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Worksheetsviva 2 first
Total questions: 64
Worksheet time: 32mins
Physical quantities requiring both magnitude and direction are called:
Scalars
Tensors
Vectors
Matrices
Which of the following is an example of a vector quantity described in the manual?
Temperature
Mass
Wind Velocity
Time
The vector sum of two or more vectors is known as the:
Resultant
Equilibrant
Component
Product
In the parallelogram method, the resultant is represented by:
The side adjacent to the angle
The diagonal of the parallelogram
The height of the parallelogram
The intersection of sides
The 'Triangle Method' involves placing vectors:
Head-to-tail
Tail-to-tail
Head-to-head
Parallel to each other
The force that balances the resultant force to bring a system to equilibrium is the:
Resultant
Equilibrant
Normal force
Friction
If Vector A = 20N and Vector B = 20N are at 180° to each other, the resultant is:
40N
20N
0N
10N
On a force table, the ring remains centered when the net force is:
Maximum
Zero
Equal to one weight
Infinite
To improve the accuracy of the vector table experiment, one should:
Use old strings
Tap the pulley to minimize friction
Use different sized pulleys
Ignore the angles
The unit of Force used in this experiment is:
Kg
Newton
Joule
Watt
Which law is used to calculate the resultant vector mathematically?
Ohm's Law
Law of Cosines
Boyle's Law
Hooke's Law
The 'Equilibrant' vector has the _____ magnitude and _____ direction as the Resultant.
Same; Same
Same; Opposite
Different; Same
Different; Opposite
When adding vectors graphically, the length of the arrow represents:
Magnitude
Direction
Uncertainty
Time
If three forces act on a ring and it does not move, the system is in:
Rotation
Acceleration
Equilibrium
Free fall
Errors in this experiment are most likely caused by:
Friction in pulleys
Gravity changes
Air density
Magnetic fields
A scalar quantity has:
Only magnitude
Only direction
Both
Neither
Which trigonometric function is used to find the vertical component of a vector?
Sine
Cosine
Tangent
Secant
If the angle between two equal vectors decreases, the magnitude of their resultant:
Increases
Decreases
Stays constant
Becomes zero
Mass is converted to Weight (Force) by multiplying by:
(gravity)
(height)
(time)
The graphical method requires:
A calculator
A ruler and protractor
A stopwatch
A thermometer
A quantity that describes both magnitude and direction is a (a) quantity.
The equilibrant force is in the same direction as the resultant force.
True
False
In the head-to-tail method, the resultant is drawn from the (a) of the first vector to the head of the last vector.
Tapping the table helps eliminate static friction in the pulleys.
True
False
The condition where is called (a) .
Wind velocity is a scalar quantity.
True
False
The law of (a) is useful for adding two vectors analytically.
Increasing the mass on the pulleys changes the angle required for equilibrium.
True
False
Mass is a (a) quantity.
The diagram shape formed when adding more than two vectors is a (a) .
When a solid reaches its melting point, additional heat causes:
Temperature rise
Phase change without temperature change
Temperature drop
Expansion only
The heat required to melt a solid depends on its mass and:
Volume
Density
Specific latent heat of fusion ()
Boiling point
Specific heat capacity () is relevant when:
Phase changes
Temperature changes
Mass changes
Pressure changes
To ensure accurate measurement, ice cubes must be:
Crushed
Dried
Melted
Cubed
The SI unit for Specific Latent Heat is:
J/kg
J/kg°C
J
W
Thermal equilibrium occurs when:
Heat flows from hot to cold
Two objects reach the same temperature
Phase change stops
Power is turned off
If water is on the surface of the ice before adding it to the calorimeter, the calculated will be:
Lower than actual
Higher than actual
Unchanged
Infinite
The specific heat capacity of water is approximately:
J/kg°C
J/kg°C
J/kg°C
J/kg°C
The heat gained by the ice equals:
Heat lost by water only
Heat lost by water + Heat lost by calorimeter
Power supplied
Zero
Stirring the mixture ensures:
Faster melting
Uniform temperature distribution
Increased friction
Aeration
Which variable is NOT needed to calculate of ice?
Mass of ice
Initial water temp
Atmospheric pressure
Final mixture temp
Latent heat of fusion refers to the transition from:
Solid to Liquid
Liquid to Gas
Solid to Gas
Liquid to Solid
If the final temperature is lower than room temperature, heat is:
Lost to surroundings
Gained from surroundings
Conserved completely
Zero
The symbol for specific heat capacity is:
Electrical energy is calculated as:
A mixture of ice and water at equilibrium is at:
Why is a polystyrene cup often used?
Transparency
Good insulation
High conductivity
Strength
The total heat required to melt ice and warm the water is:
The rotation of the axis of a spinning object due to torque is called:
Rotation
Precession
Translation
Vibration
A gyroscope measures:
Linear velocity
Angular orientation/velocity
Temperature
Mass
The moment of inertia () relates torque () and:
Velocity
Angular acceleration ()
Mass
Gravity
Nutation is:
Smooth rotation
A slight wobbling/nodding of the axis
Linear motion
A complete stop
The period of precession depends on:
Temperature
Torque and Angular Momentum
Air resistance
Color of disk
If the spin speed of the gyroscope increases, the precession rate:
Increases
Decreases
Stays same
Reverses
The relationship between torque () and change in angular momentum () is:
Torque is calculated as:
Force Distance ()
Force / Distance
Mass Velocity
Energy / Time
The unit of Moment of Inertia is:
If weight is added to the end of the gyroscope axle, the torque:
Increases
Decreases
Stays zero
Becomes negative
Gyro-frequency refers to:
Precession speed
Spin speed of the disk
Nutation speed
Pendulum swing
To determine Moment of Inertia experimentally, one can measure:
Voltage
Angular acceleration
Density
Volume
The direction of precession can be determined by:
The Right-Hand Rule
The Left-Hand Rule
Hooke's Law
Bernoulli's Principle
When the external torque is zero, the angular momentum is:
Conserved
Increasing
Decreasing
Zero
A 'Free Axis' in a gyroscope allows:
No motion
Rotation
Friction
Heating
Precession frequency is usually _____ than the spin frequency.
Much lower
Much higher
Equal
Unrelated
