2. A pump with a power output of 600 W raises water from a lake through a height of 3.0 m and delivers it with a velocity of 6.0 ms-1. What mass of water is removed from the lake in one minute? Answer is 750kg but I don't know how to get the answer.

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b