CBSE TEST PAPER-02 CLASS - IX BIOLOGY (Improvement in food Resources) 1. Weeds affect the crop plants by – (a) Killing of plants in field before they grow. (b) Dominating the plants to grow. (c) Competing for various resources of crops (plants) (d) All the above. 2. ‘Operation Flood’ in India refers to – (a) Controlling floods during rainy season. (b) Increase in milk production by development of co-operative dairy on a large scale. (c)Increase in fish production during floods.
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We need to question everything. Questioning ideas and things we know as fact is how we learn and progress. Galileo Galilei‚ Johannes Kepler‚ and Isaac Newton understood this. Science had some answers for things‚ however since they questioned those things they were able to get to truth. Galileo was born in 1564. He was a professor of mathematics. It is a common misconception that Galileo invented the telescope. However‚ that is not true. Galileo was the first person to look at the sky through a telescope
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Identify Laws of Motion and Thermodynamics The first example is oscillating a pendulum‚ which is categorized in the law of motion due to the object remaining in that state unless an external force is applied. The second example stating cooling food and drinks in a refrigerator is categorized in the laws of Thermodynamics due to thermalization. The third example of using the coffeemaker can be a combination of both laws due to moving touching to coffeemaker to make create an action is Law of Motion
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Interpretation of Results The objective of the experiment‚ entitled Newton’s Second Law of Motion‚ is to verify the direct proportionality of acceleration and net force if the mass of the body is constant and to verify the inverse proportionality of acceleration and mass if the net force is constant. It is now clearly explained and proven that Newton’s second law of motion is true. By experiments‚ the law is proved. All data produced results parallel to what Newton states. We can say that the
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Johannes Kepler was a key figure during the Scientific Revolution and his work in astronomy provided the framework for modern astronomy and physics. Kepler is best-known for his laws of planetary motion. His laws of planetary motion improved upon Copernicus’s heliocentric theory by explaining how the speeds of the planets varied and by using elliptical orbits rather than circular orbits. Kepler was born in the Free Imperial City of Weil der Stadt on December 27th‚ 1571. Kepler was schooled at the
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BCA- I Physics Assignment 1 Unit I Laws of Motion 1. A man of mass 70kg stands on a weighing machine in a lift which is moving (a) upwards with a uniform speed of 10m/s. (a) downwards with a uniform acceleration of 5m/s2 . (a) upwards with a uniform acceleration of 5m/s2. What would be the readings in each case? (d)what would be the reading if lift mechanism failed and it hurtled down freely under gravity? 2. A shell of mass 0.2kg is fired by
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E104: NEWTON’S SECOND LAW OF MOTION METHODOLOGY In Part A of the experiment (Constant Mass‚ Changing Net Force)‚ place the dynamics track on the laboratory table. Make sure that it is horizontal by placing the dynamics cart on the track. If the dynamics cart does not move‚ then the track is already horizontal. Otherwise‚ make the necessary adjustments. Get the mass of the dynamics cart. Write this under m1 in Table 1. Set the first photogate at the 20-cm mark of the dynamics track and the second
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The Law of Three or The Three-Fold Law is the belief and principle on which magic is used. This is where the law relates to the use of power and energy‚ for when used‚ the power is then returned to the sender‚ three times the level it was sent out. The Rule of Three (also Three-fold Law or Law of Return) is a religious tenet. It states that whatever energy a person puts out into the world‚ be it positive or negative‚ will be returned. This is a cautionary one. It also‚ if heeded‚ keeps individuals
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Johannes Brahms was a German Composer‚ Pianist and conductor of the 19th century or the Romantic period. He was one of the 3 B?s or the Big three: Bach‚ Beethoven and Brahms. Johannes was a very self-critic man he burned many of his pieces before he could get anyone?s opinion on them and he burned all of his compositions that he wrote before the age of 19. Johannes Brahms was born on Tuesday 7th may 1833‚ in the city of Hamburg the birthplace also of Mendelssohn. Johann Brahms was himself a musician
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Experiment 3.1 Newton’s Second Law of Motion Aim: To investigate the relationship between net force‚ mass and acceleration Hypothesis: Since Newton’s second law of motion states that the acceleration of an object is directly proportional to the total force acting upon that object‚ we can assume that the more mass being pulled down on the cart the greater the acceleration of it will be and therefore the greater its net force will be. Apparatus: Wheeled carts Pulleys Balance
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