MCAT · Practice Sheet 17

1. 1.

   Physics

   Find the electrical power when 32 V drives a current of 5 A.

   Formula:Electrical Power

   $P = VI$

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2. 2.

   Physics

   Find the density of an object with mass 23 g and volume 38 cm³.

   Formula:Density

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

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3. 3.

   Physics

   Find the voltage across a 40 Ω resistor carrying a current of 1 A.

   Formula:Ohm's Law

   $V = IR$

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4. 4.

   Biology

   Calculate the BMI of a person weighing 51 kg with height 1.82 m.

   Formula:Body Mass Index

   $BMI = \dfrac{m}{h^{2}}$

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5. 5.

   Chemistry

   Find the pH of a solution with [H⁺] = 5×10⁻2 mol/L.

   Formula:pH of a Solution

   $pH = -\log_{10}[H^{+}]$

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6. 6.

   Physics

   Find the electrical power when 94 V drives a current of 13 A.

   Formula:Electrical Power

   $P = VI$

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7. 7.

   Physics

   Find the kinetic energy of a 11 kg object moving at 18 m/s.

   Formula:Kinetic Energy

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

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8. 8.

   Physics

   A body moving at 3 m/s accelerates at 4 m/s² for 2 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.

   Physics

   Find the kinetic energy of a 10 kg object moving at 11 m/s.

   Formula:Kinetic Energy

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

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10. 10.

    Physics

    Find the force required to accelerate a 12 kg mass at 6 m/s².

    Formula:Newton's Second Law (F = ma)

    $F = ma$

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11. 11.

    Physics

    Find the electrical power when 226 V drives a current of 13 A.

    Formula:Electrical Power

    $P = VI$

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12. 12.

    Physics

    An object starts at 19 m/s and accelerates at 4 m/s² for 2 s. Find its final velocity.

    Formula:Equation of Motion (v = u + at)

    $v = u + at$

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13. 13.

    Chemistry

    Find the molarity of a solution containing 1 mol of solute in 2.5 L of solution.

    Formula:Molarity

    $M = \dfrac{n}{V}$

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14. 14.

    Biology

    Calculate the BMI of a person weighing 91 kg with height 1.83 m.

    Formula:Body Mass Index

    $BMI = \dfrac{m}{h^{2}}$

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15. 15.

    Biology

    In a monohybrid cross (Aa × Aa) producing 24 F₂ offspring, how many are expected to show the dominant and the recessive phenotype (3:1 ratio)?

    Formula:Monohybrid Cross (3:1)

    $\text{Dominant}:\text{Recessive} = 3:1$

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16. 16.

    Chemistry

    Find the pressure of 2 mol of an ideal gas at 368 K in a 14 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

    Formula:Ideal Gas Law

    $PV = nRT$

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17. 17.

    Physics

    A constant force of 123 N moves an object 12 m in the direction of the force. Calculate the work done.

    Formula:Work Done

    $W = F\,d$

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18. 18.

    Physics

    A body moving at 9 m/s accelerates at 2 m/s² for 2 s. Find the distance travelled.

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

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

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19. 19.

    Physics

    An object starts at 5 m/s and accelerates at 6 m/s² for 4 s. Find its final velocity.

    Formula:Equation of Motion (v = u + at)

    $v = u + at$

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20. 20.

    Physics

    Calculate the potential energy of a 35 kg object at a height of 50 m (g = 9.8 m/s²).

    Formula:Gravitational Potential Energy

    $PE = mgh$

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