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7101.

bye megha.....thanx for the help

Answer»
7102.

Define seconds pendulum

Answer» Wrong
A pendulum whose time period is 2sec. is second pendulum.
7103.

Name the force responsible for the stability of a necleus

Answer»
7104.

If force (F) and density (d) are related as:F=α/(β+√d) Find the dimension of (β).

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7105.

Derive an expression for the accelaration of a body rolling down an inclined plane

Answer»
7106.

what is Doppler effect

Answer» The variation in the amplitude of sound either due to moving a source or observer is called doppler effect
7107.

What is phase

Answer» Angle or argument is called phase
7108.

What is fluids

Answer» any thing which can flow is referred as fluid
Fluid is a substance that continually deforms under a n applied shear stress..
7109.

Why Cp>Cv ??

Answer» Cp refers to contt pressure and Cv refers to constt volume.When pressure is constt then the heat given to the system is used in two ways:i) in raising the temperature ii)in expansion or in raising the volume.While in constt volume the total heat given to the system is used only in rising the the temperature. Hence Cp>Cv.
7110.

The hot food smell comes to ours very fast compare the cold food why

Answer» Diffusion bro
7111.

What is Carnot Engine?

Answer» Sadi Carnot devised an ideal cycle of operation for heat engine, this cycle came to be known as Carnot cycle. The machine used for realising this ideal cycle of operations is called an ideal heat engine or Carnot Engine.
7112.

State principle of homogeneity.

Answer»
7113.

Explain me the main concept of gravitation in this chapter

Answer»
7114.

defination of simpel harmonic motion

Answer» To and fro motion motion of body under affect of restoring force which directed towardfixed position and whose mag. is.directly prop.to displace of body from fixed position
7115.

What is the Young\'s modulus of steel?

Answer»
7116.

What is the direction of flow of heat

Answer» From high temperature to low temperature
From hot body to Cold body
7117.

Stocks low

Answer»
7118.

2+2-2

Answer» 2
7119.

define heat engine and explain its working? calculate the net work and drive its efficiency

Answer»
7120.

What Is equation when energy losses from perfectly inelastic collision?

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7121.

Distance time of graph

Answer»
7122.

Pass ho jayega itne kam notes ko phad kar

Answer» Ha
7123.

What is the SI unit of Boltzmann constant?

Answer» As Boltzman\'s constant=Energy /Temperature So, its SI Unit is Joule/Kelvin or J/K.
7124.

What is the SI unit of root mean square velocity??

Answer»
7125.

Work energy theorem...

Answer» Kf-Ki=W [Kf=Final kinetic energy and Ki means initial kinetic energy,therefore,Kf-Ki=change in kinetic energy and it is equal to the work done;(W)].
Net work done on body = change in kinetic energy
According to the work-energy theorem, the net work on an object causes a change in the kinetic energy of the object. The formula for net work is net work = change in kinetic energy = final kinetic energy - initial kinetic energy.
7126.

Why rain drops are sperical in shape

Answer» Due to surface tension , liquid try to minimize its surface area so rain drops are spherical
Surface tension also plays important role in this phenomenon
It is due to the teason that when the rain drops fall on the earth\'s surface then due to the gravitational force of the earth the drop feels a force acting downwatds and changes its position and a pointed closening on the outer surface(????)
Raindrops start to form in a roughly spherical structure due to the surface tension of water. This surface tension is the "skin" of a body of water that makes the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules.
reason is surface tension not viscosity
Due to surface tension
Due to Viscosity
7127.

What is the unit of i j

Answer»
7128.

Carnot engine

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7129.

Write the factors on which surface tension depends??

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7130.

What is magnus effect

Answer»
7131.

What is climatic condition of astroid

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7132.

Who plays clash of clan share your tag with me

Answer» me
7133.

What is the relationship between impulse and momentum

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7134.

Why hot air goes up it dont stay down as it has wieght

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7135.

How to talk to a Nakhre wali girls

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7136.

Establish a relation between linear velocity and in a uniform circular motion

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7137.

What is amplitude of oscillation

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7138.

Degree of freedom mean

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7139.

What is overtones

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7140.

My question is what is sport\'s

Answer» The entertaining physically work out with game feeling
7141.

show that in an isolated system liniar momentum is conserved.

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7142.

What is meant by thermal equilibrium

Answer» Transfer of heat in equilibrium state
When heat transfer b/wtwo body in contact stops (till their temp. Become equal
7143.

Define degree of freedom

Answer» No. of ways
It is defined as the total no. of independent ways in which the particle of the system can absorb energy.
7144.

Gravitational force b/w 2 bodies is 1N.if the distance b/w them is made twice,what will be the force

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7145.

Sonometer

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7146.

Equation of continuity

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7147.

Describe the operation of carnot engine .Calculate the efficiency of carnot engine

Answer»
7148.

Why vehicles are provided with shockers

Answer» 4 our safety.... so that we cannot get shocks due 2 the holes present in the road.??
Safty
7149.

What do you mean by mechanics

Answer»
7150.

Theorem wok energy

Answer»