All categories

2 years ago

In 1929 Edwin Hubble used a telescope to discover the movement of galaxies. True or false

Physics

2 answers:

Zigmanuir [339]2 years ago

8 0

this statement is true Edwin Hubble did discover the movement of Galaxies

larisa86 [58]2 years ago

4 0

Explanation :

Edwin Hubble used a telescope to discover the movement of galaxies in 1929. He was an American Astronomer.

The telescope invented by him is called a Hubble telescope. It has a 2.4-meter mirror.

He gives the relation between the distance to a galaxy and its recessional velocity. This is known as the Hubble law. The relation is as follows :

$v=H_0\ r$

where,

$v$ is recessional velocity.

$H_0$ is Hubble constant.

$r$ is distance.

<em>So, the given statement is True.</em>

You might be interested in

Name the four phases of the lunar cycle

Serggg [28]

Answer:

Hello there!

This is a picture that helped me learn the phases in an easy way. I hope it helps you too.

Explanation:

4 0

3 years ago

Thường ngày an đi bộ từ nhà đến trường mất 15 phút biết quãng đường từ nhà đến trường dài 1.5 km tính vận tốc đi thường ngày của

DedPeter [7]

Answer:

Speed in kilometer/hour = 6 kilometer / hour

Explanation:

Given;

Time taken to cover distance = 15 minute = 15 /60 = 0.25 hour

Distance of school = 1.5 kilometer

Find:

Speed in kilometer/hour

Computation:

Speed in kilometer/hour = Distance / Time

Speed in kilometer/hour = Distance of school / Time taken to cover distance

Speed in kilometer/hour = 1.5 / 0.25

Speed in kilometer/hour = 6 kilometer / hour

7 0

2 years ago

The mass of the Mars is about 0.11 the mass of the earth, its radius is 0.53 that of the earth, and the acceleration due to grav

pishuonlain [190]

Answer:

$3.8377m/s^2$

Explanation:

The force due to gravity on earth's surface on mass $m$ is:

$F=GMm/R^2$

Where,

F = GMm/R2

F = Gravitational Force

G = Gravitational Constant

M = Earth's Mass

m = mass of body

R = Earth's radius

The acceleration is F/m:

$g=F/m=GM/R^2$

For a planet with 0.11M and 0.53R:

$a=G(0.11M)/(0.53R)^2\\=0.3915g\ \ \ \ \ \ \g=9.8m/s^2\\=0.3915\times9.8m/s^2\\\\=3.8377m/s^2$

Hence gravity on Mar's surface is 3.8377 $m/s^2$

4 0

3 years ago

The form of energy most responsible for producing sunlight is

Murljashka [212]

Answer:

nuclear energy

Explanation:

6 0

2 years ago

Identify two physical quantities, whose direction match with direction of force?

madam [21]

Answer:

The answer is (Base quantities or fundamental quantities) and (Derived quantities).

Explanation:

hope it helps.

6 0

3 years ago