4187030
Questão 1
Questão
What is when a 1kg mass has an acceleration of 1ms-2
Responda
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The Ohm
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Gravity
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The Newton
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A Moment
Questão 2
Questão
What type of quantity that has both size and direction?
Responda
-
Magnitude
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Vector
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Scalar
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Force
Questão 3
Questão
Newton's 1st Law: An object will remain [blank_start]at rest[blank_end] or at a [blank_start]constant velocity[blank_end] in a straight line until an external force acts on it, so the resultant force is [blank_start]zero[blank_end].
Responda
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constant velocity
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zero
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at rest
Questão 4
Questão
Momentum = [blank_start]mass x velocity[blank_end]
Responda
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mass x velocity
Questão 5
Questão
Newton's 2nd Law: Rate of [blank_start]change of momentum[blank_end] is proportional to [blank_start]force[blank_end]
Responda
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change of momentum
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force
Questão 6
Questão
Newton's 3rd Law: If object A exerts a force on object B, then object B exerts an [blank_start]equal[blank_end] and [blank_start]opposite[blank_end] force on object A.
Responda
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equal
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opposite
Questão 7
Questão
Acceleration: [blank_start]the rate of change of velocity[blank_end]
Responda
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the rate of change of velocity
Questão 8
Questão
Speed is the rate of change of displacement
Responda
- True
- False
Questão 9
Questão
Velocity is the rate of change of displacement
Responda
- True
- False
Questão 10
Questão
KE: Energy due to [blank_start]movement[blank_end] which depends on [blank_start]mass[blank_end] and speed. The equation is [blank_start]1/2mv^2[blank_end]
Responda
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movement
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velocity
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force
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speed
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gravity
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force
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mass
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direction
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mgh
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ma
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1/2mv^2
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u + at
Questão 11
Questão
GPE: energy due to [blank_start]height[blank_end] above ground, depends on [blank_start]gravitational field strength[blank_end] (G.F.S). The equation is [blank_start]mgh[blank_end].
Responda
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height
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gravitational field strength
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mgh
Questão 12
Questão
Energy needed to move a force of 1N a distance of 1m in the direction of the force. This describes the [blank_start]Joule[blank_end]
Responda
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Joule
Questão 13
Questão
Which of these describes Power?
Responda
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A joule per second
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The rate of work done
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energy/time
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force x distance
Questão 14
Questão
Watt: a [blank_start]joule per second[blank_end]
Responda
-
joule per second
Questão 15
Questão
Work Done: [blank_start]force x distance[blank_end]
Responda
-
force x distance
Questão 16
Questão
Centre of Gravity: The [blank_start]point[blank_end] where all of the [blank_start]weight[blank_end] of an objects [blank_start]appears to act[blank_end]
Responda
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point
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weight
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appears to act
Questão 17
Questão
What is true for the Principle of Conservation of Energy?
Responda
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Energy cannot be created or destroyed
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Energy can be transformed from one form to another
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Lost energy is always destroyed
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Energy can be created from burning fuel
Questão 18
Questão
Moment: [blank_start]Force[blank_end] [blank_start]x[blank_end] [blank_start]perpendicular distance from the pivot[blank_end]
Responda
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Force
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x
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perpendicular distance from the pivot
Questão 19
Questão
Current: [blank_start]flow[blank_end] of [blank_start]charged[blank_end] particles
Responda
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flow
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charged
Questão 20
Questão
The coulomb: The [blank_start]charge[blank_end] (flowing past a point) in [blank_start]1s[blank_end] when the [blank_start]current[blank_end] is [blank_start]1A[blank_end]
Responda
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charge
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1s
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current
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1A
Questão 21
Questão
Conventional Current is the flow of [blank_start]positive charge[blank_end] from [blank_start]positive to negative[blank_end]
Responda
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positive charge
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negative charge
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protons
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positive to negative
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negative to positive
Questão 22
Questão
Charge= [blank_start]current x time[blank_end]
Responda
-
current x time
Questão 23
Questão
Voltage is [blank_start]work done per unit charge[blank_end]
Responda
-
work done per unit charge
Questão 24
Questão
Ohm's Law: [blank_start]Current[blank_end] is [blank_start]directly proportional[blank_end] to [blank_start]potential difference[blank_end] provided that all [blank_start]physical conditions[blank_end] remain [blank_start]constant.[blank_end]
Responda
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Current
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directly proportional
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potential difference
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physical conditions
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constant.
Questão 25
Questão
EMF is [blank_start]energy transformed per unit charge[blank_end] from [blank_start]another[blank_end] energy to [blank_start]electrical[blank_end] energy.
Responda
-
energy transformed per unit charge
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another
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electrical
Questão 26
Questão
Kirchhoff's 1st Law: The sum of the [blank_start]currents entering a junction[blank_end] is [blank_start]equal[blank_end] to the sum of the [blank_start]currents leaving the junction.[blank_end]
Responda
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currents entering a junction
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equal
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currents leaving the junction.
Questão 27
Questão
Kirchhoff's 2nd Law: The sum of the e.m.f.s is the sum of [blank_start]voltages[blank_end] in a [blank_start]closed loop[blank_end]
Responda
-
voltages
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closed loop
Questão 28
Questão
Resistance is [blank_start]voltage per unit current.[blank_end]
Responda
-
voltage per unit current.
Questão 29
Questão
An ohm is the [blank_start]potential difference[blank_end] of [blank_start]one volt per ampere.[blank_end]
Responda
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potential difference
-
one volt per ampere.
Questão 30
Questão
Resistivity = [blank_start]RA/l[blank_end].
Resistivity is the [blank_start]resistance of a 1m length[blank_end] with a [blank_start]1m^2 cross sectional area[blank_end]. Resistivity is measured in [blank_start]ohm metres[blank_end].
Responda
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RA/l
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resistance of a 1m length
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1m^2 cross sectional area
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ohm metres
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