to the Earth is $3.09\times 10^6\ m/s$ .

Explanation:

We have,

(a) Wavelength emitted by light at distant galaxy is 434.1 nm. On earth, the wavelength of this light is measured to be 438.6 nm. It can be seen that the wavelength of light reduces as it reaches Earth. It is called Red shift. As per Doppler's effect, we can say that the galaxy is receding from the Earth.

(b) Let v is the speed of the galaxy relative to the Earth. It can be given by :

$v=c(\dfrac{\lambda'}{\lambda}-1)\\\\v=3\times 10^8\times (\dfrac{438.6 }{434.1 }-1)\\\\v=3\times 10^8\times (\dfrac{438.6}{434.1}-1)\\\\v=0.0103\cdot3\cdot10^{8}\\\\v=3.09\times 10^6\ m/s$

So, the speed of the galaxy relative to the Earth is $3.09\times 10^6\ m/s$ .

4 0

3 years ago

Which of these will NOT help reduce c02 levels in the atmosphere?

denpristay [2]

Answer:

the answer would be "using more heat" btw

Explanation:

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2 years ago

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much

vlada-n [284]

<span>W=98*1.49/9.8 N
</span>soo <span>14.9 Newtons</span>

5 0

4 years ago

Read 2 more answers

A soda has a volume of 560 mL and a density of 3.2 g/mL. What is the mass?

kolbaska11 [484]

The correct answer is: 1792g or 1800g.

(When you round it)

8 0

4 years ago

I need help ASAP please :)

rusak2 [61]

Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).

M = V d

M = 1.4 * 2 = 2.8 kg

7 0

3 years ago