Question

suppose that the mass of earth becomes 4 times and the radius becomes 2 times so will there be any effect on our acceleration due to gravity? give reason


please answer​

Answer 1

Answer:

Moles of O

2

in bag A=

32

0.32

=0.01 mol

Same volume of unknown gas A will also have0.01 mol.

0.01 mol of known gas A weighs 0.26 g.

∴1 mol of unknown gas A=

0.01

0.26

=26 g

So, the molecular weight of known gas A=26 g.

Given, empirical formula =CH.

Therefore, the empirical formula weight =12+1=13 g.

n=

Empirical formula weight

Molecular formula weight

=

13

26

=2

Molecular formula =(CH)

2

=C

2

H

2

.

Answer 2

Answer:

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Explanation:

Case I: Let present mass of earth = M

present radius of earth =R

present acc. Due to gravity =g

present weight =W

mass =m

∴W=mg

and g=GMR2

Now M.=M+10% of =+M10=11M10

∴g.=GM.R2=GR2×11M10

=11GM10R2

∴g.g=11GM10R2×R2GM=1110

or g.=1110g

Multiplying both sides by m, we get

mg.=1110mg

or W.=1110W=1.1W

Thus our weight will become 1.1 times to our original weight.

Case II: R.=2R

∴g.=GMR.2=GM(2R)2=GM4R2

or g.=14g

Multiplying both sides by m, we get

mg.=14mg

or W.=14W

∴ Our weight will become one fourth of our original weight.

If Earth's mass is doubled without changing its size, your weight would