*93. Concrete sidewalks are always laid in sections, with gaps between each section. For example, the drawing shows three identical 2.4-m sections, the outer two of which are against immovable walls. The two 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 32 C°?

Q: what is its temperature in degrees Fahrenheit when the desired temperature increase has been…

A: An object’s temperature can be converted from Fahrenheit to Celsius as, Here, TC and TF represent…

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: 6) Use the 3 relations (equations) below to relate T(°F) to T(°C). Then, find out, at what…

A:

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

A:

Q: 1. Bob is an engineering student who has designed a bridge made completely out of steel. The bridge…

A: 1)length of bridge at lowest recorded temperature of -30oC = 900 m Coefficient of linear expansion…

Q: Review Conceptual Example 5 before attempting this problem. To illustrate the effect of ice on the…

A:

Q: A bar of gold is in thermal contact with a bar of silver of the same length and area as shown in the…

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: **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: How many grams of coffee must evaporate from 350 g of coffee in a 100-g glass cup to cool the coffee…

A: Net heat transferred from the system is zero

Q: A 15.6 g bullet traveling horizontally at 867 m/s passes through a tank containing 14.4 kg of water…

A: The formula for the kinetic energy is: The formula for the heat added/released to a substance is:

Q: #5. As part of a new seal hunting stategy, on a balmy –5.00 °C day I drill a circular hole in the…

A: Write the expression of the final area. ∆A=2αAi∆T

Q: A 82.2-N backpack is hung from the middle of an aluminum wire, as the drawing shows. The temperature…

A: A 82.2-N backpack is hung from the middle of an aluminum wire, as the drawing shows. The temperature…

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: A 2.0 kg metal head of a geology hammer strikes a solid rock with a speed of 4.0 m/s. Assuming all…

A:

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: A stainless-steel-bottomed kettle, its bottom 28 cm in diameter and 2.2 mm thick, sits on a burner.…

A: Write the given values with the suitable variables. d=28 cm=0.28 mt=2.2 mm=2.2×10-3 mQ˙=900 Wk=14…

Q: The George Washington Bridge crosses the Hudson River in New York. The span of the steel bridge is…

A: Due to variations in temperature there is variation in length of an object, for different objects…

Q: Constants I Peri A 30.5 g glass thermometer reads 27.1 °C before it is placed in 145 ml of water.…

A: The mass of the glass, mglass=30.5 g   The temperature of the glass, Tg=27.1°C   The mass of the…

Q: QUESTION 6 A 5.0-m-long steel girder in a bridge is exposed to a surrounding temperature of 680 F.…

A:

Q: An aluminum wing on a passenger jet is 32 m long when its temperature is 27°C. At what temperature…

A: Given value--- Change in length = 0.02 m. initial length = 32 m. thermal expansion coefficient…

Q: **102. A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of…

A: The angular speed of wheel, ω∘ = 18 rad/s Initial temperature, Ti = -100 0C Final temperature, Tf =…

Q: A food chemist is testing out a new calorimetry device that measures the caloric value of their…

A: Write the information given in the question.

Q: Two concrete spans of a 220-m-long bridge are placed end to end so that no room is allowed for…

A: The initial length of the one span is

Q: The height of the Washington Monument is measured to be 170 m on a day when the temperature is…

A: Length of monument at 39 degree celsius (L) = 170 m New temperature = -16.5 degree celsius

Q: The height of the Washington Monument is measured to be 170 m on a day when the temperature is…

A:

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

A:

Q: (i) If the temperature of any object is 83.12°F then calculate its value in "C (a) – 18.88 (b) 28.4…

A: Given data:  Temperature (TF) = 83.12 °F Required: Temperature in °C

Q: 2. (a) A wire that is 1.50m long 20°C is found to increase its length by 1.9cm when warmed to 420⁰…

A: Given: The initial length of the wire is 1.5 m. The initial temperature is 20oC. The increment in…

Q: Problem 4: The height of the Washington Monument is measured to be 170 m on a day when the…

A: Given data:  Original Height (h0) = 170 m Initial temperature (T0) = 35.0°C Final temperature (T) =…

Q: Question 18: A metal object which is at temperature T is kept in a completely evacuated chanber that…

A: Answer: The value of α = 4

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: If you pour 0.0100 kg of 20.0 °C water onto a 1.20-kg block of ice (which is initially at −15.0 °C…

A:

Q: 10) A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the…

A:

Q: Question 18: A metal object which is at temperature T is kept in a completely evacuated chasber that…

A: Answer  option(a) 1

Q: Suppose you pour 0.0125 kg of 20.0°C water onto a 1.1-kg block of ice, sitting in a large bowl,…

A: mass of water= 0.0125 kg initial temperature of water,Twater = 20.0°C  mass of ice block=1.1-kg…

Q: A bar of gold (Au) is in thermal contact with a bar of silver (Ag) of the same length and area (Fig.…

A: Given:Length and area of gold and silver bars are equal. Temperatures of their end are given.

Q: Problem 10: You read in a popular diet blog that the author claims you can lose up to half a pound…

A: First we have to calculate the heat required to melt ice and to make water warm up to 37 degree…

Q: A 15.0 g bullet traveling horizontally at 865 m/s passes through a tank containing 13.5 kg of water…

A: The mass of the bullet, mb=15.0 g=15.0×10-3 kg   The initial velocity of the bullet, v1=865 m/s…

Q: here is release of heat when the final temperature is _____ (higher/lower) than the initial…

A: when temperature is higher it means energy is higher so it will loss energy to come to lower energy…

Q: A wire that is 1.50 m long at 25°C is found to increase in length by 1.90 cm when warmed to 420°C.…

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

Q: SKIN temperatures (57 C)the iatent neat or vap moi water ny of watch p=998.2 kg/m'. 3. Assume that…

A: (3) The rate of conduction of heat transfer per hour through a material is,

Q: 4) A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir under…

A: Rate of heat conduction (R) , depends upon diameter (D) , length (L) as shown. (Given, R = 25W) R =…