Q: Which two factors affect the amount of thermal energy an object has?
A: Thermal energy is total energy caused by motion
Q: If a large pan of soup and a small bowl of soup have the same temperature, what do you know about…
A:
Q: The second law of thermodynamics state that any heat engine working between two different…
A: Second law of thermodynamics states that it is not possible to convert heat energy to mechanical…
Q: In which direction does internal energy flow between hot and cold objects?
A: Internal energy is describe as the energy associated with the random, disordered motion of…
Q: How does the law of the conservation of energy relate to the first law of thermodynamics?
A:
Q: What does that specific heat of a substance relate to its ability to change temperature?
A: As we know, the relationship between specific heat and temperature of a substance is given by the…
Q: How does the second law of thermodynamics relate to the direction of heat flow?
A: Let us understand this with an example. A hot cup of coffee is kept in open atmosphere.
Q: What is a heat pump?
A: Heat pump is a device that is used for transfer of heat in and out of the system. When it's cold…
Q: How different types of transportation make use of thermodynamics?
A: The movement of people, goods, and animals, etc. from one place to another place in the world is…
Q: What are the application of heat and work in thermodymics in daily life?
A: We have to mention the application of heat and work in thermodynamics in daily life.
Q: The amount of energy transferred between two objects is considered. O a. Joules O b. Thermal waste O…
A: Lets define few the terms first: Joule: is the unit of heat . So it can't be answer.
Q: The type of heat transfer that occurs in liquids and gases, such as warm air rising and cold air…
A: Convection: It is a mode of heat transfer which occurs by the motion of a fluid due to density…
Q: Which is largest unit of heat transfer- Calorie, calorie, joule?
A:
Q: What two energies are involved in the interaction of radiant energy?
A:
Q: What is meant by dynamical theory of heat?
A: According to dynamic theory of heat everybody is made of small particles called molecules.This…
Q: When I sit by a campfire, how does its hot air heat me?
A: When you sit by a campfire, most of the heat you are receiving from the fires does not come from hot…
Q: is the type of thermal energy transfer that causes a camp fire to warm us. O a. convection O b.…
A: Emission of energy in waves or rays refers as radiation.
Q: Name the method of heat transfer which doesnot depend on gravity.
A: In radiation, heat is transferred without any motion of the medium particles
Q: What is heat of compression?
A:
Q: fire in the fire place by the heat transfer through A.
A: Heat can travel from one place to another in three ways - conduction, convection and radiation. In…
Q: You are cold, so you cover yourself in a blanket. A half hour later, you feel much warmer. Explain…
A:
Q: Name three factors on which the heat energy absorbed by a body depends and state how does it depend…
A:
Q: Show that heat always flows from high temperature to low temperature.
A: Heat always flows from high temperature to low temperature because of Second law of thermodynamics
Q: Mechanical energy is converted into heat energy when
A: mechanical energy can be converted entirely into heat Complete conversion of mechanical energy into…
Q: What is meant by thermodynamics?
A:
Q: The heat never flows spontaneously from a colder object to a hotter object. why?
A: Heat flows
Q: In terms of heat flow, explain why silverware feels cold to touch?
A: Answer:- Metal(silverware) feels cold because it conducts heat extremely well. Since room…
Q: What is the difference of sensible heat to latent heat?
A: Sensible heat is associate with change in temperature of an object or substance without change in…
Q: Choose the BEST answer to the following: Heat is simply another word for (a) temperature. (b)…
A: Heat is the energy in transit that flows from a region of higher temperature to a region of lower…
Q: In what ways are Heat and Temperature different? How are they related?
A: Heat is a form of energy. Temperature is the physical quantity which gives the degree of hotness of…
Q: Why are heat and temperature not the same thing?
A: To explain : The difference between the heat and temperture
Q: The process of heat radiation is the ONLY method of heat transfer that can occur under water.…
A: The process of heat radiation is the ONLY method of heat transfer that can occur through space.
Q: Rank the magnitudes of these units of thermal energy from greatest to least: a. 1 calorie b. 1…
A: Calorie is the amount of heat required to raise temperature from 14.5 0 C to 15.50 C of 1 gram…
Q: Which law of thermodynamics tackles the role of insulators and conductors in heat flow: zeroth,…
A:
Q: How is energy transrred an instant cold pack is put on a muscle injury
A: Conduction is the process by which energy is transferred when there is a direct contact between the…
Q: How does heat differ from internal energy , or are they two terms of same thing?
A:
why heat is called energy in transit?
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- At a certain location, the solar power per unit area reaching Earth’s surface is 200 W/m2, averaged over a 24-hour day. If the average power requirement in your home is 3 kW and you can convert solar power to electric power with 10% efficiency, how large a collector area will you need to meet all your household energy requirements from solar energy? (Will a collector fit in your yard or on your roof?)The sun doesn’t shine as brightly in winter as it does in summer. This means that in winter you won’t generate enough to fulfil your energy needs whilst you have a surplus of energy in summer. It is therefore necessary to place a battery in your house to store the extra energy. If we assume that we generate 66% of our total energy in the months April to September and that we use equal amounts of energy throughout the year. How much electricity must we store over these 6 months to use in the other half of the year? Give your answer in 3 significant figures. Remember we use 2990kWh of electricity per year.When driving a car, the chemical energy in gasoline is converted to thermal energy in the engine. Most of this thermal energy is then converted to mechanical energy, which makes the car move. What happens to the rest of the thermal energy?
- Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations that take place.The sun doesn't shine as brightly in winter as it does in summer. This means that in winter you won't generate enough to fulfil your energy needs whilst you have a surplus of energy in summer. It is therefore necessary to place a battery in your house to store the extra energy. If we assume that we generate 66% of our total energy in the months April to September and that we use equal amounts of energy throughout the year. Question: How much electricity must we store over these 6 months to use in the other half of the year? Give your answer in 3 significant figures (link). Remember we use 2990 kWh of electricity per year. Write down your answer as you need it for the next question Solution: kWhHow much energy would you consume daily if you kept 3 lightbulbs of 25 watts on all day long?.
- Why is it easier to start a fire with kindling rather than with large sticks and logs of the same kind of wood?The Earth constantly receives radiant energy from the sun and gets warmed up. Why does the Earth not get as hot as the Sun is?A 55-kg woman cheats on her diet and eats a 540-Calorie (540 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm. (c) If the human body is only 25% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work offher breakfast?
- Suppose that the average U.S. household uses 10100 kWh10100 kWh (kilowatt‑hours) of energy in a year. If the average rate of energy consumed by the house was instead diverted to lift a 1.80×103 kg car 11.3 m into the air, how long would it take? 1. car: ______ seconds? Using the same rate of energy consumption, how long would it take to lift a loaded Boeing 747 airplane, with a mass of 4.10×105 kg, to a cruising altitude of 9.92 km? 2. airplane: ______ seconds?Does a car hoisted for lubrication in a service station have potential energy? Explain.In a decentralized energy generation system, analyze how solar thermal energy can contribute to environment and social sustainability? To add value to your answer, you may use any solar thermal energy application or any other practical use that you witnessed somewhere (even a case study).