![A reservoir 500m deep is filled with a fluid of density 850 kgm‾³. If the atmospheric pressure is 1.05 x 105 Nm‾²; the pressure at the bottom of the reservoir is. [g = 10ms‾²]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
by Sunday | Nov 11 | Physics JAMB
A. 4.72 x 106 Nm-2 B. 4.36 x 106 Nm-2 C. 4.28 x 106 Nm-2 D. 4.25 x 106 Nm-2 Correct Answer: Option D = 4.25 x 106 Nm-2 Explanation In general, pressure varies with depth in the relation p = lgh = 850 x 10 x 500 = 4250000 = 4.25 x...
by Sunday | Nov 10 | Physics JAMB
A. 60% B. 50% C. 40% D. 2% Correct Answer: Option B = 50% Explanation Efficiency = (M.A)/V.R X (100)/1 But M.A = (Load)/Effort = (1600)/800 = 2 Efficiency = (2)/4 x (100)/1 = 50%
by Sunday | Nov 10 | Physics JAMB
A. 3.50 x 10-10N. B. 3.71 X 10-8N. C. 3.57 x 10-2N. D. 4.00 x 102N. Correct Answer: Option B = 3.71 X 10-8N. Explanation The force of attraction between the two spheres is given by F (GM1 M2)/r2 = (6.67X 10-11 X5X10)/(0.3)2 = 3.71 X...
by Sunday | Nov 10 | Physics JAMB
A. 4.8 x 104 N B. 4.8 x 10³ N C. 1.2 x 10³ N D. 1.2 x 10² N Correct Answer: Option A = 4.8 x 104 N Explanation Centipetal force of the car = ma = (MV)²/r = (1500 x 40 x40)/50 = 48000 = 4.8 x 104 N
by Sunday | Nov 10 | Physics JAMB
A. 0.4π rads‾² B. 0.8π rads‾² C. 1.3π rads‾² D. 20.0π rads‾² Correct Answer: Option B = 0.8π rads‾² Explanation From the radiation: V = +at, and if it starts from N & T, U = 0 And for angular motion, W = O + at 4R = aχ5 ∴ a = (4a)/5 = 0. 8π...
by Sunday | Nov 10 | Physics JAMB
A. Nm‾¹ B. Nm‾² C. Nm D. Nm² Correct Answer: Option C = Nm Explanation The unit of a couple is Newton-meter (Nm)
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