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Newton's third law of motion || Action reaction law || Newton's 3 law || Contact force- Normal force ||

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Newton's third law states that “ EVERY ACTION HAS EQUAL AND OPPOSITE REACTION. ” It is a contact action reaction pair which applies on the two or more different bodies.  There are the following types of contact forces are:- 1. Normal reaction :-  It is a perpendicular force acting at the point of contact between the bodies.  Weight of the body is calculated using Normal reaction.  Direction of Normal is always perpendicular to to the surface in such a way that it tries to compress the body.  Let m be the mass of the body and N is the normal reaction and g is the acceleration due to gravity.  Then -                     N = mg 2. Tension :-  This forces are mainly seen in strings. It is a action reaction force which act in opposite directions. 
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What do you mean by a precipitation reaction? Explain by giving examples.

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Ques 15 : What do you mean by a precipitation reaction? Explain by giving examples. Ans 15 : A reaction in which an insoluble solid (called precipitate) is formed is called a  precipitation reaction.  It get deposited at the bottom of the container. It is denoted by ↓. For example:      Na 2 Co 3 +   CaCl 2  →  CaCo 3  + 2 Na Cl In this reaction, calcium carbonate is obtained as a precipitate. Hence, it is a precipitation reaction.  «« Previous question              Next question »»
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Changing Trends And Career in Physical Education Solutions || Objective Type Questions || Objective Answers Chapter 1 Class 11 Solution || Physical Education ||

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Ques 1: “Physical Eduction is the sum of changes in an individual caused by experience centring motor activity” Who said this? (a) Prince martin  (b) Millions (c) Charls A.Butchar  (d) Cassidy Ans :  (d) Cassidy Ques 2: “Physical Education is the sum of men’s physical activities selected as to kind and conducted as to outcomes” who said this? (a) C.C.Covel  (b) Charls A Butcha (c) Williams  (d) J.B. Nash Ans :  (c) Williams Ques 3 : How many objectives of physical Education are there? (a) Four  (b) Five (c) Three  (d) Six Ans : (b) Five Ques 4 : What is the aim of physical Education? (a) Physical development  (b) Motor development (c) Mental Development  (d) All Round development Ans : (d) All Round development Ques 5: Sports management is based upon....? (a) Efficient and Talented officials  (b) Smart and clever officials (c) Weak and Greedy officials  (d) None of these  Ans : (a) Efficient and Talented of...
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Vistas Chapter-2 The Tiger King || Revision Notes Class 12 Board Exams

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                                            Vistas                                           Chapter -2                                      The Tiger King   “The Tiger King” is a story of an arrogant King who disproved the prophecy of the astrologer, but destiny proved to be powerful and the prediction which was made when the king was ten days old comes out to be true. The Maharaja Sir Jilani Jung Jung Bahadur was called “Tiger King”. When he was just 10 days old he asked intelligent questions to the astrologers and was told that he would be killed by a tiger. He uttered “Let tigers beware!” No other miracle took place, the child grew like any other Royal child drinking whit...
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Kinematics Important Questions Of Physics

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Ques 1. Mention the condition when an object is in motion (a) can be considered point object (b) can not be considered point object.  Ans . An object can be considered as a point object if (a) its size is negligible in comparison to the distance travelled by object (b) it's size is not negligible in comparison to the distance travelled by object. Ques 2 . Can Earth be regarded as a point object when it is describing its really journey around the sun? Ans.  Yes, because the diameter of earth is very small as compared to the radius of the orbital path of earth around the sun.   Ques 3. Can the speed of a body be negative?   Ans . No, because the speed of an object is the distance travelled by the by object in unit time and distance can never be negative. Ques 4. which speed is measured by the speedometer of your scooter?  Ans . The Speedometer measure the instantaneous speed of the scooter at a given instant of time. Ques 5.What does th...
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IPL 2023 Season Summary || Moments of IPL 2023

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  -  GT vs CSK  - Tushar Deshpande, the first-ever impact sub, proves too expensive. Williamson tears his ACL -  LSG vs DC  - Mark Wood fifer decimates Delhi -  RCB vs MI  - Back at Chinnaswamy, RCB smash MI. Kohli and Faf both got fifties -  CSK vs LSG  - CSK win a high scoring thriller by 12 runs. The difference - Dhoni's two sixes at the death -  KKR vs RCB  - Visitors outdone by spin. Suyash Sharma gets 3 on debut. Varun takes 4 and Shardul scores a match-winning 50 -  MI vs CSK  - Welcome back, Ajinkya Rahane. Scores his fastest IPL fifty -  GT vs KKR  - The Rinku game. Nothi ng more to say -  RCB vs LSG  - Pooran, Stoinis chase down 212. Avesh throws his helmet. Gambhir shushes the crowd. Harshal's failed mankad attempt -  DC vs MI  - MI win off the final ball, running 2 runs. Although Nortje nails 6 out of 6 Yorkers -  RR vs CSK  - Vintage Dhoni almost wins CSK an improbable g...
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Three oxides of lead on analysis were found to contain lead as under:(i) 3.45 g of yellow oxide contains 3.21 g of lead. (ii) 1.195 g of brown oxide contains 1.035 g of lead. (iii) 1.77 g of red oxide contains 1.61 g of lead. Show that these data illustrate law of multiple proportions.

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Ques : Three oxides of lead on analysis were found to contain lead as under: (i) 3.45 g of yellow oxide contains 3.21 g of lead. (ii) 1.195 g of brown oxide contains 1.035 g of lead. (iii) 1.77 g of red oxide contains 1.61 g of lead. Show that these data illustrate law of multiple proportions. Ans : The amounts of lead and oxygen in three oxides are : (i) Yellow oxide : Mass of lead = 3.21 g Mass of oxygen = 3.45 - 3.21                              = 0.24 g  (ii) Brown oxide : Mass of lead = 1.035 g                             Mass of oxygen = 1.195 - 1.035                                                          = 0.160 g (iii) Red oxide: Mass of lead = 1.61 g         ...
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