Astudent who weighs 500 newtons climbed the stairs from the first floor to the third floor,15 meters above, in 20 seconds. how much work did she do

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec