A cylindrical tank has a height 8 m and a radius 2 m. Suppose the water tank is halffull of water. Determine the work required to empty the tank by pumping the water to the top of the tank. Use 1000 kg/m3 for the density of water and 9.8 m/s2 for the acceleration due to gravity.

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers