Exam Review Part 1 SPH 4 C Definitions
- Slides: 187
Exam Review Part 1 SPH 4 C
Definitions acceleration
Definitions acceleration N. The rate of change in the velocity of an object
Definitions charge
Definitions charge O. A quantity of electricity
Definitions current
Definitions current J. The rate of flow of electric charge
Definitions density
Definitions density H. The mass per unit volume of a material
Definitions displacement
Definitions displacement C. The change in position of an object
Definitions force
Definitions force M. A push or pull
Definitions mass
Definitions mass A. The quantity of matter in an object More mass = More inertia
Definitions potential difference
Definitions potential difference L. The energy per unit charge
Definitions power
Definitions power I. The rate of doing work or transforming energy
Definitions pressure
Definitions pressure G. The magnitude of the force per unit area
Definitions resistance
Definitions resistance K. The opposition to the flow of charge in a material
Definitions torque
Definitions torque F. The turning effect caused by a force
Definitions velocity
Definitions velocity D. The rate of change in the position of an object
Definitions volume
Definitions volume B. The amount of space an object takes up
Definitions work
Definitions work E. The amount of energy transferred to an object by a force
Units acceleration
Units acceleration I. Metres per second (m/s 2)
Units charge
Units charge B. Coulomb (C)
Units current
Units current A. Ampere (A)
Units density
Units density F. Kilograms per cubic metre (kg/m 3)
Units displacement
Units displacement G. Metre (m)
Units force
Units force J. Newton (N)
Units mass
Units mass E. Kilogram (kg)
Units potential difference
Units potential difference N. Volt (V)
Units power
Units power O. Watt (W)
Units pressure
Units pressure L. Pascal (Pa)
Units resistance
Units resistance M. Ohm (W)
Units torque
Units torque K. Newton-metre (N·m)
Units velocity
Units velocity H. Metres per second (m/s)
Units volume
Units volume C. Cubic metres (m 3)
Units work
Units work D. Joule (J)
Units Weight is measured using which of the following units? A. kg B. N C. J D. Both A and B
Units Weight is measured using which of the following units? A. kg *B. N C. J D. Both A and B
Units Kinetic energy is measured using which of the following units? A. kg B. N C. J D. W
Units Kinetic energy is measured using which of the following units? A. kg B. N *C. J D. W
Units What are the units of efficiency? Explain why. Efficiency has no units because it is the ratio of energy out to energy in – the units cancel out.
Motion What is the difference between a scalar and a vector? Give an example of each: Scalars have magnitude only (speed, work, current, etc. ). Vectors have magnitude and direction (velocity, force, etc. ).
Motion What is your displacement if you walk 24 m east and then 15 m west? A. 9 m east B. 9 m west C. 39 m east D. 39 m west
Motion What is your displacement if you walk 24 m east and then 15 m west? *A. 9 m east B. 9 m west C. 39 m east D. 39 m west 15 m 9 m 24 m
Motion The slope of a position-time graph measures which of the following quantities? A. acceleration B. displacement C. velocity D. none of the above
Motion The slope of a position-time graph measures which of the following quantities? A. acceleration B. displacement *C. velocity D. none of the above
Motion Which of the following situations most accurately demonstrates an object moving with constant velocity? A. a bungee jumper B. a sailboat in a steady wind C. the Moon orbiting the Earth D. both B and C
Motion Which of the following situations most accurately demonstrates an object moving with constant velocity? A. a bungee jumper *B. a sailboat in a steady wind C. the Moon orbiting the Earth D. both B and C The velocity of the Moon’s orbit cannot be constant because its direction changes.
Motion What is the average speed of a vehicle that takes 0. 5 h to travel 30 km? A. 15 km/h B. 60 km/h C. 150 km/h D. It cannot be determined.
Motion What is the average speed of a vehicle that takes 0. 5 h to travel 30 km? A. 15 km/h *B. 60 km/h C. 150 km/h D. It cannot be determined.
