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 Which of the metals has the maximum thermal conductivity? Aluminium Silver Iron Copper Aluminium Silver Iron Copper ANSWER DOWNLOAD EXAMIANS APP
Physics A photostat machine works on Magnetic image making Thermal image making Electromagnetic image making Electrostatic image making Magnetic image making Thermal image making Electromagnetic image making Electrostatic image making ANSWER DOWNLOAD EXAMIANS APP
Physics What principle/law explains the working of the hydraulic brakes in automobiles ? Archimedes' principle Bernoulli's law Pascal's law Posieulle's principle Archimedes' principle Bernoulli's law Pascal's law Posieulle's principle ANSWER DOWNLOAD EXAMIANS APP
Physics The point where total mass of a body is supposed to be concentrated is known as Centre of motion Centre of mass Dead centre Centre of gravity Centre of motion Centre of mass Dead centre Centre of gravity ANSWER DOWNLOAD EXAMIANS APP
Physics To convert temperature from Celcius to Kelvin scale, you must ________ the given temperature. Add 273 Subtract 273 Divide by 273 Multiply 273 Add 273 Subtract 273 Divide by 273 Multiply 273 ANSWER DOWNLOAD EXAMIANS APP
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