You are walking around your town. First you walk north from your startingposition and walk for 2 hours at 1 km/h. Then, you walk west for 1 hour at1 km/h. Finally, you walk south for 1 hour at 2 km/h. What is your newposition relative to your starting place?

What is the rate of change in a objects position?

Which of the following are guidelines to follow for obtaining accurate observations

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.