dont they accelerate in the electric field?every charged particle in electric field is accelerated...then what and at what time is the velocity we calculate from above formula??
During discharge tube experiment, the cathode rays are emitted from cathode at very low pressure...it is said that these rays move at very high velocity(if we apply high Potential Difference between 2 electrodes)...do these rays( stream of electrons) travel in uniform velocity or aren't they...
1.what is the main cause for the emf produced in a thermocouple when their two junctions are at different temperatures?
2.why is it necessary that the emf produced causes the current to pass from the metal (which is at the top of thermoelectric series) to the other metal (which is at lower...
so,in rolling friction,if a body is being accelerated,its frictional force always acts in the direction of acceleration(that may b -ve)/..but in uniform motion, the frictional force acts opposite to the motion of the rolling body..should i conclude like this?
1. if a ball rolling towards east frictional force also acts towards east...why is it so??(i mean to say doesn't frictional force act in opposite to the direction of motion?)
2. if a bicycle is being pedaled, then the frictional force acts in backward direction in the front wheels and in...
but won't black holes(after many of them are formed in each galaxy) consume all the matters(/antimatters) of the universe to form the tiny condensed form of vast energy as it was before the big bang?isnt it possible?