Technician A says that high HC emission levels are often caused by a fault in the ignition system. Technician B says that high CO 2 emissions are usually caused by richer-than-normal air-fuel mixture. Which technician is correct?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?