Physics It is easier to roll a barrel full of coal tar than to pull it because more surface area of the barrel is in contact with the road when it is pulled 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 the rolling friction is much less than the sliding friction more surface area of the barrel is in contact with the road when it is pulled 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 the rolling friction is much less than the sliding friction ANSWER DOWNLOAD EXAMIANS APP
Physics Which colour has the highest energy? White Red Violet Blue White Red Violet Blue ANSWER DOWNLOAD EXAMIANS APP
Physics The filament of electric bulb is made up of : Tungsten Nichrome Lead Copper Tungsten Nichrome Lead Copper ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an example for cantilever beam? Common balance See-saw Bridge Diving board Common balance See-saw Bridge Diving board ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of sky is due to Refraction of sunlight Reflection of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Scattering of longer wavelengths of sunlight in the atmosphere Refraction of sunlight Reflection of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Scattering of longer wavelengths of sunlight in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
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