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  • 2 answers

Shantanu Madake 1 year, 8 months ago

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Harshit Tomar 1 year, 8 months ago

A is false but R is true
  • 5 answers

Mrunali Salunke 1 year, 8 months ago

Sound is a form of energy which produce sensation of hearing to our ears sound is produced due to vibration of objects

Sneha Panchal 1 year, 8 months ago

It's is produced by vibration Sensation of hearing in our ear

Sarthki Kulkarni 1 year, 8 months ago

Sound is the form of energy which give us senction of hearing it can be produced by collision of two objects

Smriti Gupta 1 year, 8 months ago

Sound is a form of energy which is produce by the collision of two things

Rahul ._. 1 year, 8 months ago

Sound is a form of energy which is produce by the collision of two things
  • 5 answers

Drashti Makan 1 year, 8 months ago

Lysosomes are called as suicide bags

Smriti Gupta 1 year, 8 months ago

Lysosomes

Shantanu Madake 1 year, 8 months ago

Lysosomes

Parth Goyal 1 year, 8 months ago

Lysosomes

Debayan Kar 1 year, 8 months ago

Lysosomes are suside bags
  • 1 answers

Sehajpreet Kaur 1 year, 8 months ago

In Δ ABC, P and Q are the mid-points of sides AB and BC respectively. ∴ PQ || AC and PQ = 12 AC ( Using mid-point theorem) …..(1) In ΔADC, R and S are the mid - points of CD and AD respectively. ∴ RS || AC and RS = 12 AC ( Using mid-point theorem) …..(2) From equation (1) and (2) , we obtain PQ || RS and PQ = RS Since in quadrilateral PQRs, one pair of opposite sides is equal and parallel to each other , it is a parallelogram. Let the diagonals of rhombus ABCD intersect each other at point O. In Quadrilateral OMQN, MQ || ON (∵ PQ || AC) QN || OM (∵ QR || BD) Therefore, OMQN is a parallelogram. ∴∠MQN=∠NOM and ∠PQR=∠NOM However, ∠NOM=90∘ (Diagonals of a rhombus are perpendicular to each other) ∴∠PQR=90∘ Clearly , PQRS is a parallelogram having one of its interior angles as 90∘ Hence, PQRS is a rectangle.
  • 2 answers

Smriti Gupta 1 year, 8 months ago

2

Harsh Soni 1 year, 8 months ago

Tha answer is 2
  • 3 answers

Smriti Gupta 1 year, 8 months ago

35.5 u

Srishti Singh 1 year, 8 months ago

For calculating this firstly u have to see it's mass number and percentage Formula- (Percentage×mass number/100) Calculation:- (75% × 35/100) + (25% × 37/100) =} (2625÷100)+(925÷100) =} (3550÷100) = 35.5u Answer :-. 35.5u *THANK YOU* 😊

Akshadeep Meshram 1 year, 8 months ago

Exam hone wala hai kya tera?
  • 1 answers

B. Wamsi 1 year, 9 months ago

Answer Kya ha
  • 2 answers

Shivam Sharma 1 year, 8 months ago

We get food from plants and animals

Gauri Gauri 1 year, 9 months ago

We get food from plants and animals
  • 5 answers

Akshadeep Meshram 1 year, 8 months ago

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Tanisha Chavan 1 year, 8 months ago

We should wear cotton clothes in hot summer days to keep us cool and comfortable this is due to the following reason: during hot summer we perspire more. Sweat is mainly water the cotton clothes are good absorber of sweat so cotton clothes absorb the sweat produced on our skin quickly and expose it to the atmosphere for evaporation the evaporation of sweat from cotton clothes takes the latent heat of vaporization from our skin in this way our skin loses heat and make us feel cool and comfortable.

Rishu Sindhu 1 year, 8 months ago

Cotton , being a good absorber of water and help in absorbing the sweet

Kiran Pargaien 1 year, 9 months ago

Because cotton clothes absorb the swet from our body and also takes heat from our body and from that heat cotton clothes will evaportes that sweet and as we know evaporation vaise colony effect . So, as the swet will evaporate our body feels cool.

Shashank J 1 year, 9 months ago

We will wet
  • 1 answers

Debayan Kar 1 year, 8 months ago

What type of questions from you asked
  • 3 answers

Ekam Choudhary 1 year, 8 months ago

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Neeraj Gujjar 001 1 year, 9 months ago

Gujhar

Sakshi Sakshi 1 year, 9 months ago

Prokaryotic cell diagram
  • 2 answers

Sudhir Kumar 1 year, 9 months ago

Which one

Ekam Choudhary 1 year, 9 months ago

😂
  • 1 answers

Ekam Choudhary 1 year, 8 months ago

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  • 5 answers

Samiya Chopra 1 year, 8 months ago

2,8,1 K,L,M

Rishu Sindhu 1 year, 8 months ago

2,8,1

Sudhir Kumar 1 year, 9 months ago

2 8 1

Smriti Gupta 1 year, 9 months ago

K L M N 2 8 1

Aryan Adarsh 1 year, 9 months ago

3S¹
  • 2 answers

Preeti Dabral 1 year, 9 months ago

Homogeneous mixture

Heterogeneous mixture

It has a uniform composition It has a non-uniform composition
It has only one phase There are two or more phases
It can’t be separated out physically It can be separated out physically
‘homo’ means the same ‘hetero’ means different
Example: a mixture of alcohol and water Example: a mixture of sodium chloride and sand

Ekam Choudhary 1 year, 8 months ago

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  • 2 answers

Akshadeep Meshram 1 year, 8 months ago

Diversity in living organisms deleted hai syllabus se!

Priyansu Kumar Sahoo 1 year, 9 months ago

Phanerogams are flowering plants. Its two groups are Gymnosperms and Angiosperms: Answer: Gymnosperms Angiosperms (i) They produce naked seeds. (ii) Considered more primitive in evolutionaiy term. (i) They produce well protected seeds, inside a fruit. (ii) Considered most highly evolved in evolutionary terms.
  • 5 answers

Priyansu Kumar Sahoo 1 year, 9 months ago

The nucleus is an organelle found in eukaryotic(having nucleus) cells. Inside its fully-enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. The nucleus is made up of a double membrane nuclear envelope that keeps the entire organelle encased, isolating its contents from the rest of the cell, and the nucleoskeleton which supports the cell as a whole. The nucleus maintains the security of the genes and controls the functions of the entire cell by regulating gene expression. This is why the nucleus is sometimes referred to as the control center, or the "brain," of the cell.

Priyansu Kumar Sahoo 1 year, 9 months ago

The nucleus is the center of an atom. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus with a very small contribution from the orbiting electrons. Neutrons have no charge and protons are positively charged. Nucleus is highly dense because of the whole mass of atom is concentrated in the nucleus, with electrons contributing negligible mass.

Priyansu Kumar Sahoo 1 year, 9 months ago

What is the nucleus? The nucleus is a double-membraned organelle that contains the genetic material and other instructions required for cellular processes. It is exclusively found in eukaryotic cells and is also one of the largest organelles. Outline the structure of the Nucleus. A double-membraned organelle known as the nuclear membrane/envelope engirdles the nucleus. The nucleolus is found within the nucleus, occupying 25% per cent of the volume. Thread-like, dense structures known as chromatins are found within the nucleus containing proteins and DNA. The mechanical strength for the nucleus is provided by the nuclear matrix, a network of fibres and filaments which performs functions similar to the cytoskeleton.

Priyansu Kumar Sahoo 1 year, 9 months ago

The nucleus (plural, nuclei) is a positively charged region at the center of the atom. It consists of two types of subatomic particles packed tightly together. The particles are protons, which have a positive electric charge, and neutrons, which are neutral in electric charge.

Aryan Singh 1 year, 9 months ago

Nucleus which means it's a small entity of atom where proton and neutron were merged. Its contain whole mass of an atom.
  • 3 answers

Priyansu Kumar Sahoo 1 year, 9 months ago

Dendrite Dendrites are long structures that connect nerve cells (neurons). These take up a lot of space on a neuron’s surface. They receive a large number of messages from other neurons and have specialised proteins that receive, process, and send these signals to the cell body. Organelles in dendrites allow them to modify protein density in response to changes in neuronal input frequency. This permits neurons to retain normal activity, which helps to prevent neurological illnesses like epilepsy. Dendrites are therefore essential for appropriate neuronal function and play a key part in physiological processes including memory formation . Function of dendrite Dendrites have the ability to accept impulses from other neurons, process them, and transmit the information to the neuron’s soma.

Priyansu Kumar Sahoo 1 year, 9 months ago

Dendrites: Many short fibres called dendrons arise from the cell body of neuron. They further divide to form dendrites. Dendrites receive messages from other neurons.

Priyansu Kumar Sahoo 1 year, 9 months ago

Dendrites are the finger-like cells present on the end of a neuron. They are short, branching fibres extending from the cell body of the nerve cell. This fibre increases the surface area available for receiving incoming information.
  • 1 answers

Priyansu Kumar Sahoo 1 year, 9 months ago

It is also defined as the amount of energy transferred or converted per unit time. P o w e r = W o r k d o n e T i m e t a k e n. The SI unit of power is watt. One watt is 1 joule per second.
  • 2 answers

Debayan Kar 1 year, 8 months ago

Priyanshu don't copy Full page

Aditi Vidhuri 1 year, 9 months ago

Balanced force - If a number of force are acting on a body and the body does not move than the forces are set to be Balanced force. Unbalanced force - If the resultant of force acting on a body is non-zero, the state of rest or motion of the body changes, such force acting on a body are called Unbalanced force
  • 4 answers

Akshadeep Meshram 1 year, 8 months ago

Stop confusing him with wrong answers! Actually, negative acceleration means the acceleration in the opposite direction of motion For understanding this you need to understand about sign convention in physics, For example:- If a body is moving in north direction with a constant velocity, you assume that the north direction is positive Therefore, the south direction will be negative When the body was moving in the north direction(positive direction), the velocity will be positive and if the body will move in the south direction its velocity will get negative. This happens because the velocity is a vector quantity and it needs magnitude and direction also it does not depend on decreasing or increasing of magnitude in depends also on the direction The same applies on the acceleration also if a body is accelerating in the positive direction is side acceleration will be positive and give the body will accelerate in the negative direction it acceleration will be negative For example:- a car is moving with a constant acceleration in the positive direction if the driver applies the break the car will have a retardation and hence after sometime the car will stop But in reality the brakes accelerate in the opposite direction of the motion and by various factors like friction brings to rest Your school teachers will tell you that retardation is the decreasing of velocity but in reality it is the acceleration only but in the opposite direction This will help you in your 11th class and 12th also but if you will follow this you will definitely face many problems in your class

Debayan Kar 1 year, 8 months ago

Rate of change of velocity with time at a negative rate is called negative acceleration

Priyansu Kumar Sahoo 1 year, 8 months ago

Negative acceleration: A body is said to be in negative acceleration when its velocity is getting reduced with respect to time. Example: Slow down of car on the application of brakes. Thus, speeding up a car is an example of positive acceleration and slowing down a moving vehicle is an example of negative acceleration.

Yashmay Saroj37 1 year, 8 months ago

decrease in the change of velocity of a body per unit time
  • 4 answers

Debayan Kar 1 year, 8 months ago

Rate of change of velocity with positive rate is called positive acceleration

Priyansu Kumar Sahoo 1 year, 9 months ago

Hint:Let us first discuss acceleration before moving on to the question. In mechanics, acceleration is the rate at which an object's velocity changes with respect to time. The term "acceleration" refers to a quantity that is measured in vectors (in that they have magnitude and direction). The direction of an object's acceleration is determined by the orientation of the net force acting on it. Complete answer: The term "positive acceleration" refers to a speed increase over time. The term "negative acceleration" refers to a decrease in speed over time. It's a stumbling block. Positive acceleration occurs when the vehicle's speed increases. The speed of the car diminishes as it slows down. When an object accelerates in the same direction as its velocity, the acceleration is in the same direction as the velocity. As a result, this object is moving at a positive rate. Additional information: Accelerometer is a device that measures the rate at which an object's velocity changes (i.e., its acceleration). Acceleration cannot be directly measured. As a result, an accelerometer monitors the force imposed by constraints on a reference mass in order to keep its location stable in an accelerating body. The link between constraint force and acceleration defined by Newton's second law is used to calculate acceleration: force = mass×acceleration . Note:The usage of positive and negative in physics always has a physical significance. It's more than just a mathematical notation. Positive and negative describe a direction when used to describe the velocity and acceleration of a moving object. Both velocity and acceleration are vector numbers, which necessitate the employment of a directional word to fully describe them.

Piyush Kumar 1 year, 9 months ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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Aditi Vidhuri 1 year, 9 months ago

The rate of change of velocity with time is called acceleration.
  • 1 answers

Smriti Gupta 1 year, 9 months ago

No. of moles = given mass / GAM
  • 3 answers

Komal Sidhu 🌺 Sidhu 1 year, 9 months ago

When a force of 1N causes displacement 1M in its own direction

Mahi Sarda 1 year, 9 months ago

When 1m of distance is covered by force of 1N it is said to 1 jule

Simran Kumari 1 year, 9 months ago

If a body moves 1m by the force of of 1N is said to be 1 joule

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