Revise the main points of the Big Bang Story of the Universe.

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from Mr Mallon @ Helpmyphysics
from Mr Mallon @ Helpmyphysics
from Mr Mallon @ Helpmyphysics
Have some end of term Christmas fun while doing Higher physics revision.
Happy Christmas
from Mr Mallon @ Helpmyphysics
How potential and kinetic energies relate with friction in a skateboard park.
Conservation of energy by Danny Mallonfrom Mr Mallon @ Helpmyphysics
Here is projectile video number one looking at projectiles aimed at walls.
By working out the horizontal and vertical components then using the horizontal component to determine the time it takes to reach the wall, the displacement S can be found.
from Mr Mallon @ Helpmyphysics
from Mr Mallon @ Helpmyphysics
A quick video to calculate the acceleration down a slope.
from Mr Mallon @ Helpmyphysics
from Mr Mallon @ Helpmyphysics
from Mr Mallon @ Helpmyphysics
A capacitor can be used in a sensor circuit to switch on a transistor after a time interval.
Such a voltage divider circuit will act as a kind of timer.
The time the voltage across the capacitor reaches 0.7 v, to switch on the transistor, can be short or long depending on the size of the capacitance of the capacitor or the size of the resistor its being charged through.
To lengthen the time interval the resistance can be made bigger or the vakue of the capacitor’s capacitance can be made bigger.