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    • Posted by Gayatri Anne 4 years ago

    CBSE > Class 09 > Science
    • 0 answers
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    • Posted by Tanu Shree 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 4 years ago

    Squamous epithelium is made up of large flat cells whose edges are fit together like tiles in a floor. Due to their tile like appearance, they are also known as pavement epithelium.

    1Thank You

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    • Posted by Dikshant Bansal 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 4 years ago

    Yes, we can find differences in cells from various parts of the plant body. There are different types of cells in a plant body. They have different structures and perform different functions. So, root cells would differ from the types of cells present in leaves or stem.  For example: Leaf contains a number of different cells like mesophyll cells, bundle-sheath cells, guard cells which are not present in other parts of plant body.

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    • Posted by Anushka Rawat 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Sainty Prajapati Prajapati 4 years ago

    Matter is Made up of Small partical

    1Thank You

    Jyoti Kjha 4 years ago

    Derive the second equation of motion s = ut + (1/2)at2 using the velocity-time graph. Consider the linear motion of a body with an initial velocity u. Let the body accelerate uniformly and acquire a final velocity v after time t.

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    • Posted by Utkarsh Singh Parihar 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Yamini Kandpal 4 years ago

    Parenchyma - they help to provide photosynthesis and chlorophyll to the plants. Collenchyma - they help to provide flexibility to the plant. Sclerenchyma - they help to make the plant rigid and hard.

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    Yogita Ingle 4 years ago

    imple tissues are of three types namely parenchyma, collenchyma and sclerenchyma.

    • Parenchyma – They are living cells and walled, soft in nature due to the presence of thin-walled cells
    • Collenchyma – These are characterized by uneven thick-walled living cells.
    • Sclerenchyma – They have cells with thickened lignified walls, providing them strength and making them waterproof.

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    • Posted by Divya Upadhyay 4 years ago

    CBSE > Class 09 > Science
    • 3 answers

    Gayatri Anne 4 years ago

    function it performs

    0Thank You

    Abhishek Kumar 4 years ago

    Function

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    Gaurav Seth 4 years ago

    The shape and size of cell depends on the function it performs. For example, RBCs are designed in such a way that they have to carry oxygen in the bound form with haemoglobin. Nucleus occupies adequate space in the cell. So, RBCs do not have nucleus in order to accommodate more haemoglobin to carry oxygen. 

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    • Posted by Prachi Sethi 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Ashirwad Chauhan 4 years ago

    It's not a platform for promoting your channel.......this app is for studies so please stop promoting your YouTube channel.

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    • Posted by Devesh More 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Gaurav Seth 4 years ago

    Full form of amu is the atomic mass unit.

    Mass of 1 atom = 12amu

    1amu = (Mass of 1 126C atom)/12

    1amu = (1.994 x 10-23)/12

    1amu = 1.662 x 10-24g.

    1Thank You

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA Plz like share and subscribe my YouTube channel

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    • Posted by Lovepreet Singh 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA Plz like share and subscribe

    0Thank You

    Dev Rajput 4 years ago

    1.How are sol,solution and suspension are different from each other

    1Thank You

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    • Posted by Ashiq Shah 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Abhishek Kumar 4 years ago

    Addiction means getting attracted towards something

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    Ananya K 4 years ago

    Addiction is a complex condition, a brain disease that is manifested by compulsive substance use despite harmful consequence. People with addiction (severe substance use disorder) have an intense focus on using a certain substance(s), such as alcohol or drugs, to the point that it takes over their life.

