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Define 1 Walt of power.

Posted by Muskan Mishra 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Dwanish Shetty{Ronaldo} 4 years, 2 months ago

Volt is the electrical unit of voltage or potential difference (symbol: V). One Volt is defined as energy consumption of one joule per electric charge of one coulomb.

Yogita Ingle 4 years, 2 months ago

1 watt power is defined as the power produced when 1 Joule of work is done for 1 second.

ANSWER

Define animal. Husbandry

Posted by Arya M 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 2 months ago

The branch of agriculture that focuses upon the proper feeding, shelter, health and breeding of the domestic animals is called animal husbandry.
To meet the growing the demand for food (milk, egg, meat, fish) with the growing population animal husbandry is necessary.

Abhishek Ladda 4 years, 2 months ago

Animal husbandry is a state of work to manage animals in a large amount or scale.... It is also known as science of breeding animals.....

ANSWER

Can anyone give me the important points on plant tissue?

Posted by Manya Puri 4 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Alok Gupta 4 years, 2 months ago

Plant tissue is a collection of similar cells performing an organized function for the plant. Each plant tissue is specialized for a unique purpose, and can be combined with other tissues to create organs such as leaves, flowers, stems and roots.

Narendra Dash 4 years, 2 months ago

YES

Trishla Jain 4 years, 2 months ago

1) Plant cell is larger in size. 2) It cannot change it's shape. 3) It is inclosed by a right cellulose cell wall n addition to plasma membrane. 4) A mature plant cell contains a large vacoule.

ANSWER

Human body is made up of cells of different shapes. justify this statement by drawing any four cells found in our body.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 2 months ago

Cells have different shapes because they do different things. Animal cells come in many different shapes and sizes. The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does.

ANSWER

A train is travelling at a speed of 90km/h. Brakes are applied so as to produce a uniform acceleration of -0.5 meter square. Find how far the train will go before it is brought to rest

Posted by Chandrika A G 4 years, 2 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

A farmer moves along the boundary

Posted by Laaibiang Mawlong 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Alok Gupta 4 years, 2 months ago

What the question

ANSWER

explain velocity time graph when a object having constant velocity

Posted by Asharani Kumbar 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Alok Gupta 4 years, 2 months ago

The displacement of this object is the area of the velocity time graph. ... A horizontal line on a speed-time graph represents a constant speed. A sloping line on a speed-time graph represents an acceleration. The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down.

ANSWER

What are the properties of mixture?

Posted by Harleen Kaur 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

Mixtures are made up of two or more substances that are not chemically combined with each other. The properties of mixtures are listed below.

The components of a mixture each keep their original properties.
The separation of components can be easily done.
The proportion of the components is variable.

ANSWER

What is turgid

Posted by Divanjyoti Deka 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

In biology, turgid refers to cells or tissues that are swollen from water uptake. Turgidity is the state of being swollen or turgid, especially due to high fluid content. Turgidity is a cellular state in which a plant cell, having absorbed water, is in a state of tension. A turgid plant cell is a plant cell that has been filled with water as a result of osmosis.

ANSWER

At what height the surface of earth does the acceleration due to gravity become zero

Posted by Himanshu Singh 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Harsh Kashyap 4 years, 2 months ago

Near the surface of earth gravity is zero

Nikhil Prajaapati 4 years, 2 months ago

Yes because it is his starting point

ANSWER

What are neutrons

Posted by Yashi Agrahari Agrahari 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Suzanne Smitha 4 years, 2 months ago

Neutron, neutral subatomic particlethat is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

ANSWER

What are valency

Posted by Yashi Agrahari Agrahari 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Trishla Jain 4 years, 2 months ago

Valency is a number with positive or negative charge which present on the elements and it is calculated by the help of valence shell.

