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# Physics question? watch

1. How does gas pressure affect the performance of an internal combustion engine?
2. Think about the gas laws and how pressure affects other variables when increased or decreased and what that means for an internal combustion engine.
3. Im not sure at all, we have barely covered gas laws a
Think about the gas laws and how pressure affects other variables when increased or decreased and what that means for an internal combustion engine.
How does a current carryng wire change the reading on a balance?
5. (Original post by Flowerrainbow112)
Im not sure at all, we have barely covered gas laws a
Try reading ahead in your textbook/revision book? It's not too difficult, you should be able to make sense of it.
How does a current carryng wire change the reading on a balance?
Which direction is conventional current flowing? Is there a magnetic field?
7. if you increase the gas pressure the pressure will also increase which will cause for the pressure of the internal combustion engine to heat up and work at a faster rate?
8. (Original post by Flowerrainbow112)
if you increase the gas pressure the pressure will also increase which will cause for the pressure of the internal combustion engine to heat up and work at a faster rate?
Yes, this is Gay-Lussac's Law p/t=k, but does an internal combustion engine work faster if it heats up more? What about the other laws?
9. the lower the gas pressure the more faster the engine works?
10. (Original post by Flowerrainbow112)
the lower the gas pressure the more faster the engine works?
Nope, which other law involves pressure?
11. Charles and Boyle's law
12. (Original post by Flowerrainbow112)
Charles and Boyle's law
the latter, Charles' Law is when pressure is constant.

For a combustion engine you want the volume to be low.
13. why is important that the volume is low in combustion engines?
14. (Original post by Flowerrainbow112)
why is important that the volume is low in combustion engines?
The lower the volume the more pressure (Charles' Law pv=k). This means that more pressure can build up, meaning more force can be exerted when the spark plug ignites the gas. This ultimately means more energy in a smaller area and a bigger explosion so the piston is forced back down, and the cycle can restart.

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