Acceleration is zero if
1 answer:
You might be interested in
River shore is located at distance
speed of the woman is given as
now the time taken by the woman to cover the distance is
for the same time interval the dog will run to and fro with speed 4.5 m/s
so the total distance moved by the dog is given by
<em>so the total distance that dog will move is 7200 m or 7.2 km</em>
Answer:
Approximate linear dimension is 2 light years.
Explanation:
Radius of the spiral galaxy r = 62000 LY
Thickness of the galaxy h = 700 LY
Volume of the galaxy = πr²h
= (3.14)(62000)²(700)
= (3.14)(62)²(7)(10)⁸
= 84568×10⁸
= (LY)³
Since galaxy contains number of stars = 1078 billion stars ≈
Now volume covered by each star of the galaxy =
=
= 7.839 Light Years
Now the linear dimension across the volume
=
=
= 1.99 LY
≈ 2 Light Years
Therefore, approximate linear dimension is 2 light years.