Motion Ms. Rosebery is driving at 20 m/s [N] when she hits the brakes and comes to a complete stop in 10 s. Her acceleration while she is braking is: A. 0 B. B. 2 m/s 2 [N] C. 2 m/s 2 [S] D. It cannot be determined.
Motion Ms. Rosebery is driving at 20 m/s [N] when she hits the brakes and comes to a complete stop in 10 s. Her acceleration while she is braking is: A. 0 B. B. 2 m/s 2 [N] *C. 2 m/s 2 [S] D. It cannot be determined.
Motion An object with an initial velocity of 4. 0 m/s [N] is accelerated at 2. 0 m/s 2 [S] for 2. 0 s. What is the final velocity of the object? A. 4. 0 m/s [S] B. 8. 0 m/s [N] C. 8. 0 m/s [S] D. zero
Motion An object with an initial velocity of 4. 0 m/s [N] is accelerated at 2. 0 m/s 2 [S] for 2. 0 s. What is the final velocity of the object? A. 4. 0 m/s [S] B. 8. 0 m/s [N] C. 8. 0 m/s [S] *D. zero
Motion A ball is dropped from some height. Neglecting air resistance, while the ball is falling, the magnitude of its velocity increases and the magnitude of its acceleration _______. A. increases B. decreases C. is zero D. is a non-zero constant
Motion A ball is dropped from some height. Neglecting air resistance, while the ball is falling, the magnitude of its velocity increases and the magnitude of its acceleration _______. A. increases B. decreases C. is zero *D. is a non-zero constant
Forces: Matching applied force
Forces: Matching applied force F. force that results when one object contacts another
Forces: Matching drag
Forces: Matching drag E. force that opposes the motion of an object through a fluid (including air)
Forces: Matching friction
Forces: Matching friction C. force that acts opposite to motion or attempted motion
Forces: Matching normal force
Forces: Matching normal force D. perpendicular force exerted by a surface
Forces: Matching tension
Forces: Matching tension A. force exerted on an object by an attached rope or string
Forces: Matching weight
Forces: Matching weight B. gravitational force on an object
Forces Which object has the least inertia? A. a feather B. a pen C. a textbook D. a desk
Forces Which object has the least inertia? *A. a feather B. a pen C. a textbook D. a desk More mass = More inertia
Forces A 5. 0 kg object has an net force of 30. 0 N acting on it. What is the acceleration of the object? A. 6 m/s 2 B. 30 m/s 2 C. 150 m/s 2 D. It cannot be determined.
Forces A 5. 0 kg object has an net force of 30. 0 N acting on it. What is the acceleration of the object? *A. 6 m/s 2 B. 30 m/s 2 C. 150 m/s 2 D. It cannot be determined.
Forces A book is resting on a table. The Earth is exerting a gravitational force of 8 N [down] on the book. Which of the following is the reaction force? A. 8 N [up] the table exerts on the book B. 8 N [down] the book exerts on the table C. 8 N [up] the book exerts on the Earth D. There is no reaction force.
Forces A book is resting on a table. The Earth is exerting a gravitational force of 8 N [down] on the book. Which of the following is the reaction force? A. 8 N [up] the table exerts on the book B. 8 N [down] the book exerts on the table *C. 8 N [up] the book exerts on the Earth D. There is no reaction force.
Forces What is the weight of a rock of mass 1. 5 kg? A. 0. 15 N B. 6. 5 N C. 9. 8 N D. 15 N
Forces What is the weight of a rock of mass 1. 5 kg? A. 0. 15 N B. 6. 5 N C. 9. 8 N *D. 15 N
Forces Which of Newton's Laws explains why you feel as if you are being pushed back in the seat when the vehicle in which you are riding suddenly accelerates forward? A. Newton's 1 st B. Newton's 2 nd C. Newton's 3 rd D. none of the above
Forces Which of Newton's Laws explains why you feel as if you are being pushed back in the seat when the vehicle in which you are riding suddenly accelerates forward? *A. Newton's 1 st B. Newton's 2 nd C. Newton's 3 rd D. none of the above
Forces Fuzzy dice are hanging from the rear-view mirror of a car that is travelling backward at constant speed. The dice are: A. angled toward the back of the car B. angled toward the front of the car C. hanging straight down D. It cannot be determined.
