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Trainin travels first 15 km at a uniform speed of 30 km per hour the next 75 km at a uniform speed of 50 km per hour and at last 10 km at uniform speed of 20 km per hour calculate the average speed for the entire train journey

Posted by Shreya Jatwani 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Anand Kumar Shah 2 months, 2 weeks ago

Answer: a) In the first part, the speed of the train is 30 km/h for a distance of 15 km. b) In the second part, the speed of the train is 50 km/h for a distance of 75 km. c) In the third part, the speed of the train is 20 km/h for a distance of 10 km.

ANSWER

Dairey Entry Indian one Summers day are really unbeam the maxinium timp out ames up to I 47° C It was the most. his crable day of the year y y Record the Experiences in your dairy wente a daily enters &

Posted by Jasminder Singh 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

Type of mixture defferent between homogeneous and heterogeneous mixture (5 point)

Posted by Sameer Khan 2 months, 2 weeks ago

CBSE > Class 09 > Science

5 answers

Sameer Khan 1 month, 1 week ago

Suger

Jeenat Rani 2 months, 2 weeks ago

Example of heterogeneous is like sand and salt sugar and salt water in oil etc...

Jeenat Rani 2 months, 2 weeks ago

Example of homogeneus is sugar in water salt in water sulphur in carbon disulphide water in alcohol etc...

Jeenat Rani 2 months, 2 weeks ago

Heterogeneous has non uniform composition where as homogeneous has uniform composition.

Sulabh Singh 2 months, 2 weeks ago

Pta nii

ANSWER

What happen when an inflated air baloon is prinked with a pin name property of the gaseous state exhibited by this observation

Posted by Ambelal Rajbhar 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

A ball is thrown up with a speed of 15 m/s . How high will it go before it begins to ball. (g=9.8m/s²)

Posted by Ankit Kumar Nayak 2 months, 2 weeks ago

CBSE > Class 09 > Science

3 answers

Khanak Prakash 2 months, 1 week ago

u=15m/s V=0 H=? a/g= -9.8m/s² By third eq. Of motion 2gh=v²-u² 2×9.8×h=0²-15² 19.6h=225 h=11.48

Sumit Kumar Dey 2 months, 2 weeks ago

147

Vatsal Acharya 2 months, 2 weeks ago

Hiiii

ANSWER

What us the role of epidermis in plants

Posted by Mayank Paliwal 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Abhinav Vaishya 2 months, 2 weeks ago

How to use epidemic

ANSWER

An airplane window has an area of 825 cm². Cabin pressure is 1atm, and the outside pressure is 0.3 atm. Find the force produced by air pressure on the window.

Posted by Muskan Choudhary 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is the meang of pregnant

Posted by Bitu Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

3 answers

Kanishka Dahiya 2 months ago

Having a baby developing in her body.

Prabhsimran Jammu 2 months, 2 weeks ago

Please tell

Ujjwal Kumar 2 months, 2 weeks ago

Kiya question hai ye

ANSWER

What is the meaning of prokaryotic cell

Posted by Bitu Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

3 answers

Vaibhavi Tayal 2 months, 2 weeks ago

Pro means primitive and karyot means nucleus

Bitu Kumar 2 months, 2 weeks ago

Inertia is the property ot the material which oppose any change on its state. It is the property of an object which mentain its state. Inertia is directly proportional to the mass. First law of motion is also known as law of inertia.

Farhab Ansari 2 months, 2 weeks ago

what is inertia

ANSWER

What is base.

Posted by Anantha Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Farhab Ansari 2 months, 2 weeks ago

what is inertia

ANSWER

Give notes for acid base lesson for 9th

Posted by Anantha Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

how many grams of solute is required to prepare 15%concentrated solution . with the volume of 200ml ?

Posted by Sukhmanpreet Kaur 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

Sir plzz give me important notes plzz help me my exam is close sir 6 and 8 chapter give me notes plzz sir

Posted by Himanshu Gaming Gaming 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Maheboob Patel Maheboob Patel 2 months, 2 weeks ago

Yes sir

ANSWER

Hlo sir

Posted by Himanshu Gaming Gaming 2 months, 2 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is sexual reproduction & What is asexual reproduction?

Posted by Lucky Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

2 answers

Bitu Kumar 2 months, 2 weeks ago

When a new baby is born with the help of single parent is called asexual reproduction

Aanchal Singh 2 months, 2 weeks ago

when one female gamete and one male gamete fuse together is called sexual reproduction

ANSWER

Cells of cork contain a chemical called

Posted by Ashish Rajput 2 months, 2 weeks ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 2 months, 2 weeks ago

Suberin

Bharti Malik 2 months, 2 weeks ago

Suberin

Lakshay Meena 2 months, 2 weeks ago

suberin

Lakshay Meena 2 months, 2 weeks ago

Cells of cork contain a chemical called suberin

Rozyta Tensubam 2 months, 2 weeks ago

Suberin

ANSWER

What is lysosomes??

Posted by Nirmal Kumar 2 months, 2 weeks ago

CBSE > Class 09 > Science

3 answers

Bitu Kumar 2 months, 2 weeks ago

1. Lysosome are the membrane bounded structure which contain powerful digestive enzymes that are made by RER. 2. Lysosome are the waste disposal system of the cell. 3. The function of lysosome is to clean the cell by digesting foreign material, worn-out cell organelles etc. When the cell gets damaged lysosome burst itself and digest its own cell. So, the lysosome are known suicide bag of the cell.

Rohit Kumar 2 months, 2 weeks ago

an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.

Rozyta Tensubam 2 months, 2 weeks ago

Lysosomes are membrane-bound sacs filled with digestive enzymes which are made by RER. They are absent in RBC and have a kind of waste disposal system. When the cell gets damaged, lysosomes burst and the enzymes digest their own cell. Since lysosomes can digest their own cell, they are known as the suicidal bags in a cell.

ANSWER

Solution contains 30g of glucose and 20g of salt in 500ml of water

Posted by Yokesh Waran 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Abhishek Kumar 2 months, 2 weeks ago

550ml

ANSWER

A car starting from rest moves uniform acceleration of 0.2ms-2 for 4minutes. Find the speed and distance travelled .

Posted by Ganesh Bhai 2 months, 2 weeks ago

CBSE > Class 09 > Science

1 answers

Rozyta Tensubam 2 months, 2 weeks ago

Given : u = 0 ; a = 0.2 ms-² ; t = 4 mins = 4×60 = 240 secs Then ; v = u + at => v = 0 + (0.2×240) => v = 0 + 48 => v = 48 ms-¹ Again ; S = ut + ½ a t² => S = (0×240) (½×0.2×240×240) => S = 0 + 5760 => S = 5760 m

ANSWER

Which of the following are not matter and why? Air, thought, light ,chair

Posted by Namrata Babani 2 months, 2 weeks ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 2 months, 2 weeks ago

Thought because it has not mass and occupy space

Manas Malhotra 2 months, 2 weeks ago

Thought

Kanishka Chauhan 07 2 months, 2 weeks ago

Thought

Kabeer Gurung 2 months, 2 weeks ago

Yes thought and light are not a matter.

Sarthak Singh 2 months, 2 weeks ago

Thought and light is not an matter because it does not occupy space and have volume.

ANSWER

What is H2s

Posted by Nayandeep Chakraborty 🧑 2 months, 2 weeks ago

CBSE > Class 09 > Science

3 answers

Vineet Yadav 1 month, 3 weeks ago

Hydrogen sulfhide

Rozyta Tensubam 2 months, 2 weeks ago

Hydrogen Sulphide

Lucky Sharma 2 months, 2 weeks ago

Jo tum piche se chorta hai

ANSWER

What is the major source of fresh water in city/ town/ village where you live ?

Posted by Jonali Barman 2 months, 2 weeks ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 months, 2 weeks ago

Underground water

Sarthak Singh 2 months, 2 weeks ago

River .

ANSWER

A bus decreases its speed from 80 km h -1 to 60 km h -1 in 5 s . Find the acceleration

Posted by Nupur Dasgupta 2 months, 3 weeks ago

CBSE > Class 09 > Science

5 answers

Rozyta Tensubam 2 months, 2 weeks ago

Given : u = 80 kmh-¹ ; v = 60 kmh-¹ ; t = 5 s Then ; a = v-u / t => a = 60 - 80 / 5 => a = -20 / 5 => a = -4 ms-²

Sarthak Singh 2 months, 2 weeks ago

80km=200/9m 60km=50/3m a=50/3-200/3/5=-1.1ms

Sarthak Singh 2 months, 2 weeks ago

a=v-u/t a=80-60/5=4m/s

Lakshya Garg 2 months, 3 weeks ago

A = v-u / t = 80-60 / 5 = 20/5 =4m/s²

Satyansh Rajbhar 2 months, 3 weeks ago

Acceleration = 4.4 m/s²

ANSWER

Explain free fall

Posted by Sarika Kumari 2 months, 3 weeks ago

CBSE > Class 09 > Science

1 answers

Manas Malhotra 2 months, 2 weeks ago

When a body move exclusively under the influence of earth gravity it is said to be in free fall

ANSWER

Silver nitrate solution is used to study

Posted by Priyanshu Singh 2 months, 3 weeks ago

CBSE > Class 09 > Science

4 answers

Khanak Prakash 2 months, 1 week ago

Golgi body

Rozyta Tensubam 2 months, 2 weeks ago

Golgi Apparatus

Yash Phougat Yash Phougat 2 months, 3 weeks ago

What is force

Priyanshu Singh 2 months, 3 weeks ago

Golgi apparatus

ANSWER

CO 2 is a gas . Write two gaseous property to justify it.

Posted by Ananya Ghawri 2 months, 3 weeks ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 months, 2 weeks ago

1. The particles are widely packed/arranged. 2. The particles have high fluidity.

Srishti Gupta 2 months, 3 weeks ago

1 It doesn't have fixed shape and volume . 2 It can be compressed

ANSWER

Calculate the average density of the earth in terms of 'g' , 'G' and 'R'

Posted by Sneha Sr 2 months, 3 weeks ago

CBSE > Class 09 > Science

1 answers

Prince Kohar 2 months, 3 weeks ago

The same thing you are not in my phone utha ke kithna chapter ke liye bhi na hai to do the me to H to the me to be in yuthe me of

ANSWER

State the function of meristematic tissue

Posted by Sarika Rawal 2 months, 3 weeks ago

CBSE > Class 09 > Science

4 answers

Shreya Pandey 2 months, 2 weeks ago

Meristematic tissue have ability to divide their cells. These are 3 types of cells.. apical, lateral and intercalary meristem

Rozyta Tensubam 2 months, 2 weeks ago

Matter can be defined as anything that has mass, volume, can occupy space and can be felt with our senses.

Suganya R 2 months, 3 weeks ago

Helps in growth of the plant 3 Types of meristematic tissues are Apical tissues - tip of stem and root helps in growth Intercalary tissues - present in node of branches helps in growth of branches and leaves Lateral tissues - helps in increasing the grith of the plant

Bindu Devi 2 months, 3 weeks ago

What is a matter

ANSWER

During a experiment the student were asked to prepare a10%(mass/mass) solution of sugar in water ramesh dissolved 10g of sugar in 100 g of water while sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution (A) are the two solution of the same concentration (B) compare the mass% of two solution

Posted by Gayatri Verma 2 months, 3 weeks ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 months, 2 weeks ago

(A) No, the two solutions are not of same concentration. (B) The mass percentage of the solution prepared by Ramesh is 10/100×100 = 10%.

Srishti Gupta 2 months, 3 weeks ago

100

ANSWER

Imagine if mitochondria does not have there own DNA. What process could not or could be taken place?

Posted by Sanvi Shetty 2 months, 3 weeks ago

CBSE > Class 09 > Science

0 answers

ANSWER

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