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Colloidal sol. Are the sol. Which appears homogeneous but are heterogeneous having size 1 to 100 nanometer. Tyndall effect is the phenomenon in which a beam of light scatters into a colloidal sol. And suspension. I hope you got help.

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Sukhita Br 5 years, 1 month ago

Solution that exists inbetween true solution and suspension is called colloidal solution The phenomenon of scattering light is called Tyndall effect

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We have discussed in the above paragraph on number of activities which we normally only considered to be worked in day to day life for each of these activities as the following question and answer that what is the work being done on what is happening to the object hu what is doing the work

Posted by Lavi Singh 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 11 months ago

Work done on a body is equal to the increase in the energy of the body, for work transfers energy to the body. If, however, the applied force is opposite to the motion of the object, the work is considered to be negative, implying that energy is taken from the object.

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Why is cell called as building unit of life

Posted by Nandlal Kumrawat 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Chhattarpal Singh 5 years, 1 month ago

Because it is the smallest unit of life

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Nilay Singhvi 5 years, 1 month ago

Because 1000 of cell adds and made our solar system

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What is linetic energy

Posted by ⟦R⟧⟦I⟧⟦S⟧⟦H⟧⟦I⟧⟦Y⟧⟦T⟧ Rishipreeth 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Nikhil Kumar 5 years, 1 month ago

Kinetic energy:- The energy due to motion is known as kinetic energy. The formula for kinetic energy is ½m(v²-u²). When the initial velocity, u is 0. Then, the formula is ½mv².

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Lab manual work

Posted by Vansh Adhana 5 years, 1 month ago

CBSE > Class 09 > Science

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What is the formula of displacement

Posted by Vatrika Pandey 5 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Daksh Gulati 5 years, 1 month ago

Ok.....

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Kumud Chouhan 5 years, 1 month ago

Displacement =velocity ×Time

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Nikhil Kumar 5 years, 1 month ago

Here s means displacement v = s/t Then displacement,s=vt Means displacement is the product of velocity and time.

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Harsh Bharti 5 years, 1 month ago

The smallest path between inetial and final point. The formula for displacement is: Displacement of an object equals, velocity times time plus ½ times acceleration times time squared.

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Aayman Mansuri 5 years, 1 month ago

Displacement divided by time taken is the formulae for displacement.

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I want the question and answer of atom and molecules

Posted by Bhagwan Giri 5 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Prathmesh Galphade 5 years, 1 month ago

The smallest indivisible part of a substance is known as atom And group of atom combine to form molecules ?

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Rakshit Bhamu 5 years, 1 month ago

Two or more than two are combined together to from molecule

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Rakshit Bhamu 5 years, 1 month ago

Atoms is the smallest unit of any states of matter

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Biosphere occurs a. Place of interaction of lithosphere, hydrosphere and atmosphere b. In atmosphere and hydrosphere. c In lithosphere d. Place of interaction of lithosphere and hydrosphere

Posted by Priyam Kataria 5 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Harsh Singh Prajapti 5 years, 1 month ago

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Can you explain me formula of aceleration of gravity on earth

Posted by Sneha Joshi 5 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Swati Pawan 5 years, 1 month ago

9.807mper S square

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Anuraj Singh 5 years, 2 months ago

g equal to mass of earth into mass of object by distances between the centre of the earth and objects

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Krish Dubey 5 years, 2 months ago

Yes I can explain

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Ma ra paper ha chapter 1,2,10,13, 14, 15

Posted by Farhaz Khan 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Chhattarpal Singh 5 years, 1 month ago

I will help

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Farhaz Khan 5 years, 2 months ago

Kal hi ha

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what is speed ?

Posted by Karthik Gundreddy 5 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Jyothi Sajjala 5 years, 1 month ago

Distance travelled by a unit time is called Speed?

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Harsh Bharti 5 years, 1 month ago

The rate of change of distance is called speed.And formula to find Speed is= Speed = distance / time

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Denish Kotia 5 years, 2 months ago

Distance travelled by the object in unit time.

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Nitya Gupta 5 years, 2 months ago

Distance travelled by the object in unit time. The SI unit of speed is metre per second. This is represented by the symbol m s–1 or m/s. Speed is a scalar quantity; it only has direction.

