4187030
Pregunta 1
Pregunta
What is when a 1kg mass has an acceleration of 1ms-2
Respuesta
-
The Ohm
-
Gravity
-
The Newton
-
A Moment
Pregunta 2
Pregunta
What type of quantity that has both size and direction?
Respuesta
-
Magnitude
-
Vector
-
Scalar
-
Force
Pregunta 3
Pregunta
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].
Respuesta
-
constant velocity
-
zero
-
at rest
Pregunta 4
Pregunta
Momentum = [blank_start]mass x velocity[blank_end]
Respuesta
-
mass x velocity
Pregunta 5
Pregunta
Newton's 2nd Law: Rate of [blank_start]change of momentum[blank_end] is proportional to [blank_start]force[blank_end]
Respuesta
-
change of momentum
-
force
Pregunta 6
Pregunta
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.
Respuesta
-
equal
-
opposite
Pregunta 7
Pregunta
Acceleration: [blank_start]the rate of change of velocity[blank_end]
Respuesta
-
the rate of change of velocity
Pregunta 8
Pregunta
Speed is the rate of change of displacement
Respuesta
- True
- False
Pregunta 9
Pregunta
Velocity is the rate of change of displacement
Respuesta
- True
- False
Pregunta 10
Pregunta
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]
Respuesta
-
movement
-
velocity
-
force
-
speed
-
gravity
-
force
-
mass
-
direction
-
mgh
-
ma
-
1/2mv^2
-
u + at
Pregunta 11
Pregunta
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].
Respuesta
-
height
-
gravitational field strength
-
mgh
Pregunta 12
Pregunta
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]
Respuesta
-
Joule
Pregunta 13
Pregunta
Which of these describes Power?
Respuesta
-
A joule per second
-
The rate of work done
-
energy/time
-
force x distance
Pregunta 14
Pregunta
Watt: a [blank_start]joule per second[blank_end]
Respuesta
-
joule per second
Pregunta 15
Pregunta
Work Done: [blank_start]force x distance[blank_end]
Respuesta
-
force x distance
Pregunta 16
Pregunta
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]
Respuesta
-
point
-
weight
-
appears to act
Pregunta 17
Pregunta
What is true for the Principle of Conservation of Energy?
Respuesta
-
Energy cannot be created or destroyed
-
Energy can be transformed from one form to another
-
Lost energy is always destroyed
-
Energy can be created from burning fuel
Pregunta 18
Pregunta
Moment: [blank_start]Force[blank_end] [blank_start]x[blank_end] [blank_start]perpendicular distance from the pivot[blank_end]
Respuesta
-
Force
-
x
-
perpendicular distance from the pivot
Pregunta 19
Pregunta
Current: [blank_start]flow[blank_end] of [blank_start]charged[blank_end] particles
Respuesta
-
flow
-
charged
Pregunta 20
Pregunta
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]
Respuesta
-
charge
-
1s
-
current
-
1A
Pregunta 21
Pregunta
Conventional Current is the flow of [blank_start]positive charge[blank_end] from [blank_start]positive to negative[blank_end]
Respuesta
-
positive charge
-
negative charge
-
protons
-
positive to negative
-
negative to positive
Pregunta 22
Pregunta
Charge= [blank_start]current x time[blank_end]
Respuesta
-
current x time
Pregunta 23
Pregunta
Voltage is [blank_start]work done per unit charge[blank_end]
Respuesta
-
work done per unit charge
Pregunta 24
Pregunta
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]
Respuesta
-
Current
-
directly proportional
-
potential difference
-
physical conditions
-
constant.
Pregunta 25
Pregunta
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.
Respuesta
-
energy transformed per unit charge
-
another
-
electrical
Pregunta 26
Pregunta
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]
Respuesta
-
currents entering a junction
-
equal
-
currents leaving the junction.
Pregunta 27
Pregunta
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]
Respuesta
-
voltages
-
closed loop
Pregunta 28
Pregunta
Resistance is [blank_start]voltage per unit current.[blank_end]
Respuesta
-
voltage per unit current.
Pregunta 29
Pregunta
An ohm is the [blank_start]potential difference[blank_end] of [blank_start]one volt per ampere.[blank_end]
Respuesta
-
potential difference
-
one volt per ampere.
Pregunta 30
Pregunta
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].
Respuesta
-
RA/l
-
resistance of a 1m length
-
1m^2 cross sectional area
-
ohm metres
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