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Q. Why do we wear clothes? Ans: We wear clothes for protection against climate and to look smart. Fabric is the material that is used to make clothing or household articles. Q. Of what material fabrics are made of? Ans: Fabrics are made up of smaller threads or hair like structure. single hair like structure  is called a fibre. Short fibres are called  Staple fibre . Long fibers are called   Filament fibre Q. What is natural fibre? Ans: Fibers obtained from natural sources like plants and animals is called natural fibre. e.g. cotton, Jute, silk, wool, etc (i)Vegetable Fibres: fibres which are obtained from different plants are called Vegetable Fibres.  For example Cotton is obtained from seed of the plant, jute is obtained from the stem of a plant and coir is the outer covering of coconut (ii) Animal Fibres: fibres which are obtained from different animal sources is called a Animal Fibres eg sheep goat, rabbits ,camels and silk worm.. Q. What...

1. An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff. 2. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car. 3. Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 2.6 seconds, what will be his final velocity and how far will he fall? 4. A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car and the distance traveled. 5. A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s2. Determine the time for the feather to fall to the surface of the moon. 6. Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that t...

1. How much work is done in moving a charge of 2 C across two points having a potentialdifference of 12 V? 2. A wire of resistance R is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R then the ratio of resultant to the original will be? 3. A radio set draws a current of 0.36 A for 15 minutes. Calculate the amount of electriccharge that flows through the circuit. 4. Potential difference between two points of a wire carrying 2 ampere current is 0.1 volt.Calculate the resistance between these points. 5. A simple electric circuit has a 24 V battery and a resistor of 60 ohms. What will be the current in the circuit? The resistance of the connecting wires is negligible. 6.Find resistance between A and B in following network Find resistance between A and B in following network[10th chapter Electricity]    To Get Complete Question,   Click Here You might also like: CBSE class 10 Physics Que...

NUMERICAL - Electricity and its effects For (Class X) 1. A resistance of 6 ohms is connected in series with another resistance of 4 ohms. A potential difference of 20 volts is applied across the combination. Calculate the current through the circuit and potential difference across the 6 ohm  resistance. 2. Calculate the number of electrons constituting one coulomb of charge per second through any cross section of a conductor. 3. How much work is done in moving a charge of 2 C across two points having a potential difference of 12 V ? 4. How much energy is given to each coulomb of charge passing through a 6 V battery ? 5. Calculate the work done in moving a charge of 5 Coulombs from a point at a potential of 210 Volts to another point at 240 Volts. 7. When a particle of charge 10 �C is brought from infinity to a point P, 2.0 mJ work is done by the external forces. What is the potential at P ? 9. How many electrons pass through a lamp in one minute if the current be 200 mA? 10. Calcu...