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A: OPTION C is the correct answer
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Q: Differentiate between the "soft constraints" and “hard constraints"
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A: Force, F=10 NDisplacement, s=2 m
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A: Yes , it is true.
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- A 30.14 g stainless steel ball bearing at 117.82°C is placed in a constant-pressure calorimeter containing 120 mL of water at 18.44°C. If the specific heat of the ball bearing is 0.474 J/g-°C, calculate the final temperature of the water. Assume the calorimeter to have negligible heat capacity. Specific heat of water is 4.184 J/g-°C .The mass of water in a single popcorn kernel was found to be 0.905 grams after it popped at a temperature of 175 °C. Using the information given in the Introduction, calculate the amount of heat in kilojoules required to pop this single kernel if the room temperature was recorded to be 21.0 °C.PROBLEM: 1VB-29 FROM THE BOOK: ENGINEERING THERMOFLUIDS, M. MASSOUD.
- 1. 4000L/hr of distillates are cooled from 21 to 12 degrees Celsius, and wax is separated 12% by weight at 15 degrees Celsius. Oil has a specific heat of 2kJ/kg C and a specific gravity of 0.87. The latent heat of fusion is 290kJ/kg, and the specific heat of wax is 2.5. Allow 10% for losses and calculate the refrigerating machine's capacity in TOR.Thermal conductivity for pure aluminum: kal = 238 W/m⋅K ; Thermal conductivity for glass: kgl = 1.4 W/m⋅K.A copper rod and a steel rod are different in length by 5.00 cm at 0°C. The rods are warmed and cooled together. (a) Is it possible that the length difference remains constant at all temperatures? Explain. (b) If so, describe the lengths at 0°C as precisely as you can. Can you tell which rod is longer? Can you tell the lengths of the rods?
- As shown in the figure, when the temperature was 20 ° C, a 0.5 mm gap was left. Just determine the approximate value (° C) of the temperature required to close the gap.How do you derive this equation with the Maxwell Viscoelastic ModelA concrete block which has dimensions 186x72x250 mm is heated in a furnace at constant 397°C. The density of concrete block is 1600 kg m-3, specific heat capacity is 840 J kg-1 K-1, and thermal conductivity is 0.79 W m-1 K-1. The block is being kept in the furnace for long enough to reach equilibrium. When the equilibrium is reached the block is removed from the furnace and is left to cool in a room with ambient air temperature of 20°C. Assuming that convective heat transfer coefficient is 4.4 W m-2 K-1 calculate Biot number (Bi) to three significant figures.
- A steel pipe of outside diameter of 0.051 m is insulated with a 0.0064-m thickness of asbestos followed by a 0.0254-m layer of fiber glass. If the pipe wall is 315.6o C and outside insulation is 37.8o C, what is the temperature between the asbestos and fiber glass? kasbestos = 0.166 W/mo C and kfiber glass = 0.0485 W/mo C.Q4. Two long rods of the same diameter, one of brass(k= 85 W/mK) and the other of copper (k=375 W/mK) have one of their ends inserted in a furnace and the other ends exposed to the same atmosphere. At a distance of 105mm away from the furnace, the temperature of the brass rod is 120' C. Find the distance from the furnace in which the copper rod have the same temperature.Which spring, the truncated cone spring or the helical spring, would have a larger spring constant? Explain.