A girl walks from her home to a friends house 3 km north she then walks East 2 km to the post office then 1 km north to the library and 1 km east to the park from the park she walks 2 km west to the movie theater after the movie she works for kilometers south to the pet store what’s the girls displacement from her starting point to the pet store

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

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.