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Imam Khan 5 years, 2 months ago

Speed is the rate of distance travelled in a given time.

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Write a note on infections Diseases and relate with the current siniro

Posted by Gulli Bhati 5 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Smriti Dubey 5 years, 2 months ago

That disease speed person to person is called infection disease

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What is an alloy

Posted by Chetan Kaushik 12A 5 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Nitya Gupta 5 years, 2 months ago

An alloy is a uniform mixture. It is made up of two or more chemical elements, of which at least one is a metal. An alloy has properties different from the metals it is made of. Most alloys are made by melting the metals, mixing them while they are liquid to form a solution, then leaving them to cool and turn solid again.

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Chetan Kaushik 12A 5 years, 2 months ago

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Why ethylene called ripening fruits as phytohormone?

Posted by ... ... 5 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Abhi Shah 5 years, 2 months ago

Because you are lawda and mango is lasand puti

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What is the distance between (a) two consecutive crests. (b) two consecutive troughs, (c) a consecutive crest and trough in terms of wavelength?

Posted by ..... .... 5 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Neha Kandpal 5 years, 1 month ago

This is omitted chapter Sound

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Writing 7. Write a paragraph (in about 100 words) on 'Safe Drive, Save Life' using the following points : 10 [Points : Reckless driving of cars and bikes — drivers not wearing seat belts, helmets - breaking of traffic rules - campaign for 'Safe Drive, Save Life' — administrative monitoring.] Ans.

Posted by Krishnakant Singh 5 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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A person has a hearing range from 20 Hz to 20 kHz. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as 344 m s-1.

Posted by Sayoj Tamang 5 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Is carbon a metal, metalloid, nonmetal??

Posted by Yashraj Mudgil 5 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Amrita Saini 5 years, 1 month ago

Carbon is non metal

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Chhattarpal Singh 5 years, 1 month ago

Non metal

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Prathmesh Galphade 5 years, 1 month ago

carbon is Non meta

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Pratik Kumar 5 years, 2 months ago

Non metal

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Mansi Shahi 5 years, 2 months ago

Non metal

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How we explain conservation of energy in pendulum bob?

Posted by Saif Ali 5 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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A body weight 25 kg on the surface of the earth if the mass of earth is 6×10²⁴ kg the radius of earth is 6.4 ×10⁶ m and the grav

Posted by Yash Gupta 5 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Nitya Gupta 5 years, 2 months ago

40.71 × 10-²⁴ m/s²

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What is zero work done

Posted by Prateek Tamrakar 5 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Sandeep Sandeep 5 years, 2 months ago

When force and displacement are perpendicular to each other then work done will be zero

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Shivam Kumar 5 years, 2 months ago

When theta 90degree

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Nitya Gupta 5 years, 2 months ago

When force and displacement are perpendicular to each other, or when force or displacement is zero

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Jagriti Budhiraja 5 years, 2 months ago

When the force is perpendicular to displacement.

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What will be acceleration of a body of 5kilogram of a force of 200Neton is applied to it

Posted by Rocky Rocks 5 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Gurleen Kaur 5 years, 2 months ago

40 metre per second square

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Sandeep Sandeep 5 years, 2 months ago

Acceleration = force / mass = 200N / 5 kg = 40kgms

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Nithya Sri 5 years, 2 months ago

A=f/m 200/5 = 40 Kg m/s

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Aditi Tiwari Aditi. 5 years, 2 months ago

40 kg

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Calculate the force required to impact to a car a velocity of 30meter/second in 10second the mass of the car 1500kilogram

Posted by Rocky Rocks 5 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Yagyesh Jaiswal 5 years, 2 months ago

4500N

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Sandeep Sandeep 5 years, 2 months ago

4500N will be the force required to impact to a car

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Nithya Sri 5 years, 2 months ago

Given: m=1500kg a=v-u/t U=0 m/s V=30 m/s t= 10s So , here S.I unit of force is same so no change in it . Formula of force =m* a 1500× (0-30/10) = 1500×3= 4500 So,therefore the force is 4500N S.I unit of force is Newton /kg m/s . Newton is represented as N

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