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3 years ago

5

Pedro is planning to model how changes in weather affect evaporation from lakes for his first experiment he wants to test how hu

midity affects the evaporation rate. he places one beaker with 300 mL of water in a dry area. and places another beaker with 300 mL of water near a humidifier which of the following variables does Pedro need to control during his experiment
A. humidity only
B. humidity and evaporation rate
C. volume of water and tempature
D. volume of water only

1 answer:

Valentin [98]3 years ago

6 0

Answer:

C. volume of water and temperature

Explanation:

a p e x

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The diagram for this question is shown on the first uploaded image

At Equilibrium the summation of the of force on the vertical axis is zero

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Since The speed at both A and B nozzle are the same then $v_2$ remains the same

Substituting values

$F_x sin30^o =1000 (0.5) (44.23 - 7.07*sin30)$

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Hence the force acting on the flange bolts required to hold the nozzle in place is

$F = \sqrt{F_x^2 + F_y^2}$

$= \sqrt{40.69 ^2 + 21.99^2}$

$F= 46.25kN$

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