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Yogita Ingle 5 years, 5 months ago
The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.
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Aim: To study the magnetic field due to a straight current-carrying conductor.
Apparatus Required: A thick conducting wire, battery, rheostat, magnetic needle, ammeter (0-5 A), key, a cardboard, a stand to hold the wire, iron filings and sprinkler of iron filings.
Procedure: Attach the thick wire through a hole at the middle of the cardboard and clamp it in a stand. Attach the ends of the wire through a key, variable resistor and an ammeter. on either side of a battery and hold it vertically and perpendicularly to the board. Spread the iron filings uniformly on the cardboard and place the magnetic needle on the board. Close the key and tap the cardboard slightly and observe the orientation of iron filings. Magnetic field around a straight conducting wired concentric circles indicate the field lines
Observation: Just on closing the key, the iron filings are aligned in the pattern of concentric circles around the wire. Conclusion: A current-carrying conductor is a source of magnetic field. The magnetic field is in the form of concentric circles whose centre lies on the wire.
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Yogita Ingle 5 years, 5 months ago
Nails are The hard surface which helps to protect the tips of your fingers and toes.
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Yogita Ingle 5 years, 1 month ago
The amount of urine produced depends on the amount of excess water and dissolved wastes that are present in the body. Other factors such as habitat and hormone such as Anti-diuretic hormone (ADH) also regulates the amount of urine produced. When excess water is more in the body, diluted urine is excreted whereas when the excess water is less, the urine is concentrated.
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Yogita Ingle 5 years, 5 months ago
q=ne
where
q is total charge
e=charge of one electron or proton
n= no. of gain or release electrons
so if n= 4×10-18
then
q=4×10-18×1.6×10-19
=6.4×1037
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Mikuu Zzz 5 years, 5 months ago
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Drift? Boi? 5 years, 5 months ago
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Posted by Ajay Dahiya 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The linear momentum of a body is defined as the product of its mass and linear velocity. If m is the mass of the body and v is the velocity, then
Linear momentu, p = mv
The angular momentum is the rotational analogy to linear momentum.
Angular momentum is equal to the product of the moment of inertia and angular velocity Iω
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Yogita Ingle 5 years, 5 months ago
Decomposition reaction is a type of reaction in which the compound breaks into two or more products.
Examples of decomposition reaction is:
Decomposition of baking soda.
Decomposition of hydrogen peroxide.
Decomposition of carbonic acid.
When decomposition takes place through heat energy, it is called as thermal decomposition.
Illustration for decomposition by heating process:
When calcium carbonate is heated, carbon dioxide is evaporated with calcium oxide.
When water is heated, it produces monatomic oxygen and hydrogen.
Posted by Priyanka Nitturkar 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Washing soda is a whitish, odourless powder. Its chemical formula is Na2CO3 and is better known as sodium carbonate. It is hygroscopic in nature that is, it absorbs moisture from the air. It is highly soluble in water and forms strongly alkaline water solution.
Washing soda is synthesized through Solvay’s process. Solvay’s process involves the reaction of sodium chloride, ammonia and carbon dioxide in water. Carbon dioxide involved is produced through calcium carbonate and the calcium oxide left is used in recovering ammonia from ammonium chloride.
At first, sodium bicarbonate is obtained which is then converted to sodium carbonate on heating. Finally, washing soda is produced by recrystallization of sodium carbonate.
- NaCl + NH3 + CO2 + H2O → NaHCO3 + NH4Cl
- 2 NaHCO3 → Na2CO3 + H2O + CO2
- Na2CO3 + 10H2O → Na2CO3.10H2O
Posted by Mohammad Shaheryar Mohammad Shaheryar 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
The biggest difference between the two is that the nervous system uses electrical impulses to send signals through neurones, whereas the hormonal system uses chemical messengers transported into blood plasma to target cells. The main difference between chemical synapse and electrical synapse is that in a chemical synapse, the nerve impulse passes chemically by means of neurotransmitters whereas an electrical synapse is connected through channel proteins. Nerve impulses pass through the membrane of the axon as an electrical signal. A chemical synapse is a gap between two neurons where information passes chemically, in the form of neurotransmitter molecules. An electrical synapse is a gap which has channel proteins connecting the two neurons, so the electrical signal can travel straight over the synapse.
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Yogita Ingle 5 years, 5 months ago
The characteristics of a chemical reaction are :
1Thank You