1000 molecules are bouncing between wells separated by enthalpy gaps H1=  1 ·10-20 J and H2 =  2 ·10-20 J. Considering multiplicities of each state write the partition function  and calculate the occupancies of states 2 and 3 at 300K and 370K

Q: A refrigerator using helium gas operates on the reversed cycle shown in the following figure. Assume…

A:

Q: 2. Is the Earth's magnetic field parallel to the ground at all locations? If not, where is it…

A:

Q: A skier/snowboarder starts at rest at the top of a snowy (friction-free) hill with height h1. After…

A: Given: Height of first hill = h1 Height of second hill = h2 Radius of curvature= R Mass of skier = m

Q: Caleb wants to create a block and tackle pulley system that lift a 500 N weight. He can apply a 100…

A: The weight is The applied force is Let the segments of the rope is

Q: 16. The tension in a guitar string is decreased by 12%. Compared to the string oscillating in its…

A: Tension in string is decreased by 12%First harmonic is given in both case.

Q: # 2. Electron moves from i to fin a uniform electric field as shown. Part 1: Does the electric field…

A:

Q: 84. A shock absorber is designed to quickly damp out the oscil- lations that a car would otherwise…

A: The mass of the car is The spring constant is

Q: A sign hangs from a wall, as shown. The upper left corner is supported by a pin joint, firmly…

A:

Q: The figure shows a composite slab with dimensions d₁ = 11.2 cm, d₂ = 2.93 cm, and d3= 13.6 cm. Half…

A:

Q: The Hubble Space Telescope (HST) orbits Earth at an altitude of 613 km. It has an objective mirror…

A: The distance of the telescope from the earth's surface is The diameter of the objective mirror is…

Q: Bats of the Vespertilionidae family detect the distance to an object by timing how long it takes for…

A: Distance of object from bats D = 36.7cm = 0.367mSound pulse is 3ms long and 70ms apart.

Q: 1 If the magnetic field of a light wave oscillates parallel to a y axis and is given by By = Bm…

A: The equation of the magnetic field oscillating parallel to y-axis is

Q: نة = 4 hy m= L=1m 2a = L

A:

Q: Chapter 3, Problem 1. One mole of an ideal monatomic gas is expanded from an initial state at 3 bar…

A: Gas is monoatomic.

Q: In the figure a small circular hole of radius R = 1.57 cm has been cut in the middle of an infinite,…

A:

Q: O OD C #2. Electronmoves from i to fin a uniform electric field as shown. Part 1: Does the electric…

A:

Q: The pendulum consists of a plate having weight Wp and a slender rod having weight W.. Determine the…

A: The pendulum consists of a plate having weight Wp and a slender rod having weight Wr

Q: In the figure, battery B supplies 24 V. Find the charge on each capacitor first when only switch S1…

A: The voltage of battery supplies V=24 V Capacitance

Q: 42. • A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and…

A: To calculate the mass of the grapes,needed formula: T=2π where, T= time period, m=mass, k=spring…

Q: An airplane flies 200 km due west from city A to city B and then 285 km in the direction of 33.0°…

A:

Q: (numbers 3-4) Trucks 1 and 2 each have a siren emitting a pure tone of 600 Hz. Truck 1 remains…

A:

Q: A long straight current-carrying wire runs from north to south. A compass needle is placed above the…

A:

Q: Four identical metallic spheres with charges of +9.0 μC, +6.6 µC, -1.8 μc, and -5.2 µC are placed on…

A: The charges are;The charge on electron is

Q: are sliding toward one another (see figure below). Initially, bumper car 1 is traveling to the east…

A:

Q: horizontal force of 5.0N pushes a 0.50kg block against a verticalwall. The block is initially at…

A:

Q: A 25g ball is released from rest 80m above the surface of the Earth. During the fall the total…

A: Mass (m) = 25 g Height (h) = 80 m Thermal heat produced (Q) = 15 J

Q: The fundamental frequency of an organ pipe, closed at one end, is 251.3 Hz What is the…

A: Fundamental frequency is given as Speed of sound is Initial temperature (Room Temperature) Final…

Q: A portion of a circuit is shown in the figure, and the batteries have no internal resistance. What…

A: Current, I = 5 AResistance, R = 10 ΩVoltages are 8 V and 13 V. VA - VB = ?

