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1. You have a 16 oz cup of coffee at 180 degrees F. That is way too hot to drink. So you want to cool the coffee off and decide to add some cold water. You add 2 ounces of cold water at 40 degrees F. How much will the water you added heat up? How much will the coffee that you poured the water into cool down?
2. An air bubble at the bottom of a lake has a volume of 15 cm3. The lake is 40 m deep and has a temperature of 4 ºC at the bottom. The bubble then rises to the surface where the temperature is 23 ºC. What is the volume of the bubble just before it reaches the surface?
3. You are sitting behind a curtain watching meters that measure pressure, volume, and temperature of some kind of heat engine. Pressure, volume, and temperature have reached an equilibrium state. Then someone behind the curtain tells you that they are going to add energy to the system. The energy is added and the equilibrium changes. Can you tell whether they did work on the system, heated the system, or a combination of both? Explain your answer.
4. In a refrigerator, heat is transferred from a colder area (the inside of the refrigerator) to a warmer area (the air outside of the refrigerator). Given what you know about internal energy, explain how this is possible.
Explain the differences between chiral, zig-zag and armchair carbon nanotubes. How may these structures be described mathematically? What are the predicted electronic properties of (10, 0), (21, -3) and (8, 8) SWNTs?
Compliance is key when starting a business. When you're embroiled in the excitement of starting a new business, it's easy to ignore the need for licenses and permits. Sure, getting licenses and permits is about as fun as visiting the dentist. But ..
Show the present worth on incremental investment calculations and identify the best alternative. Show your work at the same level of detail as possible
Master level thesis in renewable energy Topic is Virtual Power Plant, within the 3 months having 15000 number of words.
A model rocket is launched from point A with an initial velocity v0 of 86 m/s. If the rocket's descent parachute does not deploy and the rocket lands 104 m from A, determine
The airstroke actuator at D is used to apply a force of F = 200 N on the member at B. Determine the horizontal and vertical components of reaction at the pin A and the force of the smooth shaft at C on the member.
Discuss the difference between the circuit construction of a monostable and astable multivibrator.
Calculate the molar composition of this gas on both a wet and a dry basis and the ratio (mol H2O/mol dry gas).
What was the historical scope of telecommunications?
The most common sampling method is the convenience sample, therefore, many of the studies that you find for evidence use this sampling method. What are the implications for using a convenience sample on the way you interpret and use the findings?
Explain how the microstructures above had formed. Assume that the eutectoid diagram has the At C = 0%, A3 = 900°C coordinates.
Consider an M/M/1 queueing system. If the arrival rate increases, then the expected waiting time in the queue increases. Yes or No? Explain.
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