(NEED IMMEDIATE HELP/OFFERING 20 POINTS) You use a wedge that has a width of 1.1 in and a slope length of 3.3 in. What is the mechanical advantage of this wedge?

A. 2.2

B. 3

C. 4.5

D. 0.33

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.