Practice Pakistan questions with answers and explanations.
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The pressure is 100/0.01 = 10,000 Pa.
Output force is 10,000×0.20 = 2000 N.
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The degree will be completed before a stated future deadline.
The future perfect is used for such completion.
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'Yesterday' is a definite finished past time.
The simple past is required rather than the present perfect.
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Potential energy change is mgh.
5×10×8 = 400 J.
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Rotational dynamics gives τ=Iα.
τ=3×4 = 12 N·m.
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Power is work divided by time.
P=600/3 = 200 W.
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Opposing torques subtract.
The net magnitude is 15-9 = 6 N·m.
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Energy transferred is Pt.
1000×20 = 20,000 J.
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Density measures how much mass is contained in a given volume.
Its SI unit is kg/m³.
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Net work equals the change in kinetic energy.
Kf=20+80 = 100 J.
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Pressure describes how force is distributed over a surface.
Its SI unit is the pascal.
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ΔK=½m(v²-u²).
With m=2, ΔK=49-9 = 40 J.