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    • Posted by Manikarnika Mishra 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Gayatri Anne 4 years ago

    ELEMENT IS PURE SUBSTANCE AND IS MADE UP OF ONLY ONE TYPE OF ATOM. COMPOUND IS ALSO A PURE SUBSTANCE AND IS MADE UP OF MIXTURE OF ELEMENTS

    1Thank You

    Bishal Paul 4 years ago

    The my policy this is a study on that I am a hopper you can explain the messages and I will do the 4

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    • Posted by Ritik Bisht 4 years ago

    CBSE > Class 09 > Science
    • 4 answers

    Bhumi Hingole 4 years ago

    Power house of cell

    0Thank You

    Abhishek Kumar 4 years ago

    Mitochondria are the scavengers of cell

    0Thank You

    Niyati Tyagi 4 years ago

    It's a power of the cell. It provides enedgy to the cell . It's a round tube like structure

    1Thank You

    Yogita Ingle 4 years ago

    Mitochondria

    • Mitochondria are round "tube-like" organelles that provide energy to a cell in the form of ATP (Adenosine Triphosphate) for performing different chemical activities for the sustainance of life.
    • The mitochondria is also called powerhouse of the cell.
    • It is surrounded by two membranes.
    • The outer membrane is porous wherea the inner membrane has deep folds that provides a large surface to perform the chemical reactions required for the generation of ATP.
    • The inner membrane is compartmentalized into various cristae.
    • The ground substance or space enclosed by inner membrane is called matrix.
    • Mitochondria have their own DNA and ribosomes and are hence capable to produce some of their required proteins all by themselves.

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    • Posted by Palak Pandey 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 4 years ago

    The muscular system is an organ system, involved majorly in the movement of the body. There are nearly 700 muscles that are connected to the bones of the skeletal system, which roughly half make up the human’s body weight. Every muscle is a different organ made of blood vessels, skeletal muscle tissue, nerves, and tendons. Muscle tissues are found in the heart, blood vessels, and digestive system.

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    • Posted by Palak Pandey 4 years ago

    CBSE > Class 09 > Science
    • 4 answers

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA

    1Thank You

    Ananya K 4 years ago

    The femur bone is the longest and strongest bone in the body.

    0Thank You

    Niyati Tyagi 4 years ago

    Femur

    0Thank You

    Yogita Ingle 4 years ago

    The femur is the bone in the human body which is strongest among all. It stretches the hip to the knee. It can withstand a force of as much as 1,800 to 2,500 pounds.

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA

    2Thank You

    Gaurav Seth 4 years ago

    The maximum displacement is the diagonal of the square field.

    side of square = 100m
    diagonal = √100² + 100² = √20000 = 100√2 m = 141.42m

    So maximum displacement is 141.42m.

    3Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Beyon P Binoy 4 years ago

    Distance covered by the car= 100+25 = 125m Displacement= 100-25 =75m

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 3 answers

    Ananya K 4 years ago

    The motion of the head of the girl while touching her toe is an example of accelerated motion because (i) The direction of her head is a circular path. So, The direction of velocity is always changing and so the velocity always changing.

    1Thank You

    Akash And Prisha Yadav 4 years ago

    The motion of the head of the girl while touching her toe is an example of accelereted motion because (i) The direction of her head is a circular path. So, The direction of velocity is always changing and so the velocity always changing. (i.e - The velocity can never be constant). Since, the velocity is changing.

    1Thank You

    Yogita Ingle 4 years ago

    The motion of the head of the girl while touching her toe is an example of accelereted motion because (i) The direction of her head is a circular path. So, The direction of velocity is always changing and so the velocity always changing. (i.e - The velocity can never be constant). Since, the velocity is changing.

    1Thank You

    ANSWER

    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 3 answers

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA

    0Thank You

    Ananya K 4 years ago

    distance = rate x time. To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time.

    1Thank You

    Udita Singh 4 years ago

    By its slope

    1Thank You

    ANSWER

    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Ananya K 4 years ago

    The speed of an object is calculated from a distance - time graph as the slope. The slope of a line represents how steep it is. In distance - time graphs, slope, which is the average speed is calculated by dividing a change in y value by the corresponding change in x-value.

    0Thank You

    Yogita Ingle 4 years ago

    "Speed of an object can be determined from its distance-time graph using the following steps:

    1.  Identify the time interval and the corresponding distance interval on the curve.

    2.  Calculate the gradient for the said interval.

    The gradient of the distance-time graph, that is, the slope of the said curve gives the speed of that object.