Forces Fuzzy dice are hanging from the rear-view mirror of a car that is travelling backward at constant speed. The dice are: A. angled toward the back of the car B. angled toward the front of the car *C. hanging straight down D. It cannot be determined.
Forces A box is being pushed across a surface with a constant velocity of 3. 0 m/s [W]. What is the direction of the frictional force? A. West B. East C. up D. down
Forces A box is being pushed across a surface with a constant velocity of 3. 0 m/s [W]. What is the direction of the frictional force? A. West *B. East C. up D. down
Simple Machines A machine may change the ______ of a force. A. direction B. magnitude C. both A and B D. Neither A nor B
Simple Machines A machine may change the ______ of a force. A. direction B. magnitude *C. both A and B D. Neither A nor B
Simple Machines Pliers are made up of two attached _____. A. inclined planes B. levers C. screws D. wedges
Simple Machines Pliers are made up of two attached _____. A. inclined planes *B. levers C. screws D. wedges
Simple Machines Stairs are considered to be a member of which family of simple machines? A. inclined plane B. lever C. both A and B D. neither A nor B
Simple Machines Stairs are considered to be a member of which family of simple machines? *A. inclined plane B. lever C. both A and B D. neither A nor B
Simple Machines If it takes a force of 10 N to pull a 20 N weight up an inclined plane, the AMA was: A. 0. 5 B. 1 C. 2 D. It cannot be determined.
Simple Machines If it takes a force of 10 N to pull a 20 N weight up an inclined plane, the AMA was: A. 0. 5 B. 1 *C. 2 D. It cannot be determined.
Simple Machines Which will be larger: actual mechanical advantage (AMA) or ideal mechanical advantage (IMA)? A. AMA B. IMA C. They are equal. D. It cannot be determined.
Simple Machines Which will be larger: actual mechanical advantage (AMA) or ideal mechanical advantage (IMA)? A. AMA *B. IMA C. They are equal. D. It cannot be determined. In the real world, friction reduces the mechanical advantage.
Simple Machines Torque on a lever will increase when the force is applied _______ the fulcrum. A. closer to B. further from C. either A or B D. neither A nor B
Simple Machines Torque on a lever will increase when the force is applied _______ the fulcrum. A. closer to *B. further from C. either A or B D. neither A nor B
Simple Machines When the effort torque is equal to the load torque, the lever is in _____ equilibrium. A. constant B. inertial C. static D. all of the above
Simple Machines When the effort torque is equal to the load torque, the lever is in _____ equilibrium. A. constant B. inertial *C. static D. all of the above
Simple Machines A wheelbarrow is an example of a _______ class lever. A. 1 st B. 2 nd C. 3 rd D. It is not a lever.
Simple Machines A wheelbarrow is an example of a _______ class lever. A. 1 st *B. 2 nd C. 3 rd D. It is not a lever.
Simple Machines Which class of lever will always have an IMA of less than 1? A. 1 st B. 2 nd C. 3 rd D. all of them
Simple Machines Which class of lever will always have an IMA of less than 1? A. 1 st B. 2 nd *C. 3 rd D. all of them
Simple Machines What is the ideal mechanical advantage of the pulley system at right? A. 0 B. 1 C. 2 D. 3
Simple Machines What is the ideal mechanical advantage of the pulley system at right? A. 0 B. 1 *C. 2 D. 3
Simple Machines If a small gear is used to turn a large gear, the _____ will increase. A. speed B. torque C. both A and B D. neither A nor B
Simple Machines If a small gear is used to turn a large gear, the _____ will increase. A. speed *B. torque C. both A and B D. neither A nor B
Energy The work done on a system is equal to its change in: A. force B. energy C. power D. both B and C
Energy The work done on a system is equal to its change in: A. force *B. energy C. power D. both B and C
Energy may be measured in: A. Joules B. calories C. kilowatt-hours D. all of the above
Energy may be measured in: A. Joules B. calories C. kilowatt-hours *D. all of the above
Energy 1 Joule is equivalent to:
Energy 1 Joule is equivalent to:
Energy A girl lifts a book at constant velocity. Which of the following is increased? The book's: A. gravitational potential energy B. kinetic energy C. both A and B D. neither A nor B
Energy A girl lifts a book at constant velocity. Which of the following is increased? The book's: *A. gravitational potential energy B. kinetic energy C. both A and B D. neither A nor B
Energy The 4 -kg book is lifted 1 m in 2 s. What was the power output? A. 0 W B. 20 W C. 40 W D. 80 W
Energy The 4 -kg book is lifted 1 m in 2 s. What was the power output? A. 0 W *B. 20 W C. 40 W D. 80 W
Energy What work is required to accelerate a 2 -kg toy car from a speed of 1 m/s to a speed of 2 m/s? A. 1 J B. 3 J C. 4 J D. It cannot be determined.
