A solid of weight 22 N is dipped in water.If the weight of the solid in water is 20 N,what is the relative density of the solid ?
2
5
11
14
An apple falls towards the earth because the earth attracts it.The apple also attracts the earth by the same force.Why do we not see the earth rising towards the apple?
Acceleration of the earth is very large when compared to that of apple
Acceleration of the earth is equal to that of apple
Acceleration of the earth is neither high nor too low
Acceleration of the earth is very small when compared to that of apple
For a freely falling body (falling vertically down wards) 'g' is
Negative
Positive
Zero
None of these
If the masses of both the object are doubled, the gravitational force of attraction is
Doubled
Halved
Becomes 4times
Becomes (1/4)th
The density of copper is 8.9 g cm-3.Calculate the relative density of copper.
9.8
8.9
7.5
1
S.I unit of weight is:
kg
N
N/kg
N/m
S.I unit of pressure is
pascal
torr
tesla
bar
The weight of a body of mass 5 kg is
69.0 N
79.0 N
49.0 N
39.0 N
According to Kepler's Laws of Planetary Motion :
r2 α T3
r α T2
r3 α T2
r3 α 1/ T2
If the distance between two objects is halved ,then the gravitational force of attraction is
4 times
Becomes(1/4)th
