Question

who is vijaydevraya ​

Answer 1

Answer:

Urea is the main nitrogenous waste in the human blood, through filtration is it removed from the blood. Explanation: Urea is the major nitrogenous waste in the humans. It's removed from the body via filtration in the kidneys, transport to temporary storage in the urinary blaThe reason why we only see ~118 elements is because we only see the ones stable enough to observe. Anything common in nature would need to have a half-life comparable to the age of the earth (or be produced as a decay product of something else that doesdder, and removal by urination.

Answer 2

Answer:

Let m and M be the masses of the earth and the sun respectively and v the speed of the earth in circular orbit. To keep the earth in circular orbit, the gravitational force

r

2

GMm

must balance the centripetal force

r

mv

2

, i.e.

r

2

GMm

=

r

mv

2

or M=

G

v

2

r

Also, v=

T

2πr

. Using this, we get M=

T

2

G

4π

2

r

3

or M∝

T

2

r

3

.