Energy What work is required to accelerate a 2 -kg toy car from a speed of 1 m/s to a speed of 2 m/s? A. 1 J *B. 3 J C. 4 J D. It cannot be determined.
Energy An object with a kinetic energy of 40 J is brought to rest by friction. The work done by friction was: A. -40 J B. 0 J C. 40 J D. It cannot be determined.
Energy An object with a kinetic energy of 40 J is brought to rest by friction. The work done by friction was: If the force is opposite the direction of motion, it decreases the energy of the object. *A. -40 J B. 0 J C. 40 J D. It cannot be determined.
Energy A machine uses 480 J of chemical energy to do 120 J of work. The efficiency of the machine is: A. 4% B. 25% C. 120% D. 400%
Energy A machine uses 480 J of chemical energy to do 120 J of work. The efficiency of the machine is: A. 4% *B. 25% C. 120% D. 400%
Energy The 360 J of energy lost in the previous question was probably lost as _______ energy. A. elastic potential B. gravitational potential C. heat D. kinetic
Energy The 360 J of energy lost in the previous question was probably lost as _______ energy. A. elastic potential B. gravitational potential *C. heat D. kinetic
Energy A projectile is launched from ground level. At the highest point in its trajectory its total mechanical energy is ______ its total mechanical energy at its launch position. A. less than B. equal to C. greater than D. It cannot be determined.
Energy A projectile is launched from ground level. At the highest point in its trajectory its total mechanical energy is ______ its total mechanical energy at its launch position. A. less than If there is no work being done on an object, its energy is not changed. *B. equal to C. greater than D. It cannot be determined.
Electricity and Magnetism The electrons in a DC circuit will flow: A. from the positive terminal to the negative terminal B. from the negative terminal to the positive terminal C. alternately A and B D. It cannot be determined.
Electricity and Magnetism The electrons in a DC circuit will flow: A. from the positive terminal to the negative terminal *B. from the negative terminal to the positive terminal C. alternately A and B D. It cannot be determined.
Electricity and Magnetism If the resistance of a circuit is increased, the current through the circuit will: A. increase B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism If the resistance of a circuit is increased, the current through the circuit will: A. increase *B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism Two 4 W resistors are placed in parallel. Their equivalent resistance is: A. 2 W B. 4 W C. 8 W D. 16 W
Electricity and Magnetism Two 4 W resistors are placed in parallel. Their equivalent resistance is: *A. 2 W B. 4 W C. 8 W D. 16 W
Electricity and Magnetism If the voltage supplied to a circuit is increased, the current through the circuit will: A. increase B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism If the voltage supplied to a circuit is increased, the current through the circuit will: *A. increase B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism If the voltage supplied to a circuit is increased, the power consumed by the load will: A. increase B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism If the voltage supplied to a circuit is increased, the power consumed by the load will: *A. increase B. decrease C. remain the same D. It cannot be determined.
