Answer:
a) 147.95 Mpc
Explanation:
Using Hubble's formula
![v = H_od](https://tex.z-dn.net/?f=v%20%3D%20H_od)
where;
v = radical velocity
= Hubble's constant
d = distance
Given that:
The average radial velocity of galaxies in the Hercules cluster v = 10,800 km/s
Also using
= 73 km/s/ Mpc ; we make distance d the subject of the formula:
Then distance d can be written as:
![d = \frac{v}{H_o}](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7Bv%7D%7BH_o%7D)
![d = \frac{10,800 \ km/s}{73 \ km/s/Mpc}](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7B10%2C800%20%20%5C%20km%2Fs%7D%7B73%20%5C%20km%2Fs%2FMpc%7D)
d = 147.95 Mpc
b)
Now, if the Hubble constant had a smaller value, then for a given velocity the distance to the galaxy will increase because distance d is inversely proportional to
i.e
d ∝ ![\frac{1}{H_0}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7BH_0%7D)
Answer:
This explanation from Physics/Geometry
60o |
|
| Fy (the vert. comp.)
↑
← 30o |
Fx (the horizontal componenet)
F = √(Fx2 + Fy2)
Fy = 50 · cos 60o = 50 · (1/2) = 25 N
Fx = 50 · cos 30o = 50 · (√3)/2 = 25√3 N
I see, that vector sign did not appear in my comment above, so the vector equation is
→ → →
F = 50 cos 30o i + 50 cos 60o j
Explanation:
Answer:
h = 67.081 m
Explanation:
Given that,
The time taken by a person to fall down is, t = 2.2 s
The height of the cliff from the ground, h = ?
The distance that the person will fall through the time is given by the formula
S = 1/2 gt² m
Where,
g - acceleration due to gravity
Substituting the values in the above equation
S = 1/2 x 9.8 m/s² x (3.7 s)²
= 67.081 m
Therefore, the height of the cliff from the ground is, h = 67.081 m
Realtor does all of the above items
Answer:
African grey birds are not only really smart, they are helpful too. They are the first bird species to pass a test that requires them both to understand when another animal needs help and to actually give assistance.
which i think is pretty awesome and when they meet a person they start the boding process and their really sweet and kind at first but anyways
its true