An insulated rigid container belonging to a kitchen blender is used to make a smoothie by liquidising some fruit, yogurt, honey and juice that together have a mass of 0.75kg and can be considered to have average specific heat capacity of 4.2 k] /kg K. a) Draw a sketch of the blender and its contents and show the energy transfers across an appropriate system boundary for calculating the temperature rise in the smoothie ingredients when the blender is switched on. b) Use the firstlaw of thermodynamics for a system to calculate the temperature rise in the smoothie ingredients after the blender blades have been powered for 5 minutes if the blender has a power rating of 500W and can be assumed to have an efficiency of 25%. [Answer: 12C]