Q: Air at 2 bar and 50°C is compressed at a constant pressure. Compression ratio; V1/v2=3 Determine the…
A: Let V1 and V2 denote the initial and final volume, P denote the pressure, T1 denote the initial…
Q: A certain metallic rod is found to have lengthened by 0.25% if the temperature is increased by 1000…
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Q: A closed container with constant volume insulated against heat is divided into two compartments by a…
A: Given: Compartment A: Weigh of water = 2 kg Pressure, PA = 800 kPa Temperature = 80o C = 273+80 =…
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A: It is experimentally seen that the heat required to raise the temperature of different substance is…
Q: Both the pressure and volume of a given sample of an ideal gas double. This means that its…
A: Pressure and Volume both are doubled
Q: 1. When objects are in thermal equilibrium, they have the same: O Energy O Gravity O Temperature…
A: Two objects are said to be in thermal equilibrium when they have same temperature. .
Q: A solid steel sphere of radius 50 cm is heated to 2000 K. If the sphere acts as a perfect radiator,…
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Q: When two cups of hot water of the same temperature are mixed, the water will have same temperature.…
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Q: TE-3 A metal bar changes length by 0.01000% for a temperature change of 400.0 °C. This means that…
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Q: Determine the change in volume of a block of cast iron 5.0 cm x 10 cm x 6.0 cm, when the temperature…
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Q: If the pressure of the gas is doubled (at constant temperature and number of moles), the volume of…
A: The ideal gas equation is given as, Here, Pressure denoted as P, Volume denoted as V, Temperature…
Q: The gas inside in a cylinder is heated, causing a piston in the cylinder to move outward. The…
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Q: If a gas is compressed at constant temperature, the volume of the gas will, a. increase O b.…
A: Compression in general means the application of force on an object (in this case gas) in order to…
Q: At 35 C. the length of the material made out of glass is 55 cm. After subjected to heat, the final…
A: Given: The intial temperature of the glass is 35oC. The initial length of the glass is 55 cm. The…
Q: Water at an average temperature of 23C flows through a 10-cm diameter pipe that is 2.5m long. The…
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Q: In general, have the smallest coefficients of both linear and volume expansion. * O solids O liquids…
A: The coefficient of linear expansion(α) is the rate of change of unit length for the one-degree rise…
Q: Liquid water turns out to have a higher density at 4C degrees than at any other temperature. What…
A: Thermal expansion coefficient describe the relation between the size of an object and change in the…
Q: 6. The relationship between the coefficient of volume expansion ß and the coefficient of linear…
A: We know the expression for cofficient of linear expansion is α =β2=γ3 So the realtion between…
Q: A circular hole of radius 1cm in brass sheet is kept at 293K. What will be the diameter of this hole…
A: The diameter of the circular hole is,
Q: Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as…
A: The formula used to calculate the heat energy is given as, Q=mcTf-Ti Here, m is the mass of samples…
Q: If a is the coefficient of linear expansion of a material at 0°C, the volume thermal- expansion…
A: The coefficient of linear thermal expansion is α We need to find the coefficient of Volume thermal…
Q: Concrete slabs of length 25 m are laid end to end to form a road surface. What is the width of the…
A: We know from the formula, dL = a * L0 * dT Where, dL is the width of the gap, a is thermal expansion…
Q: A steel measuring tape used by a civil engineer is 50metres long and calibrated at 20oC. The tape…
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Q: A fixed amount of an ideal gas is initially at a temperature of 25 °C. What will the new temperature…
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Q: is 9 A. A metal sphere has a coefficient of thermal expansion of at 20 °C x 10-6 °C-1. The internal…
A: Given Data: The coefficient of thermal expansion is, α=9×10-6 °C-1. The internal diameter is, d =…
Q: When gas in a container is expanded to twice its volume at constant temperature, the gas pressure is…
A: The ideal gas equation is, PV=nRTHere,P represents the absolute pressure,V represents the volume,n…
Q: The S.I. unit for temperature is Select one: a. Kelvin O b. Degree Fahrenheit c. Accumulated Thermal…
A: In the given question we have to find the S.I unit of temperature. Let's discuss some point…
Q: If a gas is compressed at constant temperature, the volume of the gas will, a.increase b.decrease…
A: The well known physicist Robert Boyle in 1662, stated that the pressure P of a given quantity of gas…
Q: Before During After What happens to the gas molecules once the enclosed gas is allowed to expand at…
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Q: In two component system the composition expressed as mole 2 points fraction because * temperature…
A: In two component system the composition expressed as mole fraction because of pressure dependence
Q: Which of the following substances has the least average coefficient of linear thermal expansion?…
A: We need to comment on which of the listed substances has the least average value of coefficient of…
Q: Which of the following is not a state variable? A) Pressure B) Heat C) Volume D) Temperature
A: The state variable is defined as the variable which depends only on the initial and final state…
Q: How many times faster helium diffuse than oxygen at room temperature.
