Physics It is easier to roll a barrel full of coal tar than to pull it because the full weight of the barrel comes into play when it is pulled more surface area of the barrel is in contact with the road when it is pulled the rolling friction is much less than the sliding friction coal tar is a liquid and it flows in the barrel when it is rolled the full weight of the barrel comes into play when it is pulled more surface area of the barrel is in contact with the road when it is pulled the rolling friction is much less than the sliding friction coal tar is a liquid and it flows in the barrel when it is rolled ANSWER DOWNLOAD EXAMIANS APP
Physics If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is 20 J 0.2 J 5 J 500 J 20 J 0.2 J 5 J 500 J ANSWER DOWNLOAD EXAMIANS APP
Physics Atmospheric pressure exerted on earth is due to Gravitational pull Uneven heating of earth Revolution of earth Rotation of earth Gravitational pull Uneven heating of earth Revolution of earth Rotation of earth ANSWER DOWNLOAD EXAMIANS APP
Physics Sending a frame to a group of stations is known as Single casting Multicasting Casting Spreading Single casting Multicasting Casting Spreading ANSWER DOWNLOAD EXAMIANS APP
Physics Water from soil enters into the root hairs owing to : Atmospheric pressure Osmotic pressure Capillary pressure Root pressure Atmospheric pressure Osmotic pressure Capillary pressure Root pressure ANSWER DOWNLOAD EXAMIANS APP
Physics The snow on the mountains does not melt all at once when it is heated by the sun because: It has a high latent heat of fusion It has a low specific heat capacity It becomes very hard It reflects most of the heat from the sun It has a high latent heat of fusion It has a low specific heat capacity It becomes very hard It reflects most of the heat from the sun ANSWER DOWNLOAD EXAMIANS APP
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