How is conduction caused?

Q: Why is Evaporation a Surface Phenomenon?

A: Evaporation is a surface phenomenon because, during evaporation, the molecules with higher kinetic…

Q: How do airplanes stay in the air?

A: When air flows over any flat plate at an angle, like when you hold your hand out of a car window on…

Q: How does surface tension change with temperature?

A: Surface tension is the property of the surface which is due to intermolecular attraction between the…

Q: Would regelation occur if ice crystals did not have an open structure? Explain.

A: The structure of ice is similar to that of water molecules. There exist hydrogen bonds in ice…

Q: Distinguish between elasticity and plasticity.

A: Elasticity: Elasticity is defined as a property of material which enables a material to regain it’s…

Q: What is effect of temperature on elasticity?

A: The modulus of elasticity is a characteristic property of a given material and it is a measure of…

Q: In a mechanical pump, a one- way valve is used to connect the pump and the vessel. *

A: Yes, it's true.

Q: Is the net flux always greater from regions of higher concentration to regions of lower…

A: We consider here the electric flux through a closed region. Gauss's law of electric flux is given by…

Q: gas is flowing with a velocity of 0.4 m/s in a pipe of with an area of 0.2 m2 and then flows in a…

A:

Q: Why do boats need anchors if ocean waves do not carry matter forward?

A:

Q: What is affect of changing the volume on (PV)?

A: According to Boyle's law, for an ideal gas PV = constant where, P is pressure and V is the volume of…

Q: What is the Effect Of Temperature On Surface Tension And Viscosity?

A: Viscosity and surface tension are the physical properties of the liquid. Viscosity is defined as the…

Q: Relate how surface tension is manifested in water showing water strider walking in the  surface of a…

A: The surface tension in water is due to the Newton's Third Law. Every action have equal and opposite…

Q: Why do substances expand when temperature is increased?

A:

Q: Why do we feel hot after a long period of running or doing exercise?

A: When we do running or any exercise, it will lead to increase in the muscular activity.

Q: Name different types of rectifier.

A: Rectifiers are electrical devices which contain one or more diodes to allow the flow of current only…

Q: Why does water “seek its own level”?

A: The water exerts a pressure on the surface which is equal at any part of the water. Also, it…

Q: Ex -rys d aanelength to Pm are scaltered hrom a tanget seatered chrongh L15.6) hnd he, makimam…

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Q: What is the reason for ice being less dense than water?

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Q: Why "Movement Enhan cement imp ortant?

A: Given: Why Movement enhancement is important?

Q: What property of water makes it an effective coolant?

A: To be an effective coolant, a substance has to have a high specific heat capacity, so that it can…

Q: Who has more need for drink in a dry desert climate, a child or an adult?

A: The rate at which dissipates heat from an object is directly proportional to the surface area.…

Q: The two requirements for conduction to occur are difference and physical

A: Im conduction there is a heat ene6 transfer by the molecules of the medium it self.

Q: Distinguish between the different types of solids and explain their physical properties.

A: Introduction- The state of matter in which there are closely packed particles with a definite shape,…

Q: How does perspiration give the body a means of cooling itself?

A: To determine: How the perspiration give the body a means of cooling itslef

Q: Show that 1 cal/g · ºC =1 kcal/kg · ºC.

A: The calorie is defined as the unit of energy , which is the heat energy absorbed by water of weight…

Q: What accounts for the bulged ends of a can of soda that has been frozen?

A: Water is less dense in solid form than in liquid form. Thus water expands on freezing.

Q: How does slipping occur?

A: Describing The reason of slipping

Q: How did cavemen keep warm?

A: Archaic humans had much of body hair (fur) to keep them warm from cold, and protect from sun.…

Q: Why are bottoms so that utensils for cooking food blackened?

A: Why are the bottoms of cooking utensils are blackened?Black color absorbs maximum amount of heat…

Q: Why do bubbles form inside the bottle of carbonated soda (ex. Sprite) when adequately submerged in a…

A: Why do bubbles form inside the bottle of carbonated soda (ex. Sprite) when adequately submerged in a…

Q: Does water boil at higher temperatures at higher pressures? Explain.

A: Water boil at higher temperatures at higher pressures

Q: Calculate the force required to punch a hole 2cm2 in a steel sheet 2mm thick whose shearing strength…

A: Consider the following relation.

Q: Birds swell their feather in winter, Why?

A: Birds often swell their feathers in the winter in order to keep themselves warm.

Q: Why is water wet?

A: Water can be said to be in the sense that water is a liquid.

Q: Discuss the mechanics of ocean energy.

A: The ocean covers more than 70% of the earth's surface. Oceans have the ability to produce two types…

Q: m /s 9.81 Calculate the rate of sedimentation (settling speed) of red blood cells.

A: Given that,  Diameter of sphere, DP = 5 μm Red blood cell density, ρP = 1.125 = 1125 Kg/m3  Liquid…

Q: What happens when the stretching force on an elastic material is released?

A: An elastic material can return to it's original shape after being stretched or compressed. This…

Q: What is Conduction in physics ?

A: Conduction is the transfer of thermal energy or electric charge through a material through direct…

Q: 23 - Which of the following occurs as a result of the perspiration in the cement not meeting the…

A: Plastic shrinkage occurs as a result of the perspiration in the cement not meeting the evaporation.

Q: What happens when equilibrium is out of balance?

A: Equilibrium means when net external force on the system is zero. Hence, it means that acceleration…

Q: 6-73. Determine the reactions at the supports at A, E, and B of the compound beam. 900 N/m 900 N/m B…

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Q: will be compressed.

A:

Q: Describe the Fick’s Law? Give an example?

A: Fick's law explains the movement of the molecules from the region of higher concentration to lower…

Q: Differentiate between Stretching and Compressing of materials?

A: Stretching : Stretching means pulling of an object. In physics, stretching refers to pulling of an…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!