Exercise 19
Calculate the voltage drop on each resistor and indicate the polarity of
the voltage drop on each resistor with the switch open, as indicated.
Next, calculate the voltage drop on each resistor and indicate the polarity
of the voltage drop on each resistor when the switch is closed.

Given:
Vb1 = 7V
Vb2 = 3V
R1 = 10K ohm
R2 = 5K ohm
R3 = 20K ohm
R4 = 15K ohm

Fluids at rest possess no flow energy. a)- true b)- false

A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.

Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer,e = 5 × 105?