Answer:
357.6 lb-ft
Explanation:
V = Volume = 8 ft³
dP = Change in pressure = (40-10) = 30 psig
Work done is given by
So, converting to ft-lb
The external work performed during the expansion is 357.6 lb-ft
The answers are as follows:
A.
False – Transformers are designed to work on AC
B.
True – This is to compensate the losses as the
length of wire increases
C.
Transformer – the transformer works in the
principle of electromagnetic induction
D.
Superconducting Magnet – magnet made from coils
of a superconducting wire
E.
Relay – This electrical switch is operated by a
magnet
Potassium undergoes beta (minus) decay to produce an electron and a calcium nucleus.
For a pipe open at both ends, fund frequency (Fo) given byFo = v /2L
v = velocity of sound = 340 m/s (at about 20ºC)
Fo = 340/2*5.34 = 31.8 Hz
While for the one closed at one end and open at the other end...
For a pipe open at one end, fund frequency (Fo) given byFo = v/4L
Fo = 340/4*5.34= 15.9 Hz
