1- How many significant figures are there in the following numbers? 6856 0.0365 53.72 0.01332 4,600.00 500.1 620 2- Find the following. 820031 0.0190 a. Sum of 0.96, 19.5, 79.3, 23.724 b. Product of 645.78, 33.52 36300

2.2 Please help. Written on paper not typed on computer or keyboard please. Need help both questions. Please include all units, steps to the problem and information such as its direction or if it is in compression or tension. Thx.

A mechanic is supporting a car with a hydraulic lift. The smaller piston has radius of 3 inches and the larger piston has a radius of 11 inches. How many pounds of force must be applied to the smaller piston to support a car weighing 2500 pounds?  The pistons are located at the same vertical distance from the ground.  Neglect the weight of the pistons.

Find the total force A

answer coherently

Find the Total Force A

if a hydraulic system has a cylinder containing fluid trapped between two pistons with equal diameters, how much force would the output (second) piston create if 25 joules of pressure were applied to the input (first) piston?