Course Introduction
Physics for Engineers
Final Exam Questions
Physics for Engineers is designed to introduce engineering students to the fundamental concepts and principles of physics that are essential for understanding and solving engineering problems. The course covers key topics such as mechanics, thermodynamics, electromagnetism, waves, and optics, with a strong emphasis on their real-world applications in various engineering fields. Through a combination of theoretical explanations, problem-solving exercises, and laboratory experiments, students develop analytical skills and a solid foundation in physical sciences, enabling them to approach engineering challenges with a scientific perspective.
Recommended Textbook Physics 10th Edition by John D. Cutnell
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Page 2
Chapter 11: Fluids
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Sample Questions
Q1) At standard temperature and pressure,carbon dioxide has a density of 1.98 kg/m³.What volume does 1.70 kg of carbon dioxide occupy at standard temperature and pressure?
A)0.43 m³
B)0.86 m³
C)1.7 m³
D)2.3 m³
E)4.8 m³
Answer: B
Q2) Which one of the following statements concerning fluid streamlines is true?
A)In steady flow,streamlines must remain parallel and equally spaced.
B)In turbulent flow,two or more streamlines may cross.
C)In turbulent flow,streamlines can begin or end at any point.
D)Streamlines are perpendicular to the velocity of the fluid at every point.
E)In steady flow,the pattern of streamlines does not change with time.
Answer: E
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3
Chapter 13: The Transfer of Heat
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Sample Questions
Q1) The sun continuously radiates energy into space in all directions.Some of the sun's energy is intercepted by the earth.The average temperature of the surface of the earth remains a little above 300 K.Why doesn't the earth's temperature rise as it intercepts the sun's energy?
A)The earth reflects the sun's light.
B)The earth radiates an amount of energy into space equal to the amount it receives.
C)The energy only raises the temperature of the upper atmosphere and never reaches the surface.
D)The thermal conductivity of the earth is low.
E)The heat is carried away from the earth by convection currents.
Answer: B
Q2) Which one of the following is not an example of convection?
A)Smoke rises above a fire.
B)An eagle soars on an updraft of wind.
C)A person gets a suntan on a beach.
D)Spaghetti is cooked in water.
E)An electric heater warms a room.
Answer: C
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Chapter 14: The Ideal Gas Law and Kinetic Theory
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Sample Questions
Q1) The volume of a carbon dioxide bubble rising in a glass of beer is observed to nearly double as the bubble rises from the bottom to the top of the glass.Why,according to our textbook,does the volume nearly double?
A)The temperature at the bottom is cooler than it is at the top.
B)The amount of carbon dioxide in the bubble increases.
C)The fluid pressure of the beer is greater at the bottom of the glass than at the top.
D)The pressure inside the bubble decreases as it rises.
E)The shape of the glass determines the net force exerted on the bubble.
Answer: B
Q2) A mixture of two ideal gases A and B is in thermal equilibrium at 600 K.A molecule of A has one-fourth the mass of a molecule of B and the rms speed of molecules of A is 400 m/s.Determine the rms speed of molecules of B.
A)100 m/s
B)200 m/s
C)400 m/s
D)800 m/s
E)1600 m/s
Answer: B
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Page 5
Chapter 15: Thermodynamics
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Sample Questions
Q1) A match ignites within in an oxygen-filled cylinder that has a movable piston.The piston is moved so quickly that no heat escapes.What kind of change is demonstrated in this process?
A)an isobaric change
B)an adiabatic change
C)an isothermal change
D)an isochoric change
E)a change of heat capacity
Q2) Which of the following samples exhibits the highest degree of entropy?
A)a diamond crystal
B)ammonia vapor
C)a block of graphite
D)a block of paraffin
E)liquid oxygen
Q3) What is the change in the internal energy during this isothermal process?
A)zero joules
B)1.28 × 10 J
C)4.40 × 10 J
D)2.93 × 10 J
E)1.04 × 10 J
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Chapter 17: The Principle of Linear Superposition and
Interference Phenomena
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Sample Questions
Q1) A 4.00-m long string,clamped at both ends,vibrates at 2.00 × 10² Hz.If the string resonates in six segments,what is the speed of transverse waves on the string?
A)100 m/s
B)133 m/s
C)267 m/s
D)328 m/s
E)400 m/s
Q2) Which of the figures do not illustrate possible resonant situations?
