Investigation, examination, inquiry, research express the idea of an active effort to find out something. An investigation is a systematic, minute, and thorough attempt to learn the facts about something complex or hidden; it is often formal and official: an investigation of a bank failure.
When you see a tall, young, skinny man walking along the beach, you
observe that a tall, young, skinny man walked along the beach, and from
your observation, you know that a tall, young, skinny man walked along
the beach.
When you see a beach with nobody there, but there is a line of 5-toed
footprints in the sand along the beach, you infer that a human being
walked along the beach. If you are a skilled anthropologist, with some
talent and experience in a few other fields whose names escape me at
the moment, you might be able to make some careful measurements of
the length, width, depth, and shape of the footprints, and then you might
be able to infer that the person who walked along the beach was a tall,
young, skinny man. You would build all of your information from inference,
without any observations at all except for the line of footprints and your
measurements of them.
Answer:
A horizontal line means the object is not changing its position - it is not moving, it is at rest. • A downward sloping line means the object is returning to the start. SPEED-TIME GRAPHS. Speed-Time graphs are also called Velocity Time graphs.
Explanation:
Answer:
a. The Sun is 110.24 cm.
b. The distance of the nearest star at 4.24 light years is 3.1586 ×
cm.
Explanation:
Given a scale :
12700 Km : 1 cm
a. How large is the Sun of diameter 1.4 ×
Km?
Thus using the given scale, we have to compare the diameter of the Sun to that of the Earth.
= ![\frac{1.4*10^{6} }{12700}](https://tex.z-dn.net/?f=%5Cfrac%7B1.4%2A10%5E%7B6%7D%20%7D%7B12700%7D)
= 110.2362
The Sun is 110.24 cm.
b. how far away is the nearest star at a distance of 4.24 light-years on this scale?
A light year is a term that is used to express the total distance that light would travel in an empty space in a year.
One light year = 9.461 ×
Km
So that,
4.24 light years = 4.24 × 9.461 ×
Km
= 40.11464 ×
Km
Using the given scale,
![\frac{40.11464*10^{12} }{12700}](https://tex.z-dn.net/?f=%5Cfrac%7B40.11464%2A10%5E%7B12%7D%20%7D%7B12700%7D)
= 3.1586 × ![10^{9}](https://tex.z-dn.net/?f=10%5E%7B9%7D)
The distance of the nearest star at 4.24 light years is 3.1586 ×
cm.