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Cleavage

Cleavage in the fertilizatio...

Cleavage is the process of division of zygote cell. It starts just 2-3 hours of fertilization. All divisions are mitotic and holoblastic as division furrows divides the eggs com...

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Periods

Menstrual cycle

Menstrual cycle is the series of cyclic changes that occur in the reproductive tract of human females with a periodicity of 28 days. It is characterized by loss of vaginal blood...

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Tn1

Qbasic Coding Challenge for ...

WAP that allows a user to create and modify an array of size 10. Below is the menu that should be displayed. Clear the arrayInsert element at locationDelete element at locationS...

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Ectoderm

Fate of Ectoderm

Ectoderm is one of the three germinal layers. The entire body of tadpole and frog is derived from this layer. The fate of ectoderm i.e. the tissue and organs derived from this l...

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T

Physics | Annual exam 2020 |...

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Factors

Factor affecting the Velocit...

Factors Affecting the Velocity of Sound in a Gas(a) Effect of temperature: For one mole of an ideal gas having pressure P and volume V, equation of state is,(b) Effect of pressu...

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Velocity of sound wave

Velocity of Sound Wave in a ...

Velocity of Sound Wave in a MediumSound waves are longitudinal waves. Sound waves travel in all media, namely solids, liquids, and gases. When a longitudinal wave passes through...

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Newton

Newtons Formula and Laplace ...

Velocity of Sound in Gas: Newton's FormulaNewton assumed that when sound waves propagate through gas, compression and rarefaction are produced in the medium. The changes of thes...

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Neural

Neurulation

Neurulation is the process of formation of nerve cord from the ectoderm of embryo. It takes place after gastrulation i.e. formation of three germinal layers (i.e. ectoderm, meso...

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Acoustics

Reverberation and Acoustics

ReverberationIt is the persistence or prolongation of sound in an enclosure (room or hall) as a result of multiple reflections from the walls, ceiling, and other materials even ...

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Notochord

Notochord Formation:

Notogenesis is the process of formation of notochord. Notochord is a flexible rod made of a material similar to cartilage. It is formed by following ways:1) Notochord is develop...

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Received 516193812629702

pH of water at 24°c is 7. What effect does increase in temperature results in pH of water?

1)pH will be more than 7

2) pH will be less than 7

3) pH will be equal to 7

4) can't be determined

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Answered

Option 2 is correct ans .

Dissociation of water is an endothermic  reversible reaction.

When temperature is increased , for an endothermic reaction in equilibrium , it shifts the equilibrium to forward direction i.e. more product is formed which in this case means : more water is dissociated ( more H+  concentration ) is obtained . Ph= negative logarithm of H+ concentration so, more H+ concentration means, lesser Ph. so , whole ph range gets changed when temperature is increased i.e at that time, our neutral point is lesser than 7 but, still water is neutral !

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Img 20191026 064533

Why is sky red/yellow in the evening and blue in the day?

300e3c45d50814172e2daa3684d351db
Answered

At dawn and dusk, large amount of blue and violet light(shorter wavelength) has been scattered so, the light that is recieved by an observer is mostly of a longer wavelength and therefore appears to be red.

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Received 516193812629702

The electric potential of earth is same every where why?

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Missing

How to make a dynamic website ? What language should I learn?

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Answered

First learn basic HTML, then CSS and responsive CSS for Static websites and thereafter JavaScript and PHP for dynamic pages. If you also want to learn jQuery for more better works learn it at the same time with JavaScript

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Bdprofile

What is the minimum distance between a source of the sound and a reflector to hear an echo?

Khadka
Answered

Let S be the distance between the source of sound and reflector.
V be the velocity of sound in air.
t be the total time taken by the sound to travel from source to reflector 
and back to the source.

        2S = Vt
or,    S   = (Vt)/2

We can hear distinct sounds if they reach our ear after an interval of 0.1s or more
That is, t = 0.1s and V = 340 ms-1

Therefore, S = (340 x 0.1)/2 = 17 m.
This is required minimum distance to hear an echo.

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Img 20201202 201121 937

What is the IUPAC name of this compound.?

Img 20201202 201121 937
Answered

@sandesh_Ghimire where is iodo group? You have not mentioned. 

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Img 20201202 201121 937

Is there any effect of gravity on fire??

Missing
Answered

There is, for sure, effect of gravity on fire. We know for a fact that fires on Earth are "pointy" while those in zero-gravity are "round". This is because fire is simply glowing gas. Gas is matter and matter has weight. For a body to have weight, gravity must influence it in some way. 

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