Recent content by andrevdh

well Physics is about objects in the real world :biggrin: jokes aside, a star emits electromagnetic radiation from its surface due to the temperature of the (very hot :smile:) material - similar to a hot filament in a light bulb. hotter material will emit more radiation energy per unit time. a...

that seems to be correct, yes. you can still use your right hand, though, just point the thumb in the opposite direction of the motion of the negative charge and the middle finger will show the direction of the force. but when you are confronted with a drawing requiring you to twist your hand in...

I was just engaging with the problem throught a thought experiment and wondering what will be the difference between long slim boxes and fat low boxes as they sink while they hold the same amount of coins in order to get a better feeling for the problem, but you are right because the volume...

I think it might be a little more complicated than that. Imagen that you add the same amount of coins to all the boxes at once and they all are sinking down. What do you think will happen?

Those are 2 different cases, they do not apply to the same vernier, that is to my knowledge you find only one vernier scale on a particular caliper.

The least count stays fixed for a particular vernier, they are the little steps the vernier can take with measurements. Your examples have one vernier with a 0.01 mm least count and the other with an 0.02 mm least count (note the extra 0 you omitted). This will stay the same for all measurements...

try separating the vector equation xA + yB into their two components - that is two equations, one for i and one for j

Maybe the plane of the coil was not aligned with magnetic north or something in the vicinity has offset the Earth's magnetic field?

In the theory section it advises you to adjust the current for a 45o deflection of the galvanometer and use that value to calculate BH

If you plot a position time graph, jon-b you will see that it froms a smooth rising curve. On the graph you can then construct tangent lines at various points on the curve and then determine the gradient of the tangent lines. These gradients will then be velocities of the moving object at the...

can one use Kepler's 3rd law?

will do

sorry, yes, I was communicating with shihab-kol

yes, the potential difference over each resistor will be the same. what should it be?

What would the potential difference be over each of the resistors since they are in series with each other? a voltmeter has a very high resistance so you could ignore them, they do not alter or influence the resistor circuit in any way.