The KE (kinetic energy) of an electron revolving around a nucleus is always positive, and the PE (potential energy) of an electron is negative (except at infinity, where it is zero). Here, I am speaking from the point of view of the Rutherford model. The material from which I am reading from...
firstly, you put incorrect values into the formula v2=u2+2ad
v is the final velocity, u is the initial velocity. the final velocity has to be 0, as the block stops due to frictional force. secondly, you have taken the velocity that you obtained from (a), which is the velocity of the block if...
This should work for (b):
Conserving energy:
(1/2)×k x2 = f * d
where, k is spring constant, x is the compression of the spring, f is the frictional force, d is the distance traveled by the block before coming to a halt.
Homework Statement
"27 identical mercury drops are charged simultaneously to the same potential of 10 volt. What will be the potential if all the charged drops are made to combine to form one large drop? Assume all drops to be spherical."2. The attempt at a solution
To be quite honest, I cannot...
This question struck me when i was watching a liquid rise in a capillary tube. I'm curious to know from where the energy gets transferred to the liquid to rise above the surface. Well, one possible explanation that i can think of is air pressure. Though, it can be a possible reason only if the...
that's cool, but i have already understood how buoyancy is the same for equal displacement of the volume of a fluid. i wanted to know what the displacement of the volume of a fluid has to do with buoyancy and how the mechanism works.
when an object is stationary on then ground (which is perpendicular to the direction of g), the force which counteracts the gravitational force is normal force. Similarly, centripetal force acts in the opposite direction of centrifugal force, that is why the distance from the centre of a...