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The force exerted on a charged particle q moving with a velocity v through an electric and magnetic field, E and B respectively. F=qE+qvxB. We usually care mostly about the magnetic part. It is also worth...

This question is not particularly tricky as long as it is read carefully.
First, calculate the masses of the Star and the Exoplanet. Double the mass to find the star mass (M). To find the planet mas...

Plot: I-V curve of an ideal resistor is a straight line with a positive gradient passing through (0,0)The I-V curve of an ideal resistor is a straight line because ideal resistors strictly obey Ohm's law ...

Once you note that the height is constant, the key thing to remember here is that there is no unbalanced force acting on the mass. By this, I mean that since the mass is not accelerating (it is actually a...

The fusing red giant shell drifts away form the core forming planetary nebula. Leaving only very hot core (white dwarf) (1) The core is hotter than the shell , the star moves left on ...