3. Concrete sidewalks are always laid in sections, with gaps between each section. For example, the figure shows five identical 5.30-m sections, the outer two of which are against immovable walls. The four identical gaps between the sections are provided so that thermal expansion will not create the thermal stress that could lead to cracks. What is the minimum gap width necessary to account for an increase in temperature of 40 °C? X 0.265| cm Gap

Q: 4. The drawing shows a composite slab consisting of three materials through which heat is conducted…

A: The temperature difference through slab 1 (∆T1)=65-45=20 oC The temperature difference through slab…

Q: 1. A wire that is 6.0 m long at 30°C is found to increase in length by 2.25 cm when heated to 700°C.…

A: Given(s): Original length, L0=6.0 m Change in temperature, ΔT=700-30=670 oC Change in length,…

Q: 2. The drawing shows two thin rods, one made from aluminum [a = 23 x 10-“ (C)'] and the other from…

A:

Q: 1. Which one of the following statements correctly describes the Celsiusand the Kelvin temperature…

A: It is known that, The ice point in Celsius scale is, TIC=0oC The steam point in Celsius scale is,…

Q: 4. A well-insulated styrofoam bucket contains 143 g of ice at 0 °C. If 21 g of steam at 100 °C is…

A:

Q: # 1 You have been working in the laboratory to develop a new material called DrS45. In an…

A:

Q: d styrofoam bucket contains 148 g of ice at 0 °C. If 21 g of steam at 100 °C is injected into the…

A: We know that the heat transfer from the object is given as  Q = mc∆T  where m is the mass  C is the…

Q: 3. Calculate how much conduction heat is transferred through a cylindrical pipe of 1 m length with…

A: 3. The radius of the cylinder is, r=d2=60 mm2=30 mm0.001 m1 mm=0.03 m The area of the cylindrical…

Q: **26. An 85.0-N backpack is hung from the middle of an aluminum wire, as the drawing shows. The…

A: Using the equation to find the tension in the wire 2* T * sin (φ) = m * g   T = m∙g / (2∙sin(φ))…

Q: (1) Suppose a person is covered head to foot by wool clothing with average thickness of 2.5 cm and…

A: Given values: Thickness of the wool clothing (Distance between the isothermal planes), d=2.5 cm…

Q: 4. You have 1 kg of water and you want to use that to melt 0.1 kg of ice. What is the minimum…

A: Given data: The mass of water is m=1 kg. The mass of ice is m'=0.1 kg.

Q: Q2/ The rigid bar ABCD is supported by a pin at B and restrained by identical steel bars at C and D,…

A:

Q: 5) The New River Gorge bridge in West Virginia is a steel arch bridge 518 m in length. How much does…

A:

Q: Attached Question:

A: L = 12 m T = - 1.85 C  T' = 34.3 C  Y = 200 x 106 Pa α = 12 x 10-6 /C

Q: At 68°F, an aluminum ring has an inner diameter of 5.000 cm, and a brass rod has a diameter of 5.050…

A: Given Temperature of the aluminum ring and a brass rod is T = 68°F by converting the temperature of…

Q: 11. The emissivity e of object B is , that of object A, although both objects are identical in size…

A: emissivity of B  1/16 of emissivity of A

Q: 3. The rail roads are usually made of steel material segments with a 10 m long. Between each…

A: Given data: The length of the railroad is l=10 m The initial temperature is T1=-20°C The final…

Q: 1. As Styrofoam box used to keep drinks cold at a picnic has a wall thickness of 9 cm. it's filled…

A: SOlution: thickness t= 9 cm ice temperature T1 = 0 degee C outside temperature t2 = 38 degree C heat…

Q: 1) The walls of a house are 16 cm thick and have an average thermal conductivity three times that of…

A: A wall, Area of cross section, A = 1350000 cm2 Thickness of wall, d = 16 cm Thermal conductivity, K…

Q: Question 3: At a particle accelerator facility, a 16000kg detector is to be installed on top of four…

A: This question is based on Thermal Properties of matter topic and also involves the concept of…

Q: 1. When the temperature of a coin is raised by 78 °F, the coin's diameter increases by 2.10 x10-3 m.…

A: The coefficient of linear expansion is calculated by using the formula αL=1L∆L∆T , where ∆L is the…

Q: The newly constructed bridge in your town is a steel arch bridge 600 m in length. How much does the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 42. (II) A 100-W lightbulb generates 95 W of heat, which is dissipated through a glass bulb that has…

A: Given: Rate of heat flow, Qt=95 W The thickness of the bulb, d=0.50 mm=0.0005 m The radius of the…

Q: 1. What's your normal body temperature? It may not be 98.78* F, as the oft-quoted average was…

A: Difference of 180Fo is equivalent to difference of 100Co ∴Difference of 1Fo is equivalent to…

Q: 4) In an insulated vessel, 250 g of ice at 0°C is added to 600g of water at 18°C. 1. What is the…

A: Given: Mass of ice (Mi) = 250 gm. Latent heat of melting (Lm) = 333 kJ/kg. Mass of water (Mw) = 600…

Q: If a copper kettle has a base of thickness 2 mm and area 3 x 10^-2 m², estimate the steady…

A: Given, Thickness t=2 mm Area A=3 x 10-2 m2 mass m=1 kg rate of temperature= 0.25 K s-1 Thermal…

Q: (9%) Problem 9: Suppose a human body's core internal temperature is 37.0°C, the skin temperature is…

A: Given data The internal temperature is given as Ti =37°C. The skin temperature is given as Ts…

Q: 3. In an experiment to determine the thermal conductivity of a bar of a new alloy, one end is…

A:

Q: 1. A brass plug has a diameter of 100 mm at 150 °C. At what temperature will the diameter be at…

A: original diameter = 100 mm orifinal temperature = 150 C final diameter = 9.95 cm  = 99.5 mmα = 19 *…

Q: (1a). Black body has emissivity value of 1, but in reality, the emissivity of real objects is less…

A:

Q: 1) The walls of a house are 11 cm thick and have an average thermal conductivity two times that of…

A: Since you've asked multiple questions, we will solve the first question for you. If you want any…

Q: 1. What is the final temperature when a 3.0 kg gold bar at 99 °C is dropped into 0.22 kg of water at…

A:

Q: 1. Most automobiles have a coolant reservoir to catch radiator fluid that may overflow when the…

A:

Q: Concrete sidewalks are always laid in sections, with gaps between each section. For example, the…

A: Write the coefficient of linear expansion of concrete.