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Temperature

Work done on gas, entropy changes, temperature.

1. A 4 L sample of a diatomic gas with specific heat ratio 1.4, confined to a cylinder, is carried through a closed cycle. The gas is initially at 1 atm and 300 K. First, its pressure is tripled under constant volume. Then, it expands adiabatically to its original pressure. Finally, the gas is compressed isobarically to its

Solving for Temperature

Question: Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in kelvins must. a. Quadruple b. Reduce to one fourth its original value c. Reduce to one half its original value d. Remain unchanged. e. Double

Consider a flat steel plate

Consider a flat steel plate with a hole through its center. when the plates temperature is decreased, the whole will a. expand b. expand if it takes up less than half the plates surface area c. contract only if it takes up more than half the plates surface area d. contract

Matrix inversion; temperature node distribution

Please show all the work. The matrix inversion method has to be shown in detail, the formula used in the class for temperature node distribution was Tm+1,n + Tm-1, n + Tm, n+1 + Tm, n-1 ? 4Tm,n =0 (where ?m? is the X?axis and ?n? is the Y-axis) Please see attachment for problem. Thanks.

Manufacturing Processes

1. Explain why studying the types of chips produced is important in understanding cutting operations. 2. Tool life can be almost infinite at low cutting speeds. Would you recommend that all machining be done at low speeds? Explain. 3. Explain the consequences of allowing temperatures to rise to high levels in cutting? 4. What

Stoichiometric Combustion and Typical Jet Turbine Combustion

Determine, using the chemical balance equations, the stoichiometric fuel:air ratio for the complete combustion of C12H26 in air of 21% Oxygen, 78% nitrogen. Using this value of AFR, determine the combustion temperature rise for a typical gas turbine (T2 = 250C). Note the two charts provide different ranges on the vertical and

Temperature

At what temperature is the Fahrenheit value equal to the temperature in Kelvins?

Tire pressure and temperature

The pressure of an automobile tire is measured to be 200 kPa (gage) before a trip and 220 kPa (gage) after the trip at a location where the atmospheric pressure is 90 kPa. If the temperature of air in the tire before the trip is 25 °C, the air temperature after the trip is?

Pressure

A 1.00-m^3 tank is filled with nitrogen gas to a gauge pressure of 20.0 atm. It is then connected through a valve to 9.00-m^3 evacuated chamber. The valve is opened just a little, and the gas slowly flows unitl it finally stops on its own. Given that the temperature was constant throughout the transfer, what is the pressure i

Radiation Specific Heating

Assuming that the specific heat of the body is 1 cal g^-1 degrees C^-1, a) Plot the approximate temperature rise as a function of whole body dose ranging from 100 mGy to 10 Gy b) What absorbed dose would correspond to a potentially lethal heat body burden, assuming that a body temperature rise of 5 degrees C (normal body

Temperatures for a Ring to Slip Over a Rod

At 20 degrees celsius, aluminum ring has an inner diameter of 5.00 cm and a brass rod has a diameter of 5.050 cm. If both are heated together, what temperature must both reach so that the ring just slips over the rod? Would this process work?

Heat and Temperature in Celsius

8.00 grams of aluminum at 200 degrees Celsius and 18.0 grams of copper are dropped into 55.0 cubic centimeters of ethyl alcohol at 15 degrees Celsius. The temperature quickly comes to 24.0 degrees Celsius. What was the initial temperature of the copper in degrees Celsius?

Water, Monatomic Gas Problem - Calculate Gas Pressure after Prolonged Contact

A beaker with a metal bottom is filled with 20 g of water at 20 degrees Celsius. It is brought into good thermal contact with a 4000 cm3 container holding 0.40 mol of a monatomic gas at 10 atm pressure. Both containers are well insulated from their surroundings. Question: What is the gas pressure after a long time has elapsed?

