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Sana(Silent Love).. ?? 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
A solenoid is a generic term for a coil of wire used as an electromagnet. It also refers to any device that converts electrical energy to mechanical energy using a solenoid. The device creates a magnetic field from electric current and uses the magnetic field to create linear motion.
<div style="border:0px; margin:0px; padding:0px"> </div><font color="#222222"><font face="arial, sans-serif"><font style="box-sizing: border-box;">1. The magnetic field for the current carrying solenoid </font></font></font>
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<div style="border:0px; margin:0px; padding:0px">2 For bar magnet.</div>
<div style="border:0px; margin:0px; padding:0px">Posted by Sana(Silent Love).. ?? 5 years, 5 months ago
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Posted by Pooja Fojdar 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Spherical mirrors are of two types:
- Convex mirrors or diverging mirrors in which the reflecting surface is curved outwards.
- Concave mirrors or converging mirrors in which the reflecting surface is curved inwards. Some terms related to spherical mirrors:1. The centre of curvature (C) of a spherical mirror is the centre of the hollow sphere of glass, of which the spherical mirror is a part.
- The radius of curvature (R) of a spherical mirror is the radius of the hollow sphere of glass, of which the spherical mirror is a part.
- The pole (P) of a spherical mirror is the centre of the mirror.
- The principal axis of a spherical mirror is a straight line passing through the centre of curvature C and pole P of the spherical mirror.
- The principal focus (F) of a concave mirror is a point on the principal axis at which the rays of light incident on the mirror, in a direction parallel to the principal axis, actually meet after reflection from the mirror.
- The principal focus (F) of a convex mirror is a point on the principal axis from which the rays of light incident on the mirror, in a direction parallel to the principal axis, appear to diverge after reflection from the mirror.
- The focal length (f) of a mirror is the distance between its pole (P) and principal focus (F).
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For spherical mirrors of small aperture, R = 2f.
Image formation by Spherical Mirrors:The nature, position and size of the image formed by a concave mirror depends on the position of the object in relation to points P, F and C. The image formed is real for some positions of the object. It is found to be a virtual image for a certain other position. The image is either magnified, reduced or has the same size, depending on the position of the object.
Posted by Lucifer?? Morningstar?? 5 years, 5 months ago
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Sana(Silent Love).. ?? 5 years, 5 months ago
Posted by Riya Saini 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Inhalation is an active process because it requires energy and work. Expiration is typically a passive process that happens from the relaxation of the diaphragm muscle (that contracted during inspiration). The primary reason that expiration is passive is due to the elastic recoil of the lungs. Exhalation begins when inhalation ends. The process of inhalation occurs due to an increase in the lung volume (diaphragm contraction and chest wall expansion) which results in a decrease in lung pressure in comparison to the atmosphere; thus, air rushes in the airway. There is no contraction of muscles during exhalation; it is considered a passive process.
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Meghna Thapar 5 years, 5 months ago
The modern or long form of the periodic table is based on the modern periodic law. The table is the arrangement of elements in increasing order of their atomic numbers. The modern periodic table is the present form of the periodic table. And it consists of 18 vertical columns and 7 horizontal rows.
Main features of long form of periodic table:
- Groups. The vertical columns in the periodic table are known as groups. ...
- Periods. There are 7 periods in the long form of periodic table. ...
- Lanthanoids. Group of 14 elements in the sixth period. ...
- Actinides. Group of 14 elements in the seventh period after actinium.
Posted by Gagandeep Singh 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The decomposition of vegetable matter into compost in an exothermic reaction beacouse microbes need energy to break the bond of vegetable that's why it produces heat energy hence this decomposition reaction is a exothermic reaction.
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Yogita Ingle 5 years, 5 months ago
Oxytocin is a hormone that acts on organs in the body (including the breast and uterus) and as a chemical messenger in the brain, controlling key aspects of the reproductive system, including childbirth and lactation, and aspects of human behaviour.
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Yogita Ingle 5 years, 5 months ago
When chlorine (Cl2) gas is passed through an aqueous solution of potassium iodide (KI), the products formed are solid iodine (I2) and potassium chloride (KCl). This is a displacement reaction in which the less reactive iodine in potassium iodide is displaced by the more reactive chlorine. The equation can be written as:
2KI(aq)+Cl2(g) → 2KCl(aq)+I2(s)
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Impulse is a vector, so a negative impulse means the net force is in the negative direction. Air bags in cars are designed with impulse, or momentum change principles. When a driver gets into an accident their momentum carries them forward into the steering wheel. By putting an airbag in the car, a smaller force is exerted over a longer period of time to change the momentum of the driver to a stop.
Posted by Oav Ka Rajkumar ??? 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
A Bunsen burner flame produces energy from burning gas. If the air hole is open the flame burns in plenty of oxygen. Combustion is complete and a blue flame is seen. Increasing the amount of fuel gas flow through the tube by opening the needle valve will increase the size of the flame. However, unless the airflow is adjusted as well, the flame temperature will decrease because an increased amount of gas is now mixed with the same amount of air, starving the flame of oxygen.
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Kunal Thakur 5 years, 5 months ago
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| INERTIA OF MOTION | INERTIA OF REST |
| (1) The inherent property of a body by virtue of which it cannot change its state of motion, is called inertia of motion . (2)It is due to inertia of motion that a rotating fan continues to rotate for some time even after it is switched off or a person falls when he jumps from a moving bus. |
(1) The inherent property of a body by virtue of which it cannot change its position of rest, is called inertia of rest . (2) It is due to inertia of rest that passengers in a vehicle get a backward jerk when the vehicle starts suddenly or fruits hanging from a branch fall down when the branch is shaken |
Drift? Boi? 5 years, 5 months ago
Posted by Lucifer ? Morningstar? 5 years, 5 months ago
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Kunal Thakur 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
An object cannot change its state of rest or state of uniform motion in a straight line by itself. In other words, all objects resist a change in their state of rest or motion.
This tendency of objects to resist or oppose change in their state of rest or motion is called inertia.
Mass of an object is the measure of its inertia.
Ishika ? 5 years, 5 months ago
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Gagandeep Singh 5 years, 5 months ago
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