Physics, 03.03.2021 06:20 josehernamdez3035
What characteristics are shared by all alkali metals and alkaline earth metals?
1.They conduct electricity very well.
2.They form alkaline solutions when mixed with water.
3.They do not react with water at all.
4.They are strong and shiny.
Answers: 3
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Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above
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The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of
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An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
What characteristics are shared by all alkali metals and alkaline earth metals?
1.They conduct elec...
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