Differentiate between s-block and p-block
2 answers:
Answer:
The s-block elements are present on one side and the p-block elements are present on the opposite side of the periodic table and involve the filling of the s and p-orbitals respectively. The s-block consists of mostly metals whereas p-block consists of both metals and nonmetals. Now answer the statement.
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Answer:
Star A is closer than Star B
Explanation:
As we know that in parallax method of distance measurement the angle subtended by the star when it covers a distance of one Parsec arc length, it is known as parallax angle
Here we can say
so we have
so here we have
angle subtended by Star A = 1 arc sec
angle subtended by star B = 0.75 arc sec
now we have
distance for star A is given as
distance of star B is given as
So star A is closer than star B
Answer:
Explanation:
Height of the cliff is given as
now the time taken by the diver to hit the surface is given as
Now in the same time it has to cover a distance of 13.39 m
so the speed in horizontal direction is given as