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Physics
- Newtons 3rd law
- For every action there is a equal an opposite reaction
- There is a force pushing down on the
ground sending a rocket up
- For every action there is a equal an opposite reaction
- Forces between objects
- A force can change the shape of
an object
- A boxer who punches a opponent with a force of 100n
experiences a reverse force of 100n from his opponent.
- A force can change the shape of
an object
- Circuits
- A fuse is a safety device that switches off an appliance if
a current flowing through the live wire gets too big
- A fuse has a rating in amps printed on the side
- If the current flowing through a fuse goes
above its rated value then the fuse blows
- This breaks the circuit and disconnects the appliance
- This breaks the circuit and disconnects the appliance
- If the current flowing through a fuse goes
above its rated value then the fuse blows
- A fuse has a rating in amps printed on the side
- A fuse is a safety device that switches off an appliance if
a current flowing through the live wire gets too big
- Doppler effect
- When a fire engine drives past its siren is high pitched as it
comes towards you and low pitch as it drives away - this is the
doppler effect
- Frequency decreases as it gets further away
- When a fire engine drives past its siren is high pitched as it
comes towards you and low pitch as it drives away - this is the
doppler effect
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