Afreezer compartment is covered with a 3-mm-thick layer of frost at the time it malfunctions. if the compartment is in ambient air at 20°c and a coefficient of latex: h=\: 2\: \frac{w}{m^2.k}h = 2 w m 2 . k characterized heat transfer by natural convection from the exposed surface of the layer, estimate the time required (in seconds) to completely melt the frost. the frost may be assumed to have a mass density of 700 latex: \frac{kg}{m^3}k g m 3 and a latent heat of fusion of 334 kj/kg.

3h12min

Explanation:

We need to apply our thermodynamics concepts to find the required time in which the ice will melt at a given temperature.

In our data we have defined that,

Performing an energy balance you have to:

Internal energy is given by,

Integrating,

Replacing the values,

Note: It was assumed that fros is isothermal and the radiation exchange is also negligible.

answer:

the fed will purchase bonds from banks to inject money into the banking system. the banks can use these funds to provide loans to individuals and businesses.

explanation:

answer:

try looking it up that is always

explanation: