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Physics5
Question | Answer |
---|---|
Efficiency Equation | Efficiency= Useful Energy Out Total Energy In |
Specific Heat Capacity (C) | Energy Transferred= Mass x C x Temp change (J) (Kg)(J/Kg°C) (°C) |
Cost of Electricity | No. of Units(kWh)= Power x Time (kW) (Hours) |
Payback Time | Initial cost Annual saving |
Energy Equation | Energy= Power x Time (J) (W/kW) (s) |
Wave Equation | Speed= frequency x Wavelength (m/s) (Hz) (m) |