64
The pressure in a liquid
- A. is the same at all points in the liquid
- B. decreases with depth
- C. is the same in all directions at a given point
- D. is equal to the atmospheric pressure
65
A metal rod of density 7000 kgm-3 and cross-sectional area of 0.001257m2 has a mass of 1.76kg. Calculate its length.
- A. 0.20m
- B. 0.25m
- C. 0.40m
- D. 0.50m
66
The density P of a spherical ball of diameter d and mass m is given by
- A. P = \(\frac{3m}{4 \pi d^3}\)
- B. p = 4\(\pi md^3\)
- C. p = \(\frac{6m}{\pi d^3}\)
- D. p = \(\frac{3m}{2 \pi d^3}\)
67
Which of the following statements is not correct?
- A. molecules of ice, water and water vapour have equal intermolecular distances
- B. molecules of ice, water and water vapour do not differ in the structure of their molecules
- C. molecules of water vapour attract each other with forces far less than the forces of attraction between water molecules
- D. water is less compressible than water vapour