It is (A) for the first one and (B) for the second one.
Answer:
option A,B and C
Explanation:
Pangaea is known as the supercontinent which existed during the late Paleozoic and early Mesozoic eras.
Later Pangaea disintegrates into large landmass. Most of the continent include the landmass of Pangaea.
Rates of seafloor spreading in the Atlantic Ocean are known about the breakup of Pangaea.
The Appalachian Mountains are remnants of Pangaea's formation.
Hence, the correct answer is option A,B and C
Answer:
The linear density of the wire is 0.314 g/m.
Explanation:
It is given that,
Acceleration,
Mass of the ball, m = 112 gm
Speed of the transverse wave, v = 44.4 m/s
The speed of the transverse wave is given by :
Where
T = tension in the wire
= mass per unit length
or
So, the linear density of the wire is 0.314 g/m. Hence, this is the required solution.
Answer:
twelve facesFrom left to right the solids are tetrahedron (four sides), cube (six sides), octahedron (eight faces), dodecahedron (twelve faces), and icosahedron (twenty faces).
Explanation:
Ayo hope you enjoy
Answer:
Physical Properties of Carbon:
Carbon is a unique element. It occurs in many forms. Some examples of the pure form of carbon are coal and soot.
It is soft and dull grey or black in colour.
One of the most important compounds of carbon is the charcoal, which is formed when carbon is heated in the absence in of air.
It occurs in a number of allotropic forms. Allotropes are nothing but forms of an element with varying physical as well as chemical properties.
The density of the different forms of carbon depends upon the origin of these elements. You will find some forms of carbon which are pure and some forms which are not pure like coal which is the mixture of both carbon and hydrogen.
Chemical Properties of Carbon
Carbon compounds generally show 4 reactions, they are
Combustion reaction
Oxidation reaction,
Addition reactions
Substitution reaction.
As we all know that carbon in all forms needs oxygen, heat, and light and forms carbon dioxide. When it is burned in air to give carbon dioxide, it is called as combustion.
Let us get the concept of this using some examples when it is burnt in the air: When methane CH4 is burnt in the presence of oxygen it gives us carbon dioxide, heat, and light.
Explanation: