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Molecular Physics | Thermodynamics

A hyperthermic (feverish) male, with a body mass of 104 kg, has a mean body temperature of 107F. He is to

be cooled to 98.6F by placing him in a water bath, which is initially at 77F. Calculate what is the minimum

volume of water required to achieve this result. The specific heat capacity of a human body is 3.5 kJ/(kg·K). The

specific heat capacity for water is 4186 J/(kg·K). You must first find an appropriate formula, before substituting

the applicable numbers.

Molecular Physics | Thermodynamics

A 7.70-kg steel ball at 18.7°C is dropped from a height of 12.7 m into an insulated container with 4.50 L of water at 10.1°C. If no water splashes, what is the final temperature of the water and steel? The specific heat of steel and water is 450 J/(kg·K) and 4186 J/(kg·K) respectively.

Molecular Physics | Thermodynamics

A monatomic ideal gas at 27.0°C undergoes a constant volume process from A to B and a constant-pressure process from B to C.

where P1 = 2.70, P2 = 5.40, V1 = 2.70, and V2 = 5.40.

Find the total work done on the gas during these two processes.

Molecular Physics | Thermodynamics

2. The condensing pressure for a Rankine engine is 1 bar. Calculate the work net in KW and thermal

efficiency of the cycle when the steam at the beginning of expansion is at 50 bar and (a) saturated,

(b) 350 OC, and (c) 640 OC. Note: 1 bar is equal to 100 Kpa

Molecular Physics | Thermodynamics

1. Steam is generated at 4.1 Mpa and 440 OC and condensation occurs at 0.105 Mpa. For a Rankine

cycle operating between this limits, determine (a) heat supplied, KJ/kg, (b) heat rejection, KJ/kg,

(c) the Work net, KJ/kg, (d) thermal efficiency, and (e) what mass flow rate is required for a net

output of 30,000 KW? Kg/s

Molecular Physics | Thermodynamics

What is the total thermal energy of 1 mol of an ideal monatomic gas at a temperature of 0°C?

Molecular Physics | Thermodynamics

On a linear X temperature scale, water freezes at -125.00X and boils at 375.00 X.

On a linear Y temperature scale, water freezes at -70.000 Y and boils at -30.000

Y. A temperature of 50.000 Y corresponds to what temperature on the X scale?

Molecular Physics | Thermodynamics

What happens if gravity doesn't exist

Molecular Physics | Thermodynamics

It takes 880 J to raise the temperature of 350 g of lead from 0°C to 20.0°C. What is the specific heat of lead?

Molecular Physics | Thermodynamics

A system takes in 0.380 kJ of heat while it does 0.790 kJ of work on the surroundings. What is the change in internal energy of the system?