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What are the dimensions of velocity ?

Posted by Saurabh Jadhav 5 years, 5 months ago

1 answers

Yogita Ingle 5 years, 5 months ago

The meaning of velocity of an object can be defined as the rate of change of the object’s position with respect to a frame of reference and time. It might sound complicated but velocity is basically speeding in a specific direction. It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity. The SI unit of it is meter per second (ms^-1) if there is a change in magnitude or the direction in the velocity of a body the body is said to be accelerating.

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What is pendulum

Posted by 4218 Sonu 5 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 5 months ago

A point mass attached to a light inextensible string and suspended from fixed support is called a simple pendulum. The vertical line passing through the fixed support is the mean position of a simple pendulum.

The vertical distance between the point of suspension and the centre of mass of the suspended body (when it is in mean position) is called the length of the simple pendulum denoted by L.

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Write down the function of artery and vein.

Posted by Nitin Nigam 5 years, 5 months ago

CBSE > Class 10 > Science

4 answers

Saurabh Jadhav 5 years, 5 months ago

Arteries carry blood from jeart and veins carry blood to the heart

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Anu Kumari 5 years, 5 months ago

Artery carry oxygenated blood except the pulmonary arteries. Artery have thick and elastic wall. In arteries there is no present valve. While i veins carry deoxygenated blood except pulmonary veins. It have less thick and elastic wall as compared to arteries. Valve is present in vein.

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Mayur Chauhan 5 years, 5 months ago

The vena cava is the largest vein in the body. Veins have much thinner walls than arteries. Because the pressure within them is low, veins have valves inside them to keep blood flowing only one way.

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Mayur Chauhan 5 years, 5 months ago

Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues.

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Mention two ways in which food gets oxidised in organisms

Posted by 015_Harshitha .M.R. 5 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 5 months ago

Glucose is the vital energy source for all the organisms. The nutrition consumed is converted into carbohydrates in which glucose is the key ingredient. The glucose is oxidized to provide energy to the organism. We know glucose is a huge molecule and breaks down into different smaller units. At first glucose which contains 6 carbon molecules is broken in the cytoplasm of cells of all organisms. In this process we obtain a 3 carbon molecule compound called pyruvate. Further break down of pyruvate takes place in different manners in different organisms. Following are the different ways in which the breakdown of glucose takes place
Anaerobic Respiration: The anaerobic respiration process takes place in the absence of oxygen. For example: In yeast during fermentation. In this process the pyruvate is converted into ethanol and carbon dioxide.
Aerobic Respiration: In aerobic respiration, breakdown of pyruvate takes place in the presence of oxygen to give rise to 3 molecules of carbon dioxide and water. The release of energy in aerobic respiration is much more than anaerobic respiration.
Lack of Oxygen: At times when there is a lack of oxygen in our body, mainly during vigorous activity, in our muscles, pyruvate is converted into lactic acid which is a 3 carbon molecule compound. The formation of lactic acid in muscles causes cramp.

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Define magnetic field line

Posted by Alok Yadav 5 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 5 months ago

Magnetic field lines describe the structure of the magnetic field in space around the magnet.

It's a way to visualize the magnetic field.

Properties:

1) The lines start from North pole and end on south pole. The lines always make a complete loop.

2) The lines never cross over each other.

3) The magnetic force at a point is given by the tangent to the field line at that point.

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Explain the physical and chemical properties of acid and base

Posted by Syed Sadiq Ahamed 5 years, 5 months ago

CBSE > Class 10 > Science

3 answers

Anu Kumari 5 years, 5 months ago

Physical property of acid Sour in taste. It turn the blue litmus into red. It conduct electricity . It turn the methyl orange into red.

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? Pranali.A.P ? 5 years, 5 months ago

It has a sour taste. It turns blue litmus to red. It turns methyl orange to red. Acids are electrolyte

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? Pranali.A.P ? 5 years, 5 months ago

Acids are sour in taste. Acids react with carbonates and hydrogen carbonates to form a salt, water, and carbon dioxide gas. Extremely active metals such as Potassium (K), Calcium (Ca), Sodium (Na), etc tend to explode when combined with acids. Weak Acids like Carbonic Acid doesn't act with any metal at all.

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Jai Free fire

Posted by Rahul Kumar 5 years, 5 months ago

CBSE > Class 10 > Science

2 answers

Fraaz Khan 5 years, 5 months ago

Ye pubg ka chota bhai hai☠️☠️☠️

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Reaction of acids with metal carbonate:

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