Molecular Physics | Thermodynamics Answers

. A car undergoes a constant acceleration of 6.0 m/s2

starting from rest. In the first second, it travels ___?

Show that a monoatomic ideal gas undergoing adiabatic process PV^5/3 is equal to constant

A Carnot refrigerator rejects 2500 kJ of heat at 80°C while using 1100 kJ of work

4. A fluid moves in a steady flow manner between two sections in the same

flowline. At section 1: A = 0.10 m2, V, = 6 m/s, v1 = 0.33 m /kg. At

section 2: A2 = 0.2 m2, P2 = 0.27 kg/mº. Calculate for the velocity of flow

of section 2.

A. 37.63 m/s

C. 40.62 m/s

B. 33.67 m/s*

D. 46.02 m/s

3) Steam enters a turbine from a height of 6 m, at 50m/s speed at 2MPa pressure and 350C, and after 8.5kW heat loss to the environment, it exits the turbine at 0.1Mpa pressure, with a dryness degree of 0.92, from a height of A meter at a speed of 200m/s. (A indicates a single number height)

a) Develop the expression of the 1st Law of thermodynamics by analyzing the energy of this turbine.

b) Calculate the power of the turbine if the mass of the steam entering the turbine is 1.5kg/s.

4) At E C, 30mL of coffee is forgotten in a thermos glass. If fresh coffee is added to the cooled coffee at F C, the temperature of the coffee rises to GC under room conditions. Calculate the amount of coffee added to the thermos. A two-digit number ending in 0 or 5, where E < G < F)

1) a) What is the difference between open and closed systems, explain on 2 examples each.

b) Show the processes applied to an ideal gas on the P-V diagram with their names.

2) 10 kg of air is contained in a constant volume container at a temperature of AAC and a pressure of 150kPa. How much air is pressed into the container, its pressure is 250kPa and its temperature is BBC? (AA and BB are a two-digit number ending in 0 or 5)

A source containing a mixture of hydrogen and deuterium atoms emits light containing two closely spaced red colors at  = 656,3 nm whose separation is 0.18 nm. Find the minimum number of lines needed in a diffraction grating, which can resolve these lines in the first order.

The barometer of a mountain hiker reads 750 mbars

at the beginning of a hiking trip and 650 mbars at the end.

Neglecting the effect of altitude on local gravitational acceleration,

determine the vertical distance climbed. Assume an

average air density of 1.20 kg/m3.

Consider an ideal diatomic gas that performs a reversible thermodynamic cycle that consists of a succession of the following transformations.

A → B: isobar expansion from volume VA to the volume VB = 2 · VA;

B → C: isochoric transformation;

C → D: isobar expansion up to the volume VD = 3 · VA;

D → A: isothermal compression that closes the cycle.

Calculate the efficiency of this reversible cycle

Simple pendulum has its maximum speed at the ________