Police & Armed Forces · Practice Sheet 31

1. 1.

   Quantitative Aptitude

   Find the simple interest on AED 26,000 at 4% per annum for 1 year(s).

   Formula:Simple Interest

   $SI = \dfrac{P\times R\times T}{100}$

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2. 2.

   Physics

   If 4,418 J of work is done in 36 s, find the power.

   Formula:Power

   $P = \dfrac{W}{t}$

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3. 3.

   Physics

   Find the kinetic energy of a 12 kg object moving at 10 m/s.

   Formula:Kinetic Energy

   $KE = \tfrac{1}{2}mv^{2}$

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4. 4.

   Physics

   If 608 J of work is done in 50 s, find the power.

   Formula:Power

   $P = \dfrac{W}{t}$

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5. 5.

   Physics

   A force of 307 N acts on an area of 22 m². Find the pressure.

   Formula:Pressure

   $P = \dfrac{F}{A}$

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6. 6.

   Quantitative Aptitude

   What is 10% of 880?

   Formula:Percentage of a Number

   $\text{Value} = \dfrac{P}{100}\times N$

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7. 7.

   Quantitative Aptitude

   The marked price of an item is AED 1,300. After a 5% discount, find the selling price.

   Formula:Discount & Selling Price

   $SP = MP\left(1-\dfrac{d}{100}\right)$

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8. 8.

   Physics

   A body moving at 13 m/s accelerates at 1 m/s² for 8 s. Find the distance travelled.

   Formula:Equation of Motion (s = ut + ½at²)

   $s = ut + \tfrac{1}{2}at^{2}$

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9. 9.

   Quantitative Aptitude

   The marked price of an item is AED 500. After a 15% discount, find the selling price.

   Formula:Discount & Selling Price

   $SP = MP\left(1-\dfrac{d}{100}\right)$

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10. 10.

    Quantitative Aptitude

    Find the simple interest on AED 44,000 at 8% per annum for 1 year(s).

    Formula:Simple Interest

    $SI = \dfrac{P\times R\times T}{100}$

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11. 11.

    Physics

    Find the electrical power when 191 V drives a current of 16 A.

    Formula:Electrical Power

    $P = VI$

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12. 12.

    Physics

    If 2,194 J of work is done in 39 s, find the power.

    Formula:Power

    $P = \dfrac{W}{t}$

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13. 13.

    Physics

    Calculate the potential energy of a 20 kg object at a height of 21 m (g = 9.8 m/s²).

    Formula:Gravitational Potential Energy

    $PE = mgh$

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14. 14.

    Quantitative Aptitude

    A vehicle covers 165 km in 3 hours. Find its average speed.

    Formula:Speed, Distance & Time

    $\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

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15. 15.

    Physics

    A force of 956 N acts on an area of 19 m². Find the pressure.

    Formula:Pressure

    $P = \dfrac{F}{A}$

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16. 16.

    Physics

    Find the density of an object with mass 218 g and volume 47 cm³.

    Formula:Density

    $\rho = \dfrac{m}{V}$

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17. 17.

    Physics

    Calculate the potential energy of a 13 kg object at a height of 22 m (g = 9.8 m/s²).

    Formula:Gravitational Potential Energy

    $PE = mgh$

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18. 18.

    Physics

    If 4,236 J of work is done in 29 s, find the power.

    Formula:Power

    $P = \dfrac{W}{t}$

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19. 19.

    Quantitative Aptitude

    A invests AED 5,000 and B invests AED 9,000 for the same period. If the total profit is AED 17,000, find A's share.

    Formula:Partnership (profit share)

    $\text{Share}_A = \text{Profit}\times\dfrac{A}{A+B}$

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20. 20.

    Physics

    Find the momentum of a 45 kg body moving at 21 m/s.

    Formula:Linear Momentum

    $p = mv$

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