Crazy Guy what do uh mean ?
Answer:
The mass flow rate of cooling water required to cool the refrigerant is
.
Explanation:
A condenser is a heat exchanger used to cool working fluid (Refrigerant 134a) at the expense of cooling fluid (water), which works usually at steady state. Let suppose that there is no heat interactions between condenser and surroundings.The condenser is modelled after the First Law of Thermodynamics, which states:



The mass flow rate of the cooling water is now cleared:

Given that
,
,
and
, the mass flow of the cooling water is:


The mass flow rate of cooling water required to cool the refrigerant is
.
Answer:
4.83m/
Explanation:
For a particle moving in a circular path the resultant acceleration at any point is the vector sum of radial and the tangential acceleration
Radial acceleration is given by
r
Applying values we get
X0.3m
Thus 
At time = 2seconds 
The tangential acceleration is given by 



Thus the resultant acceleration is given by


It is a metal because is saying that is a manually device