Assume the cycle thermal efficiency is the same as part f) and the volumetric efficiency is 1.7 for a certain operating condition with engine speed at 1500 rpm. each cylinder has one injector and each injector has 6 nozzle holes with a diameter of 200 micrometer. the discharge coefficient of the injector nozzle is 0.75. if the injection pressure is 1200 bar across the injector nozzle, and the injection duration is 8 crank angle degrees. what will 2 be the air-fuel ratio and imep assuming 98% combustion efficiency? fuel density is 800 kg/m3 . heating value of the fuel is = 42500

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Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge