Answer:
The maximum theoretical height that the pump can be placed above liquid level is 
Explanation:
To pump the water, we need to avoid cavitation. Cavitation is a phenomenon in which liquid experiences a phase transition into the vapour phase because pressure drops below the liquid's vapour pressure at that temperature. As a liquid is pumped upwards, it's pressure drops. to see why, let's look at Bernoulli's equation:

(
stands here for density,
for height)
Now, we are assuming that there aren't friction losses here. If we assume further that the fluid is pumped out at a very small rate, the velocity term would be negligible, and we get:


This means that pressure drop is proportional to the suction lift's height.
We want the pressure drop to be small enough for the fluid's pressure to be always above vapour pressure, in the extreme the fluid's pressure will be almost equal to vapour pressure.
That means:

We insert that into our last equation and get:

And that is the absolute highest height that the pump could bear. This, assuming that there isn't friction on the suction pipe's walls, in reality the height might be much less, depending on the system's pipes and pump.
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Answer:
VR Prototyping
VR Prototyping Can Save you Thousands of Dollars.
Explanation:
there you go lad
Birdie's company will make a profit of $30,000 if she sells 3,000 gloves at the $15 price.
Step-by-step Solution:
Break even point= fixed cost/ selling price - variable cost
here the fixed cost is= $20,000
selling price= $15 and variable cost = $5
BEP= 20,000/ 15-5= 20,000/10= 2000 units
b. if they sell 3000 gloves, the contribution profit will be
total revenue= 3000*$15= $45,000
contribution= selling price- variable cost, 15-5= $10 per unit
the profit is= 3000*$10= $30,000
What is variable cost?
A variable cost is one that varies in relation to either the volume of production or the number of services provided. There should be no variable costs if no production or services are provided. Variable costs should rise in tandem with increases in production or services.
To learn more about Profit Calculation, visit: brainly.com/question/28177180
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