Answer:
The si unit to measure force are Pascels or Pa
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In a spark ignition engine, the fuel is mixed with air and then inducted into the cylinder during the intake process. After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion. The expansion of the combustion gases pushes the piston during the power stroke.
Credit: Department of Energy
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Answer:
The bulb is not powered because the negative end of the battery is not connected to the electric current,making it dysfunctional. The electrons have to flow through the positive and negative ends of the battery in order for it to work.
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Answer:
43.7 °C
Explanation:
= Coefficient of linear expansion of brass = ![18\times 10^{-6}\ ^{\circ}C](https://tex.z-dn.net/?f=18%5Ctimes%2010%5E%7B-6%7D%5C%20%5E%7B%5Ccirc%7DC)
= Coefficient of linear expansion of steel = ![11\times 10^{-6}\ ^{\circ}C](https://tex.z-dn.net/?f=11%5Ctimes%2010%5E%7B-6%7D%5C%20%5E%7B%5Ccirc%7DC)
= Initial length of brass = 31 cm
= Initial length of steel = 11 m
= Total change in length = 3 mm
Total change in length would be
![\Delta L=\Delta L_b+\Delta L_s\\\Rightarrow \Delta L=L_{0b}\alpha_b\Delta T+L_{0s}\alpha_b\Delta T\\\Rightarrow \Delta T=\frac{\Delta L}{L_{0b}\alpha_b+L_{0s}\alpha_b}\\\Rightarrow \Delta T=\frac{0.003}{0.31\times 18\times 10^{-6}+11\times 10^{-6}\times 11}\\\Rightarrow \Delta T=23.7\ ^{\circ}C](https://tex.z-dn.net/?f=%5CDelta%20L%3D%5CDelta%20L_b%2B%5CDelta%20L_s%5C%5C%5CRightarrow%20%5CDelta%20L%3DL_%7B0b%7D%5Calpha_b%5CDelta%20T%2BL_%7B0s%7D%5Calpha_b%5CDelta%20T%5C%5C%5CRightarrow%20%5CDelta%20T%3D%5Cfrac%7B%5CDelta%20L%7D%7BL_%7B0b%7D%5Calpha_b%2BL_%7B0s%7D%5Calpha_b%7D%5C%5C%5CRightarrow%20%5CDelta%20T%3D%5Cfrac%7B0.003%7D%7B0.31%5Ctimes%2018%5Ctimes%2010%5E%7B-6%7D%2B11%5Ctimes%2010%5E%7B-6%7D%5Ctimes%2011%7D%5C%5C%5CRightarrow%20%5CDelta%20T%3D23.7%5C%20%5E%7B%5Ccirc%7DC)
![\Delta T=23.7\\\Rightarrow T_f-T_i=23.7\\\Rightarrow T_f=23.7+T_i\\\Rightarrow T_f=23.7+20\\\Rightarrow T_f=43.7\ ^{\circ}C](https://tex.z-dn.net/?f=%5CDelta%20T%3D23.7%5C%5C%5CRightarrow%20T_f-T_i%3D23.7%5C%5C%5CRightarrow%20T_f%3D23.7%2BT_i%5C%5C%5CRightarrow%20T_f%3D23.7%2B20%5C%5C%5CRightarrow%20T_f%3D43.7%5C%20%5E%7B%5Ccirc%7DC)
The final temperature is 43.7 °C