Answer:
1.The Sun is located at one of the foci of the planets' elliptical orbits.
2.The path of the planets around the Sun is elliptical in shape.
Explanation:
As per Kepler's law of planet motion we know that all planets revolve around the sun in elliptical path in such a way that position of Sun must be at one of the focii of the path
So all planets are in elliptical path always
Position of sun is always at one of the focus
so correct answer will be
1.The Sun is located at one of the foci of the planets' elliptical orbits.
2.The path of the planets around the Sun is elliptical in shape.
Answer:
![ucosφ=-v2cosθ2\\\\φ=cos^{-1} (\frac{-v2cosθ2}{cosφ} )](https://tex.z-dn.net/?f=ucos%CF%86%3D-v2cos%CE%B82%5C%5C%5C%5C%CF%86%3Dcos%5E%7B-1%7D%20%28%5Cfrac%7B-v2cos%CE%B82%7D%7Bcos%CF%86%7D%20%29)
Explanation:
Two identical sticky masses m are moving in the xy-plane, with their momenta at an angle of φ with one another. They are each moving at the same speed v when they collide at the origin of the coordinates and stick together. After the collision, the masses move at an angle −θ2 with respect to the +x axis at speed v2 .1. What was the angle φ?
from the principle of momentum
In a system of colliding bodies,we know that the total momentum before collision will equal to the total momentum after collision.
Take note that momentum is the product of mass and velocity
momentum before collision=momentum after collision
mass, m
u=initial velocity of the identical masses
v2=the common velocity after the collision
Note that the collision is inelastic , since they both moved with the same velocity
umcosφ+umcosφ=(m+m)v2cos−θ2
2mucosφ=2mv2cos−θ2
![ucosφ=-v2cosθ2\\\\φ=cos^{-1} (\frac{-v2cosθ2}{cosφ} )](https://tex.z-dn.net/?f=ucos%CF%86%3D-v2cos%CE%B82%5C%5C%5C%5C%3C%2Fp%3E%3Cp%3E%CF%86%3Dcos%5E%7B-1%7D%20%28%5Cfrac%7B-v2cos%CE%B82%7D%7Bcos%CF%86%7D%20%29)
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.
They are formed by cooling 0f molten magna on Earth's surface.