(1 point) a rectangular tank that is 4 meters long, 2 meters wide and 3 meters deep is filled with a rubbing alcohol that has density 786 kilograms per cubic meter. in each part below, assume that the tank is initially full, and that gravity is 9.8 meters per second squared. your answers must include the correct units.
(a) how much work is done pumping all of the liquid out over the top of the tank?
(b) how much work is done pumping all of the liquid out of a spout 2 meters above the top of the tank?
c) how much work is done pumping two-thirds of the liquid out over the top of the tank?
(d) how much work is done pumping two-thirds of the liquid out of a spout 2 meters above the top of the tank?

Ascientist studied a population of workers to determine whether verbal praise and/or tangible rewards affect employee productivity. in the study, some workers were offered verbal praise, some were offered tangible rewards (gift cards, presents, and some were offered neither. the productivity of each participant was measured throughout the study by recording the number of daily tasks completed by each employee. which inference might the scientists make based on the given information? a.) the number of daily tasks completed by each employee may influence the dependent variable, which is whether the employee receives verbal praise, tangible rewards, or neither. b.) verbal praise and/or tangible rewards may influence the independent variable, which is the number of daily tasks completed by each employee. c.) verbal praise and/or tangible rewards may influence the dependent variable, which is the number of daily tasks completed by each employee. d.) the dependent variables, which are verbal praise and tangible rewards, may influence the number of daily tasks completed by each employee.