i and ii only
i and iii only
ii and iii only
i, ii and iii
Correct answer is A
No explanation has been provided for this answer.
5.20 x 102 kg m-3
1.13 x 103 kg m-3
8.80 x 102 kg m-3
5.20 x 102 kg m-3
Correct answer is D
\(V_T = 5m^3, m_1 = 2 \times 1 \times 10^3 = 2 \times 10^3\)
\(M_2 = 3 \times 8 \times 10^3 = 24 \times 10^3\)
MT = 26 x 103
D = \(\frac{m}{v} = \frac{26 \times 10^3}{5} = 5.2 \times 10^3\)
Which of the following physical quantities is correctly paired with it's corresponding S.I unit?
density[kg m3]
power[Js-1]
specific latent heat [J kg-1K-1]
Pressure [Nm-1]
Correct answer is B
No explanation has been provided for this answer.
Which of the following observations is not an effect of surface tension?
droplets of water dripping slowly from a tap
mercury spilled on a clean glass plate forms spherical droplets
an insect walking across the surface of a pond
water flowing out more easily than engine oil from a container
Correct answer is D
No explanation has been provided for this answer.
Determine the magnitude of P in the diagram above
16N
20N
32N
40N
Correct answer is C
X = 50 sin30 = 30 x 0.5 = 25cm
40 x 20 = p x 25
p = \(\frac{40 \times 20}{25}\)
= 32N
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