01) A. An ice cube of mass 60 g is taken from a freezer at -15 °C and dropped into 100 g of water at 80°C. What will be the final temperature of the mixture? The specific heat capacity of ice is 2.04 kJ/kg °C · specific latent heat of fusion of ice is 334 kJ/kg, the specific heat capacity of water is 4.18 kJ/kg/°C
Latent heat and phase change
A physical process in which a conversion among the basic states or phases of matter, i.e., solid, liquid, and gas takes place under the effect of a certain temperature and pressure is referred to as a phase change. Generally, the phase change of a substance occurs when heat transfer takes place between the substance and its surroundings. Based on the direction in which heat transfer takes place, different types of phase changes can occur.
Triple Point of Water
The branch of physics in which observer deals with temperature related properties is called thermodynamics.
Boiling Point of Water
Everyday examples of boiling is, boiling milk, heating water. One would have observed that when we heat water it goes through various stages and at one point bubbles show in water, and water keeps splashing with bubbles bursting, we in layman terms say that water is boiling.
Freezing Point of Water
In general, the freezing point of water is 0° Celsius, or 32° Fahrenheit. This is the temperature at which water will ordinarily change from its liquid state to its solid state (ice). However, there are certain conditions that can affect the freezing point of water. For example, a liquid may be supercooled or contain impurities so that it does not freeze at the ordinary freezing point.
01)
A. An ice cube of mass 60 g is taken from a freezer at -15 °C and dropped into 100 g of water at
80°C. What will be the final temperature of the mixture?
The specific heat capacity of ice is 2.04 kJ/kg °C · specific latent heat of fusion of ice is 334
kJ/kg, the specific heat capacity of water is 4.18 kJ/kg/°C
B. A sphere of radius 0.500 m, temperature 27.0 C, and emissivity 0.850 is located in an
environment of temperature 77.0 C. At what rate does the sphere (a) emit and (b) absorb
thermal
constant) = 5.67 x 10–8 W/m2 K
4
C. A copper rod 24 cm long has cross-sectional area of 4 cm2
. One end is maintained at
24°C and the other is at 184°C. What is the rate of heat flow in the rod? The heat
D. Below picture shows the composite wall block diagram. Calculate the thermal resistance of
each blocks of A, B and C. Draw the thermal circuit diagram for the below composite blocks
and hence find the heat flow rate at steady state in the given direction. Heat capacities of
materials A, B and C are 120 W/ m C, 40 W/ m C and 20 W/ m C respectively.
please give answers to all these questions. Because this is a one question. It is my humble request dear experts. Don't give unsuitable answers like copy paste answers and notes.
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