MCAT · Practice Sheet 49

1. 1.

   Physics

   Find the voltage across a 33 Ω resistor carrying a current of 17 A.

   Formula:Ohm's Law

   $V = IR$

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2. 2.

   Physics

   Calculate the potential energy of a 7 kg object at a height of 23 m (g = 9.8 m/s²).

   Formula:Gravitational Potential Energy

   $PE = mgh$

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3. 3.

   Biology

   Calculate the BMI of a person weighing 53 kg with height 1.77 m.

   Formula:Body Mass Index

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

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4. 4.

   Chemistry

   How many moles are present in 234 g of sodium chloride (NaCl) (molar mass = 58.5 g/mol)?

   Formula:Number of Moles

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

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5. 5.

   Physics

   Find the voltage across a 50 Ω resistor carrying a current of 1 A.

   Formula:Ohm's Law

   $V = IR$

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6. 6.

   Biology

   Calculate the BMI of a person weighing 96 kg with height 1.88 m.

   Formula:Body Mass Index

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

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7. 7.

   Physics

   Find the momentum of a 29 kg body moving at 35 m/s.

   Formula:Linear Momentum

   $p = mv$

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8. 8.

   Physics

   Calculate the potential energy of a 42 kg object at a height of 2 m (g = 9.8 m/s²).

   Formula:Gravitational Potential Energy

   $PE = mgh$

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9. 9.

   Physics

   Find the voltage across a 26 Ω resistor carrying a current of 5 A.

   Formula:Ohm's Law

   $V = IR$

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10. 10.

    Physics

    A constant force of 76 N moves an object 3 m in the direction of the force. Calculate the work done.

    Formula:Work Done

    $W = F\,d$

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11. 11.

    Physics

    Find the force required to accelerate a 43 kg mass at 4 m/s².

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

    $F = ma$

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12. 12.

    Chemistry

    Find the pH of a solution with [H⁺] = 1×10⁻4 mol/L.

    Formula:pH of a Solution

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

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13. 13.

    Chemistry

    25 mL of a 10 M solution is diluted to 208 mL. Find the new concentration.

    Formula:Dilution

    $M_1V_1 = M_2V_2$

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14. 14.

    Chemistry

    Find the pressure of 3 mol of an ideal gas at 368 K in a 13 L container (R = 0.0821 L·atm·mol⁻¹·K⁻¹).

    Formula:Ideal Gas Law

    $PV = nRT$

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15. 15.

    Biology

    Calculate the BMI of a person weighing 45 kg with height 1.83 m.

    Formula:Body Mass Index

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

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16. 16.

    Chemistry

    59 mL of a 10 M solution is diluted to 259 mL. Find the new concentration.

    Formula:Dilution

    $M_1V_1 = M_2V_2$

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17. 17.

    Biology

    Calculate the BMI of a person weighing 78 kg with height 1.88 m.

    Formula:Body Mass Index

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

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18. 18.

    Biology

    In a monohybrid cross (Aa × Aa) producing 136 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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19. 19.

    Physics

    Find the kinetic energy of a 8 kg object moving at 24 m/s.

    Formula:Kinetic Energy

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

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20. 20.

    Biology

    In a population at Hardy–Weinberg equilibrium, the recessive allele frequency q = 0.4. Find the dominant allele frequency p and the percentage of heterozygous carriers.

    Formula:Hardy–Weinberg Equilibrium

    $p + q = 1,\;\; 2pq = \text{carriers}$

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