Tectonics is a science that studies tectonic plates. Earth's surface is made of many tectonic plates which move relative to each other. This movement causes earthquakes and can lead to forming a mountain or change in environment.
To determine if Moon has tectonic plates scientists observed Moon's surface for a long time. They were searching for a change in height of a mountins or any changes in surface. If they found this it would mean that Moon has tectonic plates just the Earth does. Only changes they observed were those created by meteorites.
Definitive confirmation that Moon does not have tectonic plates came when people landed on it. Scientific equipment they brought and later the rover that were sent confirmed there are no moonquakes and this led to a conclusion that there are no tectonic plates.
To solve this problem we will use the linear motion description kinematic equations. We will proceed to analyze the general case by which the analysis is taken for the second car and the tenth. So we have to:
Where,
x= Displacement
= Initial velocity
a = Acceleration
t = time
Since there is no initial velocity, the same equation can be transformed in terms of length and time as:
For the second cart
When the tenth car is aligned the length will be 9 times the initial therefore:
When the tenth car has passed the length will be 10 times the initial therefore:
The difference in time taken from the second car to pass it is 5 seconds, therefore:
From the first equation replacing it in the second one we will have that the relationship of the two times is equivalent to:
From the relationship when the car has passed and the time difference we will have to:
Replacing the value found in the equation given for the second car equation we have to:
Finally we will have the time when the cars are aligned is
The time when you have passed it would be:
The difference between the two times would be:
Therefore the correct answer is C.
In the given problem, explain why the types of technology valued varies
from location to location.
There are a lot of factors that could determine the evolvement of
technology from a certain place or location:
1. Resources. One is resources and its
availability is one crucial factor.
2. Accessibility. Other areas are
fairly secluded from industrialization and urbanization.
3. People and culture. Humans are the
resources that determines the flow of technology if they want it or not in
their area.
Answer:
Average velocity is 0.296 m/s.
Average speed is 4.0 m/s.
Explanation:
Given:
Distance of the circular track is,
Number of laps ran is,
Time taken for the run is,
Now, total distance covered in 5.4 laps =
Also, since the path is a circle, the final position of the athlete after 5.4 laps will be 0.4 of 400 m ahead of the starting point.
Distance covered in 0.4 laps is,
Therefore, the displacement of the athlete will be 160 m as the athlete is 160 m ahead of the starting point and displacement depends on the initial and final points only.
Now, average velocity is given as:
Average speed is the ratio of total distance covered to total time taken.
So, average speed =
Answer:
The correct answer is ii) It must revolve around a star
Explanation:
For a celestial body to be called a planet, it must meet at least three characteristics
* rotate around a star
* its mass must be sufficient to maintain hydrostatic equilibrium
* have control over its orbital that is to say to prevent that other body is in its same orbital
if we check the different proportions
i) False. Most of the planets are spheres deformed by their rotation on themselves and around the star
ii) True. It is in accordance with the minimum characteristics of the plants
iii) False .. the orbit of the planet can be elliptical and the speed changes at each point for this at a different distance from the star that is in a focus of the ellipse.
The correct answer is ii) It must revolve around a star