P3b
- Created by: anniedarlington
- Created on: 01-04-15 12:33
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- P3b
- pendulums
- time period depends on length, increase length, increase time period
- hydraulics
- different cross-sectional areas, pressure transmitted equally through a liquid, so pressure at both pistons is the same. P = F / A, so @ first piston a pressure is exerted using a small force over a small area. as 2nd pistons has a larger area so as F = P x A so there will be a larger force
- magnetic fields
- soft iron placed near end of solenoid = exert a force of attraction on it
- switch mode transformers
- smaller and lighter, operate at a frequency between 50kHz and 200 kHz, use very little power when switched on and no load is applied
- P=VI
- transformer - nearly 100% efficient
- pendulums
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