Answer:
A.
Explanation:
Passive margins have no trenches because they do not have any tectonic plate activity.
Explanation:
The shape may have been developed to represent the longevity of a relationship, but it's valued because the oval diamond can make one's fingers look longer and thinner.
Answer:
1. Savanna, 2. Portuguese, 3. Sahara Desert, 4. plateau, 5. Ethiopian Highlands
Explanation:
- Tropical savanna consists of broad grasslands which are dotted with small trees and shrubs of all types. These are home to diverse flora and fauna and sometimes the grasses can grow up to tall as elephants.
- Portuguese were the first Christian settlers of the eastern African coasts and these were to first take over the East African countries like Kenya, Indian ocean and Tanzania.
- Sahara desert is the world's largest dry and barren desert is outside the polar areas located in northern Africa. And covers a surface area of 3.5 miles.
- A flat landscape is called a plateau, if this is relatively high and flat then its table or a plateau.
- Etho[ian highlands are the rugged mountains that are located in the horn region of northeastern Africa. Having a height of 4,550 meters above sea level and is considered to the roof of the world.
Answer:
the answer is C
Explanation:
North and South America are in the Western Hemisphere. Antarctica is in both the Western & Eastern Hemispheres.
Answer:
Explanation:
For a satellite in orbit around a planet, the gravitational force between the planet and the satellite is equal to the centripetal force that keeps the satellite in circular motion.
So, we can write:
where
G is the gravitational constant
M is the mass of the planet
m is the mass of the satellite
r is the orbital radius of the satellite
v is the speed of the satellite
The equation can be rewritten as
Also, we can write the orbital speed as the ratio between the length of the orbit (circumference of the orbit) and orbital period, T:
Substituting into the equation for M,
Here we have:
is the orbital radius
is the orbital period
Substituting, we find the mass of the Saturn:
