Kolkata (formerly Calcutta) is the capital of India's West Bengal state. So it is located in India.
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Answer:
Explanation:
1) We lived int he 1720s. We are a hunting and gathering tribe.
2) We lived in near mountain terrain and near forests. Its dry and rocky. And cold in winter and hot in summer.
3) men women and children. Awe have 24,890 women, 56,789 men And 13,896 children. We wore animal skin.
4) we are nomadic. We gather and hunt. Both. Berries, rabbits, and deer.
5) we slept in tents. We cooked outside. We bathed in rivers and lakes.
6) it does not have a name
7) we gaint he animals trust and train them to help us hunt and sniff for berry bushes. We feed the animals berries and meat.
8) Our tribe uses bows and arrows, spears, and axes for hunting. We use our hands and rocks for harvesting and digging.
9) There are times we are hungry in the winter mostly.
10) no
Answer:
Porosity
Explanation:
Porosity is defined as the total percentage of pore spaces that are present within a rock. These spaces are found between the rock particles and fractures and are mostly filled with fluid mixture or water. It is the ratio between the total pore space in a rock to the total volume of the rock. It is mainly calculated in terms of percentage.
Porosity is directly affected by sorting. Well-sorted rocks indicate high porosity but poorly-sorted rocks indicate low porosity. Some of the examples of rocks exhibiting high porosity are limestone, shale, and sandstone. Rocks with low porosity include granite and mudstone.
Comets are cosmic snowballs of frozen gases, rock and dirt that orbit the Sun. once frozen, they're the dimensions of a small city. when a comet's orbit brings it about to the Sun, it heats up and spews dirt and gases into an enormous glowing head larger than most planets.
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We need to assume that the orbits are circular; this is a very good approximation and do not hesitate to adopt it. We need then to consider the basic equation of circular motion that relates centripetal acceleration, angular velocity, mass, radius and force:
![F=m*v^2*r](https://tex.z-dn.net/?f=F%3Dm%2Av%5E2%2Ar)
. We also have the basic equation of Newton, F=ma. By checking, we see that for each planet we have that a=v^2*r where v is the angular velocity. v=
![\frac{2\pi}{T}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%5Cpi%7D%7BT%7D%20)
where T is the orbital period, hence we have that a=
![\frac{4\pi^2*r}{T^2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%5Cpi%5E2%2Ar%7D%7BT%5E2%7D%20)
. Denote with the index 1 the Earth case and with 2 the Mars case. We have then that
![\frac{a_1}{a_2} = \frac{4 \pi^2*r_{1}*T_2^2}{4 \pi^2*r_{2}*T_1^ 2}](https://tex.z-dn.net/?f=%20%5Cfrac%7Ba_1%7D%7Ba_2%7D%20%3D%20%5Cfrac%7B4%20%5Cpi%5E2%2Ar_%7B1%7D%2AT_2%5E2%7D%7B4%20%5Cpi%5E2%2Ar_%7B2%7D%2AT_1%5E%202%7D)
. Substituting the known values in a calculator, we get the result: the centripetal acceleration of earth is 2.32 times greater than that of Mars.