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Q: The value of thermal conductivity _k_ depends upon O the area which is parallel to the heat transfer…
A: The value of thermal conductivity depends on ? Solution :-
Q: Heat can be transferred through a vacuum by which one or more of the following? conduction…
A: Given: Heat can be transferred through a vacuum by which one or more of the following methods.…
Q: 1 The initial length L, change in temperature AT, and change in length AL of four rods are given in…
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Q: An iron steam pipe is 200 ft long at 00What is the increase in length of the bar when heated to 1000…
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Q: A fixed amount of an ideal gas is initially at a temperature of 25 °C. To what temperature you need…
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Q: wer MUSL nave 2 significant figures) Below is the list of known coefficients of thermal expansion…
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Q: What will happen to the volume of a sealed object held at a constant temperature when the pressure…
A: 1). The volume will increase Since we know that PV = nRT If T is constant and we are decreasing…
Q: The rate of heat transfer through a slab of material with a constant temperature difference across…
A: Write the expression for the rate of heat transfer. Qt=kAT2-T1d
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- Compare the rate of heat conduction through a 13.0-cm-thick wall that has an area of 10.0 m2 and a thermal conductivity that of glass wool with the rate of heat conduction through a 0.750-cm-thick window that has an area of 2.00 m2, assuming the same temperature difference across each.Repeat the preceding problem, assuming the water is in a glass beaker with a mass of 0.200 kg, which in tum is in a calorimeter. The beaker is initially at the same temperature as the water. Before doing the problem, should the answer be higher or lower than the preceding answer? Comparing the mass and specific heat of the beaker to those of the water, do you think the beaker will make much difference?A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first omitting the negative sign and then thinking the temperature is Fahrenheit. That is, the person reads xC as xF . Oddly enough, the result is the correct Fahrenheit temperature. What is the original Celsius reading? Round your answer to three significant figures.
- A physicist makes a cup of instant coffee and notices that, as the coffee cools, its level drops 3.00 mm in the glass cup. Show that this decrease cannot be due to thermal contraction by calculating the decrease in level if the 350 cm3 of coffee is in a 7.00-cm-diameter cup and decreases in temperature from 95.0 to 45.0 . (Most of the drop in level is actually due to escaping bubbles of air.)An expensive vacuum system can achieve a pressure as low as 1.00107 N/m2 at 20.0 . How many molecules ale there in a cubic centimeter at this pressure and temperature?An engineer wants to design a structure in which the difference in length between a steel beam and an aluminum beam remains at 0.500 m regardless of temperature, for ordinary temperatures. What must the lengths of the beams be?
- As the very first rudiment of climatology, estimate the temperature of Earth. Assume it is a perfect sphere and its temperature is uniform. Ignore the greenhouse effect. Thermal radiation from the Sun has an intensity (the "solar constant" S) of about 1370 W/m2 at the radius of Earth's orbit. (a) Assuming the Sun's rays are parallel, what area must S be multiplied by to get the total radiation intercepted by Earth? It will be easiest to answer in tens of Earth's radius, R. (b) Assume that Earth reflects about 30% of the solar energy it intercepts. In other words, Earth has an albedo with a value of A=0.3 . In terms of S, and R, what is the rate at which Earth absorbs energy from the Sun? (c) Find the temperature at which Earth radiates energy at the same rate. Assume that at the infrared wavelengths where it radiates, the emissivity e is 1. Does your result show that the greenhouse effect is important? (d) How does your answer depend on the area of Earth?A sealed room has a volume of 24 m3. It's filled with air, which may be assumed to be diatomic, at a temperature of 24 and a pressure of 9.83104 Pa. A 1.00-kg block of ice at its melting point is placed in the room. Assume the walls of the room transfer no heat. What is the equilibrium temperature?When an air bubble rises from the bottom to the top of a freshwater lake, its volume increases by 80%. If the temperatures at the bottom and the top of the lake are 4.0 and 10 , respectively, how deep is the lake? `
- One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose a single-story cubical house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, by what percentage would the heating cost of the house drop? Take the house to have dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors, and assume that the interior is uniformly at one temperature and the exterior is uniformly at another.For the human body, what is the rate of heat transfer by conduction through the body's tissue with the following conditions: the tissue thickness is 3.00 cm, the difference in temperature is 2.00 , and the skin area is 1.50 m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)On a cold winter morning, why does the metal of a bike feel colder than the wood of a porch?