Answer:
power output = 30730.71 kJ/s
Explanation:
given data
pressure p1 = 10 MPa
temperature = 500° C
pressure p2 = 10 kPa
quality = 50.027 % = 0.50027
mass flow rate m = 15.469
to find out
power output in MW
solution
we know energy balance equation here that is
Energy (in) = Energy (out)
mh1 = P(out) + mh2
P(out) = - m ( h2 - h1) .................1
we know here h1 from steam table that is
h1 = 3375.1 kJ/kg and
hf = 191.81 and hfg = 2392.1 kJ/kg
h2 = hf + quality hfg
h2 = 191.81 + 0.50027 (2392.1) = 1388.50 kJ/kg
so from equation 1 we get power output
P(out) = - m ( h2 - h1)
P(out) = - 15.469 ( 1388.50 - 3375.1 )
power output = 30730.71 kJ/s
probrably at the schools website but i dont know what school you go to so i would need more info
Answer:
<h2>
206.67N</h2>
Explanation:
The sum of force along both components x and y is expressed as;
The magnitude of the net force which is also known as the resultant will be expressed as 
To get the resultant, we need to get the sum of the forces along each components. But first lets get the acceleration along the components first.
Given the position of the object along the x-component to be x = 6t² − 4;
Similarly,
Hence, the magnitude of the net force acting on this object at t = 2.15 s is approximately 206.67N
Work needed = 23,520 J
<h3>
Further explanation
</h3>
Given
height = 12 m
mass = 200 kg
Required
work needed by the crane
Solution
Work is the transfer of energy caused by the force acting on a moving object
Work is the product of force with the displacement of objects.
Can be formulated
W = F x d
W = Work, J, Nm
F = Force, N
d = distance, m
F = m x g
Input the value :
W = mgd
W = 200 kg x 9.8 m/s²x12 m
W = 23520 J
A.. in case of any problems that may occur you would know what company to call
