Question

कैलकुलेट फोर्स आफ ग्रेविटेशन ब्लूटूथ ऑन अब बोल ऑफ 1kg मास लाइन ऑन द ग्राउंड मास ऑफ द अर्थ इज 6 * 10 की पावर 4 केजी रेडियस 6 पॉइंट 4 * 10 की पावर 3 किलोमीटर​

Answer 1

Explanation:

Assertion :Gold is not alloyed. Reason : Pure gold has a high melting point and is very soft. Thus, the ornaments made from it do not keep their shape. * (a) Both A and R are true and R is correct explanation of the assertion. (b) Both A and R are true but R is not the correct explanation of the assertion. (c) A is true but R is false. (d) A is false but R is true

Answer 2

Explanation:

Gravitational force between earth and ball,

=

R

2

GMm

[Neglecting the radius of ball as it is small]

=

(6400×10

3

)

2

6.67×10

−11

×6×10

24

×1

=

10

10

9.77×10

−3

×10

−11

×10

29

=9.77N

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