What does the gradient on a distance time graph represent.
velocity
distance travelled
momentum
acceleration
speed
What does gradient of the line on a velocity time graph represent
kinetic energy
The stopping distance of a vehicle is the equal to
the sum of the reaction time and the braking time
the sum of the breaking distance and the reaction time
the sum of the thinking distance the breaking time
the sum of the thinking distance and the breaking force
the product of the breaking time and the thinking distance
What is the equation relating the spring constant (k), the force (F) and the extension (E).
E=KxF
F=Kxe
E=K+F
K=ExF
the current potential difference graph for a resistor at a constant temp is
line x=0
line y=0
line y=x
line y=-x
y=x until halfway up the graph where it remains as y=5
The greater the P.D. the __________ the current, for a component at a given _________.
greater
smaller
altitude
mass
temperature
resistance
For components connected in series
the total resistance is the sum of the resistance in all the components
the P.D is the same across all the components
the charge is constantly changing in all the components
same current through each component
the total current through the whole circuit is the sum of the currents through the separate components.
the potential difference of the supply is the shared between the components
Mains electricity is a.c.
Mains electricity has a frequency of
60Hz
70Hz
80Hz
50Hz
230Hz
The units of charge are
volts
joules
ampere
watts
kilowatts
couloumbs
What comes directly after the main sequence of a star about the size of our sun
white dwarf
black dwarf
red super giant
nebula
red giant
One eventual outcome for a huge star is a black hole, what is the other
Supernova
White dwarf
Nebula
Neutron star