ANSWER

Derive the mathematical relation of Newton's second law of motion

Posted by Maninder Kaur 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Himanshu Singh 4 years, 2 months ago

At what height the surface of earth does the acceleration a due to gravity become zero

Ash Greninja 4 years, 2 months ago

Let us consider an object of mass m, moving along a straight line with an initial velocity u. Let us say, after a certain time t, with a constant acceleration, the final velocity becomes v.Here we see that, the initial momentum(P1)=m*u The final momentum (P2)=m*v The change in momentum can be written as (P2-P1)=(m*v)-(m*u)=m(v-u) As we know, the rate of change of momentum with respect to time is proportional to the applied force. The applied force F=m*a.

ANSWER

The shape and size of cells are related to the specific function they perform. Justify the given statement with two suitable examples.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

Depending on cell function the shape and size varies from organism to organism . Cells may be vary spherical rectangular polygonal spindal etc. The diversity in cell is according to the role of function it has to perform. For example.. Smooth muscle cells perform the function of contraction and relaxation..In a way the variations structure of cells perform their specialized functions

ANSWER

What are swetchbugs? And what are pilade particles ?

Posted by Sarita Panda 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Tushar Kant Nayak 4 years, 2 months ago

Please give me thank in both answer then I will give you the correct answer

Tushar Kant Nayak 4 years, 2 months ago

I don't know

ANSWER

What is acceleration? Write its SI unit.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Soumya Phattepur 4 years, 2 months ago

It's SI UNIT IS m s–²

Soumya Phattepur 4 years, 2 months ago

THE RATE OF CHANGE OF CHANGE OF VELOCITY OF AN OBJECT WITH RESPECT TO TIME IS CALLED ACCELERATION

Yogita Ingle 4 years, 2 months ago

•Acceleration is the rate of change of velocity of an object with respect to time.

•An object's acceleration is the net result of all forces acting on the object, as described by Newton's Second Law.

•The SI unit for acceleration is metre per second squared (m s−²).

SI unit: m/s², m·s−², m s−²

Dhairya Gupta 4 years, 2 months ago

The rate of change of velocities is acceleration. Its unit is ms^-2

ANSWER

Starting from a stationary position, ram paddles his bicycle to attain a velocity of 10m/s in 2 seconds. Then he applies brakes such that the velocity of bicycle comes down to 4m/s in 5 seconds. calculate the acceleration in both the cases.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Ayush Tiwari 4 years, 2 months ago

1) 5m/s² 2) 0.8m/s²

ANSWER

What is the nature of the distance time graphs for uniform and non uniform motion of an object?

Posted by Komal Tank 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

(i) For uniform motion of an object, its distance-time graph is a straight line with constant slope.
(ii) For non-uniform motion of an object, its distance-time graph is a curved line with increasing or decreasing slope.

ANSWER

What is nucleolus ?

Posted by Kuber Jangid 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 2 months ago

Nucleolus :- A small body in the nucleus of a cell that contains protein and RNA and is the site for the synthesis of ribosomal RNA and for the formation of ribosomal subunits.

Shreyansh Jain 4 years, 2 months ago

Nucleolus are the component present in nucleus

ANSWER

Why animals color is different from our colur

Posted by Deshmukh Balur 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years, 2 months ago

Some animals are colored for physical protection, with pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be colored incidentally. For example, blood is red because the heme pigment needed to carry oxygen is red. Animals colored in these ways can have striking natural patterns.

Animals produce color in both direct and indirect ways. Direct production occurs through the presence of visible colored cells known as pigment which are particles of colored material such as freckles. Indirect production occurs by virtue of cells known as chromatophores which are pigment-containing cells such as hair follicles. The distribution of the pigment particles in the chromatophores can change under hormonal or neuronal control. For fishes it has been demonstrated that chromatophores may respond directly to environmental stimuli like visible light, UV-radiation, temperature, pH, chemicals, etc.

