When you use a hand pump to inflate the tires of your bicycle, the pump gets warm after a while. Why? What happens to the temperature of the air in the pump as you compress it? Why does this happen? When you raise the pump handle to draw outside air into the pump, what happens to the temperature of the air taken in? Again, why does this happen?

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: Figure 2 showed an ideal gas is slowly compressed at a constant pressure of 2.0 atm from 10 L to 2.0…

A:

Q: The coefficient of linear expansion a for some common materials are listed Material a (1/ °C) in the…

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Q: The coefficient of linear expansion a for some common materials are Material a (1/ °C) listed in the…

A: The formula for linear expansion is ∆L=αLTf-Ti , where ∆L=0.000268 m is the increase in length , αP…

Q: Most cars have a coolant reservoir to catch radiator fluid that may overflow when the engine is hot.…

A: The volume of a substance in terms of its temperature can be given by

Q: Why do we put the small beaker into the larger beaker and pack it with ice, so that the small beaker…

A: The  small beaker is put into larger beaker. The layer between both beaker is filled with ice.

Q: 1. A 8 kgs gas contained in a vertical piston cylinder assembly is shown in the figure below. The…

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Q: Two rooms, each a cube 4.0m per side share a 14 Cm thick brick wall. Because of a number of 100 W…

A: Side , s = 4 m Thickness , d = 14 cm = 0.14 m Power of bulbs , P = 100 W Temperature of hot room ,…

Q: A closed system consisting of 2 lb of a gas undergoes a process during which the relation between…

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Q: A 10-gram ice cube at 0° C is dropped into 100 grams of water at 10° C. The water and ice cube are…

A: Given data: Mass of the ice (mi) = 10 gram = 0.01 kg Mass of the water (mw) = 100 gram = 0.1 kg…

Q: What appliance can actually cool a room? A refrigerator with the door open, an air conditioner in…

A: What appliance can actually cool a rom?

Q: Most cars have a coolant reservoir to catch radiator fluid that may overflow when the engine is hot.…

A:

Q: 5. If the lengths of two bars of different solids are inversely proportional to their respective…

A: Given:-  If the lengths of two bars of different solids are inversely proportional to their…

Q: A car weighing 1.30×10^3 kg reduces its speed with strong braking from 130 km/h to 90.0 km/h. By how…

A: SOlution: Given that M = 1.3 x103  kg V1 = 130 km/h v2 = 90 km/h m = 6 kg C = 450 J/kgK

Q: A chamber with a fixed volume of 1.0 m contains a monatomic gas at 3.000 x 10 K. The chamber is…

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Q: Is a uniform-temperature gas more or less orderly than one with several different temperatures?…

A: When the gas is at the uniform temperature the temperature of each molecule is the same and thus…

Q: Suppose you have 2.86 moles of an ideal gas. What is the average kinetic energy of that gas (in…

A: number of moles of ideal gas (n) = 2.86Temperature (T) = 279.1 K

Q: an expansion of gas, 500 J of work are done by the gas. If the internal energy of the gas increased…

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Q: Four moles of gas have internal energy 5000 J. Calculate its temperature. Find its temperature and…

A: Given  The number of moles of the gas is n = 4 mol. The internal energy is U = 5000 J. The internal…

Q: After heating a 0.065kg of Iron to 525degree celsius the energy absorption registered by the 45 kJ.…

A: Given: The final temperature of the iron is 525oC. The heat absorbed by the iron is 45 kJ. The mass…

Q: On a winter day, you turn on your furnace and the temperature of the air inside your home increases.…

A: Step 1As the temperature is increases, the air expands. Due to this, some air leaks to the outside,…

Q: 28) When a gas expands adiabatically, A) the temperature of the gas remains constant. B) work is…

A: From the first law of thermodynamics, dU = dQ - dW When the gas expands adiabatically, for an ideal…

Q: Engine valves (cp = 440 J/kg·K and r = 7840 kg/m3) are to be heated from 40°C to 800°C in 5 min in…

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Q: In a thermally isolated environment, you add ice at 0°C and steam at 100°C. (a) Determine the amount…

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Q: Your neighbor has circular steel lid for his well. The lid has an outer diameter of 0.909 m. The…

A: The expansion in area with temperature is given by ∆A=Aiα∆TWhere α is linear expansion, ∆T is change…

Q: Consider the figure attached. An illustration of a circular steel casting with a gap. (a) If the…

A: (a) The change in the length of a metal depends on the change in the change. If the temperature…

Q: What happens to the average kinetic energy of the water molecules in your body when you have fever?

A: The average kinetic energy of a substance's particles is proportional to its temperature. When a…

Q: Aside from being transparent, why are laboratory apparatus such as graduated cylinder, beakers, and…

A: Laboratory apparatus such as graduated cylinder, beakers, and flasks made up of glass Borosilicate…

Q: In warm regions where tropical plants grow but the temperature may drop below freezing a few times…

A: In winters when the temperature may drop below freezing point a few times in tropical regions, the…

Q: Is it possible to increase the temperature of a gas without adding heat to it? If so how?

A: Yes, it is possible to increase the temperature of a gas without adding heat to it. For an adiabatic…

Q: If the lengths of two bars of different solids are inversely proportional to their respective…

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Q: 53. At the start of a trip, a driver adjusts the absolute pressure in her tires tobe 2.81 3 105 Pa…

A: Given Data: The initial pressure is, Pi = 2.81 x 105 Pa. The final pressure is, Pf = 3.01 x 105 Pa.…

Q: The engine of a Mercedes-Benz automobile has an intake air of 20 degrees Celsius and compresses it…

A: Given that                  The initial temperature T1 = 20°C = 20+273 = 293K let us assume that the…

Q: Why would you not expect all the molecules of air in your room to have the same average speed?

A: In the given question we have to discuss about why all the molecules of air in our room to have not…

Q: Hole B.0 mm diameter Steel bar 2.0m Fixed restraining pillars Apparatus viewed from above Fig. 1 Pin…

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Q: An aluminum cylindrical container has an overall surface area of 0.2 m² and a wall thickness of 50…

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Q: 7. A balloon filled with of 1.0 g of hydrogen is in thermal equilibrium with air in a room. Root…

A: Root mean square speed, Vrms=500 m/s Average molecular mass, M=29 g/mol=29×10-3 kg/mol Root mean…

Q: If you squeeze an air filled balloon and no heat escapes, what happens to the internal energy of gas…

A: Explanation:

Q: If you have a cup of coffee which is too hot to drink, should you add cream to it immediately to…

A: If you have a cup of coffee and the objective is to cool it faster, then you should not add cream to…

Q: The figure shows a 50 kg lead cylindrical piston which floats on 0.68 mol of compressed air at 30°C.…

A: Given, Mass of cylindrical piston = 50kg Initial temperature= 30°C = 303K Final temperature= 300°C=…

Q: Your car’s radiator is made of steel and is filled with coolant. You fill the radiator to the very…

A: Coefficient of volume expansion of the standard coolant of the vehicle is βcoolant=410×10-6 /°C and…

Q: Imagine a system composed of two different types of molecules, one relatively light and one…

A: The problem is based on kinetic theory of gases. To solve the given question we will determine the…

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

A: Given:  V = 16 L  T = 10 degree C  T' = 95 degree C  β = 400×10 – 6 / ºC