A car uses a fuel at a rate of 22 L/h and produces 55 kW of power. Calculate the efficiency of the car engine. The fuel has the following properties: heating value = 44000 kJ/kg density = 0.3 g/cm³ A) 65.2% B) 52.6% C) 68.1% D) 26.5% Calculate the shear force and bending moment at point B for the following beam loading: 4 kN 1.5 m 4 kN 1 m 1.5 m B ++ 5 m 3 m R₁₂ R₁ (A) V=3 kN, MB: 2 m = 3kN-m (B) V = 5 kN, M₂ = 3kN-m (C) VB = 5 kN, M₂ = 5kN-m (D) V=4 kN, M₂ = 4kN-m