Q: In the figure below, which of the following equations is correct according to the first condition of…

A: Angle made with horizontal and T1 is 60°.Angle made with horizontal and T2 is 30°.We have to find…

Q: A thin rod initially lies at rest along the ?x axis with one end at ?=−1.7m and the other end at…

A:

Q: A 250-gram mass is placed on a vertically oriented spring that then is stretched 0.3 meters below…

A: Mass of object, m = 250 gm = 0.250 kg Stretch in spring, y = 0.3 m Spring constent K= 125N/m

Q: Conducting spheres X and Y are shown bellow, where X has twice the diameter as Y. Sphere X has an…

A:

Q: B) A machine of mass 20kg is mounted on four springs, one at each corner, and can be regarded as a…

A: Machine mass = 20 kgSprings deflects = 0.1mmForce applied = 2.5N

Q: 3f # 20. An object is a distance from a convex lens. 4 (a) Use a ray diagram to find the approximate…

A: Focal length=fObject distance=3f/4

Q: 016. Figure 7 shows two concentric non-conducting spherical shells of radii r = 12.0 cm and r2 =…

A:

Q: please check your answer for part e)? My answer was:  1.53E5 J If possible, please indicate what…

A:

Q: In the figure an array of n parallel resistors is connected in series to a resistor and an ideal…

A:

Q: Write each of these values in scientific notation. Enter each answer with one digit before the…

A:

Q: Vectors:  A diver explores a shallow reef off the coast of Belize. She initially swims d1 -> = 80.7…

A:

Q: 18 For the circuit shown in the figure, what current does the ideal ammeter read in (mA)? 90.00 100…

A:

Q: An ultrahigh-vacuum system operates at a pressure of 10³ Pa. What is the concentration of residual…

A: The concentration of residual air molecules in an ultrahigh-vacuum system can be estimated using the…

Q: If mass of box is 50 kg,force P =100 N, and coefficient of friction =0.3,Does the box will tip or…

A:

Q: 18. A hydraulic lift is made by sealing an ideal fluid inside a container with an input piston of…

A:

Q: d O Four straight wires are positioned at the corners of a square, d= 5.50 cm apart as shown above.…

A:

Q: Ocean waves 1.6 meters apart are moving towards the beach with a speed of 3.2 meters/sec. You are in…

A: Given : The distance between ocean wave is , 1.6 mSpeed of ocean wave is 3.2 m/s  Speed of boat 12…

Q: Part 1 Find the speed an alpha particle requires to come within 4 x 10-14 m of a gold nucleus.…

A:

Q: Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the…

A:

Q: A proton is located at the origin, and a second proton is located on the x-axis at x₁ = 5.12 fm (1…

A:

Q: Part A Determine the towing force Frequired to move the car if the back brakes are locked, and the…

A:

Q: An ice block of mass 1.2000000000000002 kg at an initial temperature of –11 ∘C is put into a copper…

A: Mass of ice is Initial temperature of the ice is Mass of copper is Quantity or mass of water is…

Ising model of Ferromagnets

The Ising model is one of the easiest and most famous theoretical models for ferromagnetism in statistical mechanics. When a group of atomic spins aligns such that their magnetic moments are pointed in the same direction and produce a strong permanent magnetic moment in macroscopic size, the phenomenon is called ferromagnetism. The relative permeability of these magnets is greater than unity and increasing magnetization with the applied external field. Even in the absence of an external magnetic field, these substances retain spontaneous magnetization. An example of ferromagnets is iron.