A)1 and 4
B)2 and 3
C)4 and 5
D)5 and 6
E)4,5,and 6
Q3) How many antinodes are observed for the resulting standing wave pattern?
A)2
B)3
C)4
D)5
E)6
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Chapter 20: Electric Circuits
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Sample Questions
Q1) Determine the maximum charge on the capacitor.
A)6.0 × 10<sup>-</sup> C
B)9.5 × 10<sup>-</sup> C
C)1.5 × 10<sup>-</sup> C
D)4.8 × 10<sup>-</sup> C
E)5.5 × 10<sup>-</sup> C
Q2) Which one of the following statements concerning capacitors of unequal capacitance connected in series is true?
A)Each capacitor holds a different amount of charge.
B)The equivalent capacitance of the circuit is the sum of the individual capacitances.
C)The total voltage supplied by the battery is the sum of the voltages across each capacitor.
D)The total positive charge in the circuit is the sum of the positive charges on each capacitor.
E)The total voltage supplied by the battery is equal to the average voltage across all the capacitors.
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Chapter 22: Electromagnetic Induction
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Sample Questions
Q1) What is the average current around the loop if the magnitude of the magnetic field is doubled in 0.4 s?
A)2.8 × 10<sup>-</sup>³ A,clockwise
B)4.5 × 10<sup>-</sup>³ A,clockwise
C)4.5 × 10<sup>-</sup>³ A,counterclockwise
D)9.0 × 10<sup>-</sup>³ A,clockwise
E)9.0 × 10<sup>-</sup>³ A,counterclockwise
Q2) Which one of the following phrases best describes the direction of the induced magnetic field generated by the current induced in the loop while the loop is being stretched?
A)clockwise
B)counterclockwise
C)into the page
D)out of the page
E)The induced field is zero.
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Chapter 25: The Refl Ection of Light: Mirrors
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Sample Questions
Q1) Which one of the following statements concerning a virtual image produced by a mirror is true?
A)A virtual image is always larger than the object.
B)A virtual image is always smaller than the object.
C)A virtual image is always upright relative to the object.
D)A virtual image is always inverted relative to the object.
E)A virtual image can be photographed or projected onto a screen.
Q2) Which ray(s)will pass through F after reflection?
A)1 only
B)2 only
C)3 only
D)both 1 and 2
E)1,2,and 3
Q3) Makenzie walks directly toward a plane mirror at a speed of 0.30 m/s.Determine the speed of the image relative to her.
A)0.15 m/s
B)0.30 m/s
C)0.60 m/s
D)0.90 m/s
E)1.2 m/s
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Chapter 26: The Refraction of Light: Lenses and Optical Instruments
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Sample Questions
Q1) In her biology class,Chris examines an insect wing under a compound microscope that has an objective lens with a focal length of 0.70 cm,an eyepiece with a focal length of 3.0 cm,and a lens separation distance of 16.00 cm.Chris has a near point distance of 22.5 cm.What is the approximate angular magnification of the microscope as Chris views the insect wing?
A)-75
B)-110
C)-140
D)-190
E)-250
Q2) What is the magnification of the image?
A)+0.3
B)-0.3
C)+0.7
D)-0.7
E)+0.8
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Chapter 29: Particles and Waves
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Sample Questions
Q1) Complete the following statement: The term photon applies
A)only to X-rays.
B)only to visible light.
C)to any form of wave motion.
D)to any form of particle motion.
E)to any form of electromagnetic radiation.
Q2) A photon has a collision with a stationary electron (h/mc = 2.43 × 10<sup>-</sup>¹² m)and loses 5.0% of its energy.The photon scattering angle is 180°.What is the wavelength of the incident photon in this scattering process?
A)2.4 × 10<sup>-</sup>¹² m
B)4.6 × 10<sup>-</sup>¹¹ m
C)9.2 × 10<sup>-</sup>¹¹ m
D)1.9 × 10<sup>-</sup>¹ m
E)3.1 × 10<sup>-</sup>¹² m
Q3) Which one of the following is demonstrated by the Compton effect?
A)time dilation
B)length contraction
C)the uncertainty principle
D)the wave properties of electrons
E)the particle properties of electromagnetic radiation
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