Electricity and Magnetism A bar magnet is moved inside a conducting coil and locked into place. Current will flow when: A. the magnet is moved into the coil B. the magnet is locked into place C. both A and B D. neither A nor B
Electricity and Magnetism A bar magnet is moved inside a conducting coil and locked into place. Current will flow when: *A. the magnet is moved into the coil B. the magnet is locked into place C. both A and B D. neither A nor B
Electricity and Magnetism A generator is a device that: A. turns mechanical energy into electrical energy B. turns electrical energy into mechanical energy C. alternately A and B D. neither A nor B
Electricity and Magnetism A generator is a device that: *A. turns mechanical energy into electrical energy B. turns electrical energy into mechanical energy C. alternately A and B D. neither A nor B
Electricity and Magnetism A transformer requires: A. AC B. DC C. both AC and DC D. neither AC nor DC
Electricity and Magnetism A transformer requires: *A. AC B. DC C. both AC and DC D. neither AC nor DC
Electricity and Magnetism The part of a DC motor that rotates due to magnetic forces is called the: A. armature B. brush C. commutator D. field magnet
Electricity and Magnetism The part of a DC motor that rotates due to magnetic forces is called the: *A. armature B. brush C. commutator D. field magnet
Fluids The order of substances from maximum to minimum compressibility is: A. air, water, steel B. steel, water, air C. water, air, steel D. air, steel, water
Fluids The order of substances from maximum to minimum compressibility is: *A. air, water, steel B. steel, water, air C. water, air, steel D. air, steel, water
Fluids Pneumatic systems will have a ______ response time compared to that of hydraulic systems. A. faster B. slower C. similar
Fluids Pneumatic systems will have a ______ response time compared to that of hydraulic systems. A. faster *B. slower C. similar
Fluids When you shift from standing on two feet to standing on one foot: A. the normal force increases and pressure remains the same B. the normal force decreases and pressure remains the same C. the normal force remains the same and pressure increases D. the normal force remains the same and pressure decreases
Fluids When you shift from standing on two feet to standing on one foot: A. the normal force increases and pressure remains the same B. the normal force decreases and pressure remains the same *C. the normal force remains the same and pressure increases D. the normal force remains the same and pressure decreases
Fluids A barometer is a device used to measure ______ pressure. A. absolute B. atmospheric C. gauge D. all of the above
Fluids A barometer is a device used to measure ______ pressure. A. absolute *B. atmospheric C. gauge D. all of the above
Fluids If the height of a column of fluid is increased, it will exert _____ pressure. A. more B. less C. the same
Fluids If the height of a column of fluid is increased, it will exert _____ pressure. *A. more B. less C. the same
Fluids In a hydraulic system with two pistons, piston A is half the diameter of piston B. The pressure on piston A is _____ the pressure on piston B. A. 1/4 B. 1/2 C. 2 times D. 4 times E. the same as
Fluids In a hydraulic system with two pistons, piston A is half the diameter of piston B. The pressure on piston A is _____ the pressure on piston B. A. 1/4 B. 1/2 C. 2 times D. 4 times *E. the same as
Fluids In the previous question, the force on piston A is _____ the force on piston B. A. 1/4 B. 1/2 C. 2 times D. 4 times E. the same as
Fluids In the previous question, the force on piston A is _____ the force on piston B. *A. 1/4 B. 1/2 C. 2 times D. 4 times E. the same as
Fluids Which of the following fluids would have the lowest viscosity? A. water B. syrup C. hand soap D. The viscosities are the same.
Fluids Which of the following fluids would have the lowest viscosity? *A. water B. syrup C. hand soap D. The viscosities are the same.
Fluids Flow in which the particles of the fluid move smoothly over each other is called _____ flow. A. eddy B. laminar C. turbulent D. viscous
Fluids Flow in which the particles of the fluid move smoothly over each other is called _____ flow. A. eddy *B. laminar C. turbulent D. viscous
Fluids If the speed of a fluid is increased, the pressure is: A. increased B. decreased C. unchanged D. It cannot be determined.
Fluids If the speed of a fluid is increased, the pressure is: A. increased *B. decreased C. unchanged D. It cannot be determined.
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