Quiz
Statics
Perguntas do quiz (32)
1What is accuracy?
- AHow close the measurement is to the accepted value
- BThe degree to which you measure
- CThe skill of the experimenter
- DThe level of uncertainty
2The smallest scale increment on a measuring device is the...
- APrecision
- BAccuracy
- CReliablity
- DUncertainty
3What does the level of uncertainty depend on?
- AAccuracy
- BPrecision
- CNumber of repeats
4All experiments are uncertain
- AVerdadeiro
- BFalso
5Which of these are systematic errors?
- Aexperimental set up
- BHuman error
- Cfaulty equipment
- Dinconsistent parallax error
- Ereaction time
- FZero errors on meters
6Which of the following does not apply to random errors?
- AThey reduce the accuracy
- BThe reduce the precision
- CThey can never be fully eliminated
7Systematic errors can be totally eliminated
- AVerdadeiro
- BFalso
8When adding or subtracting measured quantities, how do we find the uncertainty?
- AAdd the absolute uncertainty of each
- BAdd the percentage uncertainty of each
- CMultiply the percentage uncertainties together
- DUse the biggest absolute uncertainty
9When multiplying or dividing quantities, how do we find the uncertainty?
- AAdd the percentage uncertainty
- BMultiply the percentage uncertainties
- CAdd the absolute uncertainties
- DDouble the uncertainty
10What is a scalar quantity?
- AA quantity with magnitude only
- BA quantity with magnitude and direction
11Which of these are scalar quantities?
- ADistance
- BSpeed
- CVelocity
- DCurrent
- EAcceleration
- FMass
- GDensity
12How do you combine scalar quantities?
- AAdd them
- BMultiply them
- CResolve them
13Momentum is a vector
- AVerdadeiro
- BFalso
14Force is a scalar
- AVerdadeiro
- BFalso
15How do you combine parallel vectors?
- AAdd/subtract them
- BMultiply/divide them
- CMake them into a triangle and use pythagoras
16How do you combine vectors that are at random angles relative to each other?
- AAdd their magnitude and their angles
- BResolve them
- CUse the parallelogram rule
17Upthrust is...
- AThe force on an object due to the difference in pressure when immersed in a fluid.
- BThe contact force of water
- CThe opposite of gravity
18Weight is...
- AThe force on an object due to gravity
- BGravity
- CThe mass of an object
19What is the pulling force exerted by a string, chain, cable or similar object?
- ATension
- BNormal reaction force
- CWeight
- DUpthrust
20What is friction
- AA force resisting the parallel movement of two surfaces in contact
- BA force that slows down objects
- CA force which prevents objects from sliding
21Which of these are fundamental forces?
- AStrong Nuclear
- BWeak Nuclear
- CGravitational
- DElectromagnetic
22In which direction does weight act?
- AVertically downwards
- BPerpendicularly downwards to the object
- CParallel to the surface
23In which direction does the normal reaction force act?
- AVertically upwards
- BPerpendicular to the surface producing it
- CPerpendicular to the object
- DParallel to the object
24If an object is in equilibrium it is static
- AVerdadeiro
- BFalso
25What does equilibrium mean?
- AThere are no forces acting on a body
- BThere is no resultant force
- CA body is completely still
- DA body is balanced
26What is a moment?
- AThe turning effect of a single force
- Bforce x distance
- Cforce x perpendicular distance
- Dweight x distance
- Eforce/distance
- FA pair of forces that are equal and opposite
- GThe forces on an object
27What is the principle of moments?
- AThe sum of the clockwise moments of an object = the sum of the anticlockwise moments of an object
- BIf an object is in equilibrium: the sum of clockwise moments = the sum of anticlockwise moments
- CThe sum of anticlockwise moments on an object can never fully equal the sum of clockwise moments on an object
28A couple of forces is two forces that are equal and opposite and acting in the same line
- AVerdadeiro
- BFalso
29What is torque?
- AThe moment of a couple
- BFd
- CFd/2
- DThe resultant of two perpendicular forces
- EThe distance of forces from the pivot
30What is pressure measured in?
- ANm^-2
- BNm^2
- CN/m
- DPa
31Pressure = perpendicular force/area
- AVerdadeiro
- BFalso
32Pressure = density x height x gravity
- AVerdadeiro
- BFalso
Informações
- Descrição
- Quiz sobre Statics, criado por Nicole Saville em 27-10-2014.
- Autor
- Nicole Saville
- Idioma
- English
- Visualizações
- 43
- Etiquetas
- Avaliação
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