Aforce vec f =f x hat i +f y hat j acts on a particle that undergoes a displacement of vec s =s x hat i +s y hat j where f x =7 n , f y =-3 n , s x =4 m , and s y =1 m . find the work done by the force on the particle . answer in units of j.

Natural forces that can alter ecosystems include seasons and climate changes. t or f

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.

Ways that industry and agriculture use physical properties to separate substances