Saved Bookmarks
| 1. |
11(d) How far has B travelled by7. A ball is gently dropped from a height of 20 m. If its velocityincreases uniformly at the rate of 10 ms, with what velocitywill it strike the ground? After what time will it strike theground?8. The speed-time graph for a car is shown is Fig. 8.12.Speed (ms)02104 6Time (s)Fig. 8.12(a) Find how far does the car travel in the first 4 seconds.Shade the area on the graph that represents the distancetravelled by the car during the period.(b) Which part of the graph represents uniform motion of thecar?9. State which of the following situations are possible and givean example for each of these:(a) an object with a constant acceleration but with zero velocity(b) an object moving in a certain direction with an accelerationin the perpendicular direction.10. An artificial satellite is moving in a circular orbit of radius42250 km. Calculate its speed if it takes 24 hours to revolvearound the earth. |
|
Answer» Answer: Explanation: answered What are insulators? Give one example. 2 SEE ANSWERS Ask bhargavikborah about this question... Answer 5.0/5 1 kellyquinn13 Ace 741 answers 57.8K people helped A material that does not easily transmit energy, such as electric current (see also current) or heat. Materials such as wood, plastic, and ceramics are insulators. Fiberglass is an example of a heat insulator. (Compare conductor.) Examples of insulators include plastics, Styrofoam, paper, rubber, GLASS and dry air. The division of materials into the categories of conductors and insulators is a somewhat artificial division. bolivianouft and 3 more users found this answer helpful THANKS 1 5.0 (2 votes) Add comment Answer 0 ShivamRokz Helping Hand 47 answers 295 people helped Answer: material that do not ALLOW flow of electric current is called insulator. ex.wood ,pencil,Rubber,plastic THANKS 0 0.0 (0 votes) Add comment Still have QUESTIONS? FIND MORE ANSWERS ASK YOUR QUESTION New questions in Science do you think beauty and art is closely related to each other? 6 A special coconut grows on few islands in Seychelles. This is very large in size. The new plant grows where the fruit falls on the ground from the c… 10.The Force which is responsible for changing the state of motion of an object in all these condition which oppose the force in which dirtection, for… A student observed the cross-section of two blood vessels A and B with the help of a microscope.The table lists the observations made by the student. … People of which region follow the'Slash and burn' agriculture? a)None of these b)Ganga-Brahmaputra Basin c)Amazon Basin d)Natural regions Magnet is discovered by .* 1 point cobbler shephered wood CUTTER farmer Which is an example of insulator. * 1 point copper wire salt solution plastic wire tap water the forest is a purifier of air and ________________ (b) Name the vessel that carries oxygen rich blood from heart to all parts of the body. pl any one wspp me my no. 7008805540 any bad boy pl Name the brain development disorder that inspires social interactions & causes restricted & repetitive behaviour. a) Autism b) Alzheimer's dis… Draw ray diagram when object is placed 1.beyond C 2 at C 3 between C and F and also wrrite the nature of image formed On which of the following scales is the magnitude of an earthquake measured? 1.Celsius 2.Richter 3.Fahrenheit 4.None of above Wa muscles cells and branched b. Ovipanow animals give birth to YOUNG c- egg laid after fentilization is made up a single cell. d an embryo is made up… 6. Which of these is a purification technique for the removal of insoluble impurities? (a) Distillation (b) Boiling (c) Evaporation (d) Sedimentation … What is dry ice? What happens to it as it warms up? Look at the picture given below and answer the questions: (i) Where is this piece of sculpture found? (ii) Give the title of the story made on it. OR … An object floats when it is placed in water at 4℃. It is observed that on heating the water above this temperature, the object sinks. Give reason. * How can room temperature water evaporate? Iron is more reactive than copper. Can you write an activity to show this? class 8 science LOAD MORE Previous Next jianaarnold6 Ra |
|