Relate convection in fluids to density changes

Q: The average temperature of the atmosphere has increased by 0.4°C over the last thirty years.…

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Q: Oceans as deep as 0.520 km once may have existed on Mars. The acceleration due to gravity on Mars is…

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Q: State the term convection.

A: Convection is popular way of heat transfer in liquids and gases. In this process warmer air or…

Q: What is surface tension? What is its cause? Why is the surface tension also called surface energy?

A: Surface tension is the work, required to increase the surface area of a liquid due to inter…

Q: The light of distant stars is affected by: A) Interstellar Dust B) The Earth's Atmosphere C) Both A…

A: The light of distant stars is affected by Interstellar Dust and Earth's atmosphere.

Q: Describe an example of the combination of phase change and convection?

A: When the process of phase changes accomplishes convection, then some interesting phenomenon occurs.…

Q: What do you mean by mass flux of liquid or gas?

A: What do you mean by mass flux of liquid or gas?

Q: Do you know what is “Convection”?

A: Do you know what is " Convection "?

Q: Use the Clausius-Clapeyron equation to help calculate the relative humidity [in units of %], given a…

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Q: What is the universal gas constant?

A: Universal gas constant is the product of Boltzmann constant and Avogadro number. The value of…

Q: Which of the following is NOT an example of convection in action?

A: convection is a way of heat transfer other than conduction and radiation. It's the heat transfere…

Q: What is an item of the scientific name for the layer of gas that surrounds the earth

A: Layer of gases surrounding the earth is known as 'Atmosphere'. Atmosphere consists of ~78% nitrogen,…

Q: Define convection

A: There are three types of heat transfer mechanisms: conduction, convection and radiation. Convention…

Q: What is perpetual motion?

A: Perpetual motion:-  We know that perpetual motion is defined as a continuous motion of infinite…

Q: The colorful display of lights in the upper atmosphere seen in higher and lower latitudes are called…

A: Ques: The colorful display of lights in the upper atmosphere seen in higher and lower latitudes…

Q: If we heat a hole in matel, does it get bigger ?0r smaller

A: For a given metal with a hole in it of heated, we have to tell whether hole will get bigger or…

Q: Briefly describe molecular theory of surface tension?

A: The molecular theory of surface tension:The theory describes the attraction pattern in molecules of…

Q: Define about Small Nonzero Temperatures ?

A: To describe: Small Nonzero Temperatures Non zero temperatures are normally depicted as T = 0. Non…

Q: mic heat engine might operate between the 5600 K surface and the 2.7 K temperature ergalactic space.

A: Efficiency of heat engine = 1-(T2 /T1 )

Q: What happens to convection currents when the liquid or gas is no longer heated?

A: The currents are produced by applying heat,most often to the bottom.the warmed fluid is lighter than…

Q: The gravitational pull on particles in this cloud exceeded the tendency of a gas to disperse because…

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Q: What is meant by a system and surrounding?

A: System:- System is defined as definite quantity of matter or region in space containing a specific…

Q: CAICUIATE SurtAce grAuity (Fg) of the Sun.

A: To find : surface gravity of sun

Q: Which of the images below shows convection? Earth Sun A D

A: heat can be transfer from one point  to another point via following 3 process :- 1. conduction 2.…

Q: Based on your answer from Question #2, how would pressure at depth change from a lake to an ocean?

A: According to hydrostatic Law,pressure at any height is given by , P = (density)*(g)*(height) Since…

Q: Describe factors that affect peaking and hot channel factors

A: The hot channel factor is defined as the ratio of maximum linear power density to the average local…

Q: What is meant by the specific gravity?

A: Every substance has certain density, which is defined as the amount of mass present in an unit…

Q: Cold trap is used to get rid of heavy gases.

A: Yes, it's true.

Q: How pulse jet operate?

A: A pulse jet engine is a type of jet engine that uses pulsed combustion. A pulse jet engine is a…

Q: What is different between streamlined and turbulent motions?

A: When the velocity of a liquid is less than the critical velocity of the liquid, the motion is said…

Q: Because oxygen is limited, what is the time manned submersibles can stay down on the deep sea floor?…

A: Given : How long can a manned submersible stay in deep sea due to limited oxygen?

Q: Why does hydrogen escape from Earth's atmosphere more readily than oxygen?

A: The expression for the rms velocity,

Q: Evangelista Torricelli was the first person to realize that we live at the bottomof an ocean of air.…

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Q: What is absolute zero?

A: The lowest limit of the thermodynamic temperature scale is called absolute zero.

Q: What is a temperature inversion?

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Q: Which is greater the attraction of Earth for 1kg of lead or attraction of 1kg of lead for Earth?…

A: The gravitational force of attraction is proportional to the product of masses and inversely…

Q: What is the importance of having different temperature scales? Why?

A: Temperature is a measure of the average kinetic energy of the particles in matter. In everyday…

Q: What is the coriolis force? When does this force come into existence?

A: Coriolis force is a pseudo force as it comes due to the rotation of the Earth. Coriolis force is a…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.