ANSWER

Joseph jogs from one end A to the another end B of a straight 300m road in 2 minutes 50 seconds and then turns around and jogs back to C in another one minute. what are Joseph's average speed and average velocities in jogging: a. From A to B b. From A to C

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 2 months ago

Answer:

Here we have,

Distance from point A to B = 300 m

Time taken = 2 minute 30 second = 2 x 60 + 30 s = 150 s

Distance from point B to C = 100 m

Time taken = 1 minute = 60 s

(a) Average speed and velocity from point A to B

(b) Average speed and velocity from B to C

ANSWER

Ali world driving to school computes the average speed for his trip to be 20km/hr. On his return trip around the same route there is less traffic and the average speed is 30km/hr. What is the average speed for Ali's trip?

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Aman Maurya 4 years, 2 months ago

24km/h

ANSWER

An object Travels 20m in 5 seconds and then another 20m in 15 seconds. what is the average speed of the object.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Gaurav Seth 4 years, 2 months ago

Distance1 = 20 m
Time1 = 4 s

Distance2 = 20 m
Time 2 = 10 s

Total Distance(D) = 20m + 20m = 40m
Total Time(T) = 4s + 10s = 14s

Average Speed = Total Distance(D) / Total Time(T) = D/T = 40/14
= 2.857 m/s

Shreyansh Jain 4 years, 2 months ago

2

ANSWER

Define 'average speed'. An object moves with a uniform speed of 10m/s for 5 seconds and then with a uniform speed of5m/s for 10 seconds. Find it's average speed.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

The distance covered by a body per unit time is called average speed or speed
Speed = distance/Time
1st case:-
10 m/s for 5 seconds
s = vt
= 10×5
= 50m
2nd case:-
5 m/s for 10 seconds
s = vt
= 5×10
= 50 m
Average velocity = total distance/total time
= 50+50/5+10
= 100/15
= 6.66 m/s

ANSWER

The velocity time graph of an object at rest is represented as a) x axis b) y axis c) a straight line parallel to x axis

Posted by Freddy Mon 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Shubham Prakash 4 years, 2 months ago

C.) A straight line parallel to x axis

ANSWER

A car starts from rest and reaches up to a velocity of 60km/hr in 10sec. Find the acceleration in m/s^2. A a) 2m/s^2 b) 1.5m/s^2 c) 1.66m/s^2 d) 1m/s^2

Posted by Freddy Mon 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Indrani Sahu 4 years, 2 months ago

Given u=0 v=60km/h =60*5/18 =16.66m/s t=10s a=? a=v-u/t a=16.66-0/10 a=1.66m/s²

Shubham Prakash 4 years, 2 months ago

C.) 1.66ms^2

ANSWER

What is the formula for displacement

Posted by Aditya Kumawat 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 2 months ago

Distance is the total movement of an object without any regard to direction. We can define distance as to how much ground an object has covered despite its starting or ending point.
Distance Formula

Δd = d₁+ d₂

Vijul Bansal 4 years, 2 months ago

Velocity multiple by time

ANSWER

To take biology which job we can do

Posted by Krish Achra? 4 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Amrit Raj 4 years, 2 months ago

Medical

Hescom Hescom 4 years, 2 months ago

ok

ANSWER

A train starting from a railway station and moving with uniform acceleration attains a speed 40km/h in 10minutes. Find its acceleration

Posted by Chandrika A G 4 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Srijal Verma 4 years, 2 months ago

As the train starts from rest position its initial velocity will be zero Given: u=0 v= 40km/h × 5/18 = 100/9m/sec T = 10min×60 = 600 sec a = v-u/t a = 100/9 - 0 / 600 a = 100/9×600 a = 1/54 m/sec² so , the answer is 1/54m/sec^2

Trishla Jain 4 years, 2 months ago

As the train starts from rest position its initial velocity will be zero Given: u=0 v= 40km/h × 5/18 = 100/9m/sec T = 10min×60 = 600 sec a = v-u/t a = 100/9 - 0 / 600 a = 100/9×600 a = 1/54 m/sec²

Jatin Singh 4 years, 2 months ago

12

ANSWER

When will next exam held?

Posted by Anurag Singh 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Amrit Raj 4 years, 2 months ago

After lockdowns

ANSWER

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