Compression of a Jaguar XK8 Cylinder

A Jaguar XK8 convertible has an eight-cyliner engine. At the beginning of its compression stroke, one of the cylinders contains 499 cm^3 of air at atmospheric pressure (1.01x10^5 Pa) and a temperature of 27.0 degrees Celsius. At the end of the stroke, the air has been compressed to a volume of 46.2 cm^3 and the gauge pressure ha

Pressure Cooker

(A) A pressure cooker is a pot whose lid can be tightly sealed to prevent gas from entering or escaping. If an otherwise empty pressure cooker is filled with air of room temperature and then placed on a hot stove, what would be the magnitude of the net force F_120 on the lid when the air inside the cooker had been heated to 120

What was the initial temperature of the copper?

8.00 g of aluminum at 200 degrees Celsius and 18.0 g of copper are dropped into 55.0 cm^3 of ethyl alcohol at 15 degrees Celsius. The temperature quickly comes to 24.0 degrees Celsius. What was the initial temperature of the copper?

Calculating moles using volume, density, molar mass, pressure and temperature

See attached file for clarity. Acid rain is a growing worldwide environmental problem. Naturally, rainwater should have a pH of not less than 5.5, but in the northeastern United States for example, the average pH of the rainwater is about 4.5. The increased acidity of the rain kills plants and animals in lakes and streams, ca

Dew point, Air temperature and Precipitation

In areas of precipitation, the dew point and air temperature are higher than in the surrounding areas not receiving rain. In areas of precipitation the dew point and air temperature are also the same or close to being the same. What can you say about the relationship between air temperature and the air's dew point for stations

Temperature Chage Observed When Burning a Sample in Calorimeter

High-purity benzoic acid (C6H5COOH; DHcomb = -3227 kJ/mol) is a combustion standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter (heat capacity = 1365 J/degC) that contains exactly 1.200 kg water. What temperature change is observed?

{11.12}Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture?The exhaust temperature of a Carnot heat engine is 350 degree C. What is the intake temperature if the efficiency is 25.0 percent?

Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture? ================================================= Answers: a) 20.4 degree C b) 40.4 degree C c) 80.8 degree C d) 90.1 degree C ###########################

Newton's Law of Cooling : Application to Falling Body Temperature

In a murder investigation, the crime scene investigators arrive 5am to examine the body. They found the body temperature to be 30 degrees celcius in a constant room temperature of 20 degrees celcius. (Normal body temperature is taken to be 37 degrees celcius). At 5.30 am the coroner arrived and measured the body temperature to

What kind of relationship exists between emitted light and time

Certain crystals fluoresce when exposed to a short burst of ultraviolet light. The amount of light emitted by the crystals is both time and temperature dependent. The emitted light is maximum at the time of excitation, the output then decaying with time. Such materials can be used to measure temperature. Given are some relative

Calculating Temperature Change in Water After a Reaction

10.1 g CaO is dropped into a styrofoam coffee cup containing 157 g H2O at 18.0 degrees C. If the following reaction occurs, then what temp will the water reach, assuming the cup is a perfect insulator and the cup absorbs only a negligible amount of heat? CaO(s) + H2O(l) yields Ca(OH)2(s) delta H rxn= -64.8 kJ/mol

Viscous fluid is moving through a flow pipe temperature increase

A viscous fluid is moving through a flow pipe. The flow is 2x10 to the -3 m3/s. Now, consider another tube with a fluid twice the viscosity which is moving in a pipe whose length is 3 times the original with a radius 1.5 times the original. The pressure difference across this new pipe is 1/3 that of the original. What is the f

Surface tension of water and mercury: Effect of temperature

At 20 degrees celsius the surface tensions for water and mercury are 73dyn/cm and 470dyn/cm respectively. Find these values in SI units. A small capillary tube of 1mm diameter is placed into a container of 20 degree celsius water. will the level of the water in the tube move above or below the level of water? by what distance in

Temperature of brick oven to expand 5mm without damage

A bottle containing 3kg of water at a temperature of 20 degrees Celsius is placed in a refrigerator where the temperature is kept at 3 degrees Celsius. How much heat is transferred from the water to cool it to 3 degrees Celsius?

brass rod pendulum loses time; find the error in one day.

See attached file. A clock driven by a brass rod pendulum loses time when the rod expands as the temperature rises. Find the error in one day. A pendulum clock is driven by a brass rod of length Lo= 1.6 meters, pivoted at one end. The pendulum beats perfect time when the temperature is to= 21 degrees Celsius. If the