4C1: Exam Review

Date: June 17 in the gym   8:30 AM

Make sure you bring your text book with you to the exam.

There are five main areas of study:

  1. Mechanics and the Laws of Motion, Motion Analysis
  2. Energy Transformations
  3. Pneumatics and Hydraulics
  4. Electricity and Electronics
  5. Waves; Sound and Light

Unit I Mechanical Systems

  1. What are the units for velocity, acceleration, force, work energy etc.
  2. Simple machines, do you know the six of them?
  3. What is a force?, what are Newton's Laws?
  4. Energy, work, force, & power, make sure you know the difference between 'em and their units and can use them in a word problem.
  5. The lever, know what it is, what are the three classes and how to do the arithmetic given a math related question.
  6. What is torque?
  7. Different types of energy
  8. Load and effort, what's the difference?
  9. What is mechanical advantage and how is calculated?
  10. Gravitational potential energy? can you determine it?
  11. Kinetic energy; make sure you the formula and use it.
  12. Can you sketch a pulley system?
  13. Make sure you can convert mass to weight.

Sample Questions

  1. How much work must be applied to move an 14.5 kg object 40m so that net applied force is 2.2N used just to overcome friction?
  2. Draw a free body diagram showing all forces acting on a 3.4 kg object that is moving up a ramp which is angled 20o.
  3. What is the mechanical advantage of a two pulley system (one fixed and one moveable? If a mass of 224 kg is to be raised 1.2 m what is the required effort force needed?
  4. If a 5.5 kW rated motor is used to raise a 57 kg object 4.2m, how long will it take this motor to raise this object?
  5. Explain what the angle of repose is.
  6. A 175 cm lever is used to lift a 5.00 kg object. If the fulcrum is placed 25 cm from the load, determine the required effort. Draw a digram.

Unit II Energy Transformations

  1. Energy transformations; what are they, can you give examples of each?
  2. Work and the formula for work.
    Using this formula in word problems
  3. Work done to move or raise an object F = mg
  4. Gravitational potential energy Eg = mgh and
    Kinetic energy EK = 1/2mv2
  5. Energy stored in springs
  6. Thermal ennergy & heat; difference between heat & temperature (page 149)
  7. Methods of heat transfer; three of them
  8. Renewable and nonrenewable energy resources. Section 3.7 (page 155) in the text.
  9. Power; the equation and being able to use it.
  10. Efficiency of machines or energy transfer system.
    Energy lose in a machine or system.
  11. Using energy efficiently; a comparison of technologies. (Page 193)

Unit III Hydraulics & Pneumatics

  1. What is Benoulli's Principle?
  2. What's the difference between an hydraulic system and a pneumatic system?
    Make sure you know examples of each.
  3. Know examples of devices that employ Bernoulli's Principle in their operation.
  4. Can you solve problems involving a hydraulic piston system?
  5. What are the advantages of fluid power?
  6. How does density change with fluid depth?
  7. Buoyance and Archimede's Principle, refer to solved problems done in class
  8. Objects lose weight when immersed in a fluid and this lose is proportional to the density of the fluid. Can you solve a word problem using this concept?

Unit III Electricity & Electronics

  1. Electrical units: volts, amps, coulombs, faradays, watts, ohms
    Be careful with the metric prefixes.
  2. Circiut analysis using Ohm's Law
  3. The capacitor
  4. Be able to determine the combined resistance when individual resistors are connected in series or parallel or maybe both.
  5. Make sure you can draw electrical schematic diagrams
  6. Be able to solve circiut problemes using Ohm's Law, Kirchoff's Law and the ablity to add resistors together properly.
  7. How many volts from a wall socket?
  8. How does power relate to current and voltage?

Unit IV Waves, Sound, & Light

  1. What's the difference between longnitudinal and transvers wave forms? Make sure you know what a wave is.
  2. What does the frequency and wavelenght of a swinging pendulum depend on?
  3. What are the two types of vision impairments and how can they be corrected.
  4. What is a normal line?
  5. What is refraction and how or why does it occur?
  6. What type of images are formed in concave and convex lenses?
  7. Do you know the colours of the visisble spectrum?
  8. What is a "critical angle"?
  9. What is the difference between the term real and virtual?
  10. Make sure you know how an image changes as the object is moved from afar to close to the lens.
  11. Parts of the eye and what these parts do
  12. Colour addition, common examples.
  13. Crests, troughs, condensations, rarefractions; compair these terms.
  14. The guitar lab; know the results ALL the results.
  15. Beats, octaves, and overtones.
  16. Constructive and destructive interference.
  17. Speed of sound in air and the wave equation, know how to use them together.
  18. Resonance in open and closed air columns.
  19. Lens diagram.

Exam Outline & Format

  1. Exam Breakdown
    1. Multiple Choice: approximate 30 questions done on a Scantron Card so make sure you have a pencil 30 marks
    2. Fill in the blanks: approximately 30 questions for 30 marks
    3. Written responses: approximately 14 questions for 34 marks
    4. Diagrams: approximately 6 questions for 21 marks
  2. This is a 2 hour exam
  3. Make sure you have a calculator, ruler, protractor and pencil. Graph paper will be provided.
  4. Make sure you can solve the following problem types
    1. Draw and solve a given circuit
    2. Sketch a lable a wave train
    3. Sketch a pulley system
    4. Apply Bernoulli's Principle
    5. How to find the density of an object using Archimede's Principle
    6. Solve problems relating work and energy, both potential and kinetic
    7. Lever problems
    8. Series and parallel resistors
    9. The purpose af a capacitor
    10. Sketch a lens diagram accurately

Exam Review Questions

Multiple Choice Section:

Questions or partial statements will be given and you use your imagination to come up with a suitable questions based on the statement and the answer and several logical wrong choices.
These are concept questions and should not be taken as exact examples.

  1. What is a capacitor used for?what are its units?
  2. In order to do work you must
  3. Which of these devices or machines uses hydraauliccs to gain a mechanical advantage
  4. A push or a pull is considered a
  5. Which of these Laws is Newton's Second Law
  6. What is the mechanical advantage of a two pulley system
  7. What does moving the plates of a capicitor do
  8. The characteristics of an image formed in in a convex lense with the object at 2f from the lens is
  9. Images in concave lenses are always An 12 N force is applied to a 4.0 kg mass. What is its acceleration?
  10. Which of these diagrams is a 3rd class lever?
  11. If the index of refraction in water is 1.33, and a beam of light enters the water at a 25o angle, what is the angle of refraction?
  12. What is Snell's Law
  13. Define i) Critical Angle, and ii) Angle of Repose
  14. What is the frequency of a note that is two octave above a D note with a frequency of 112 Hz?
  15. If vector 1 is 7.5 N [N35o and vector 2 is 12 N [S] what is the sum of these two vectors
  16. How many notes in an octave
  17. Which of these diagrams represents an air column that is in its 4th harmonic or 3rd overtone?
  18. Which of these materials has the lowest dielectric constant
  19. What force is needed to lift a 1200kg load using a 1.5 m lever with the fulcrum positioned 30 cm from the load
  20. Which of these are not a form of energy
  21. Three resistors are added together eithe in parallel or series. What is their sum
  22. Given this diagram, determine the wavelength and amplitude
  23. Which of these formuls can be used to calculate kinetic energy
  24. Two notes are sounded together. One is 350 Hz and the other is 353 Hz. How many beats are heard?
  25. What does voltage overload do to a capacitor
  26. Which of these is not considered a simple machine

Diagrams the you should be able to draw

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