    Say, for the time interval t1 and t2, the corresponding distance interval is  s1 and s2 Then, the gradient (that is, speed) is given by "

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 4 years ago

    An example of the given situation is as follows-

    A train/ metro that starts from rest gradually picks up speed and starts accelerating. At this stage, the speed increases but after sometime, the train acquires a constant speed( runs at a uniform speed). On approaching the next station, the train starts slowing down in order to halt( speed decreases).

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Gaurav Seth 4 years ago

    distance is the actuall path covered by a body.
    displacement is the shortest distance.
    1. on a straight line distance is equal to displlacement but if the object come to its origin then displacement is 0.
    2 on a moving plane distance is the path covered by body +path travelled by plane but the displacement is the distnace covered by plane only .

    2Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Yogita Ingle 4 years ago

    No. Differentiating Property Velocity Speed
    1 Definition
    • Velocity can be defined as the rate at which an object changes position in a certain direction.
    • The rate at which an object covers a certain distance is known as speed.
    2 Type of quantity
    • Vector quantity
    • Scalar quantity
    3 Magnitude
    • Velocity can be zero, negative, or positive.
    • Speed can never be negative or zero.
    4 Change of direction
    • The velocity of the object changes with the change in direction, therefore the object must follow one direction.
    • The average speed will continue to count even if the object changes direction.
    5 Interrelation
    • An object may possess different velocities but the same speed.
    • Speed may or may not be equal to velocity.
    6 Unit (SI)
    • Velocity is measured in m/s
    • Speed is measured in m/s

    2Thank You

    Bhawna Dhami 4 years ago

    Speed =distance/time Velocity=displacement/time

    2Thank You

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    • Posted by Naitik Kumar 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Aliza Taufiq 4 years ago

    distance and mass

    0Thank You

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    • Posted by Aliza Taufiq 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Niyati Tyagi 4 years ago

    Evaporation causes cooling

    0Thank You

    Yogita Ingle 4 years ago

    Actually, evaporation is a cooling process because when liquid turns to gas, it needs more energy and so it has to take that energy from its surrounding. The energy is in the form of heat and when the energy (heat) leaves with the evaporating liquid; surrounding gets cooler.

    1Thank You

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    • Posted by Aliza Taufiq 4 years ago

    CBSE > Class 09 > Science
    • 3 answers

    Prachi Sethi 4 years ago

    https://youtu.be/0pJVD5j6foA

    0Thank You

    Sarita Panda 4 years ago

    Evaporation

    1Thank You

    Aliza Taufiq 4 years ago

    a) Evaporation b) Condensation** Please answer.

    0Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Keerti Singh 4 years ago

    Average speed = total distance covered/total time taken. Uniform speed: When object covers equal distance in equal intervals of time, this speed of the body is known as uniform speed. Uniform velocity: When velocity of object do not change with time, it is said to have uniform velocity. Uniform acceleration: Change of equal velocity in equal intervals of time is called uniform acceleration.

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Lakshmi Thite 4 years ago

    No speed of a particle cannot be negative because it is a scalar quantity. Velocity can be positive negative and zero because it is a vector quantity

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Aliza Taufiq 4 years ago

    I think It is speed because only magnitude is given here, not the direction which states that it is a scalar quantity (that is speed not velocity). Hope you get it...

    1Thank You

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    • Posted by Sweta Soreng 4 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 4 years ago

    Distance travelled by a particale can be greater than the magnitude of displacement. For instance a person Jaibirjakhar goes from home to school which is 2 km from his home and returns back from the same path... The distance travelled will be 2+2=4 km while the displacement will be 0 km as the starting point and ending point is same.. hence distance in this case will be greater than the displacement at the same time..

    1Thank You

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    • Posted by Sakshi Kumari 4 years ago

    CBSE > Class 09 > Science
    • 2 answers

    Yogita Ingle 4 years ago

    Liquid argon has a boiling point of –303°F (–186°C).

    0Thank You

    Nisha Menon 4 years ago

    -185.8C

    0Thank You

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