Recent content by lokifenrir96

Oh, so let me see if I understand you correctly. If we have a curve, and the point we are taking the tangent about is X, and to the right of X is A, and to the left of X is B. If we put a mirror at X which reflects A, the reflection must flow into A, but it does not need to flow into B...

Hi, I recently learned that to find the tangent at a point on any curve, you can simply place a mirror on that point and reflect the part of the curve on one side of that point such that the reflection flows smoothly into the other part of the curve on the other side. Once this is done, draw a...

Well-explained, thanks!

To be more specific, why is it that when the flammable gas or liquid is pumped through the barrel and ignited at the end of the barrel, the flame does not spread backwards along the stream of liquid/gas into the fuel container and cause an explosion? Is it simply because of the high pressure...

Wow thanks! So... I take it my guess regarding action and reaction forces is wrong, then?

Taking a guess: Since the instruments are attached to the elevator in some way, then as the lift accelerates upwards, the instruments would accelerate as well. By F=ma, they exert a force upwards. So for the weighing scale, it exerts a force upwards on the object. So the reaction force is...

Hi, I found two physics questions, and I'm still quite confused how this works: If a spring balance is attached to a weight, and the spring balance is then attached to the top of an elevator (on the inside), then it reads the force exerted by the weight downwards. But when the lift...

Like, when using FRHR, we need to know the direction of current through the coil, the direction of external magnetic field, and the direction of relative motion of the coil. Meaning how the coil is cutting across the magnetic field lines. In this case, the coil itself isn't moving, but the...

Hi, the explanation I have been given for how a transformer works is this: The current flows through the primary coil, hence generating a magnetic field around the coil. Imagine that the coil is wrapped in the anticlockwise direction around the soft iron core (and hence current flows...

bump? :)

Hi guys, I was wondering, in the process of electrolysis when we are looking at a galvanic CELL, meaning a battery, why is it that when we want to measure the voltage caused by using the two metals of different elements, we connect the voltmeter in series to the external circuit? If you...

Hi, am I right to say that: Hardness is a material's resistance to plastic deformation. E.g. if a spoon is hard, it's difficult to bend it. Toughness is how much deformation a material can undergo before fracture. E.g. how much energy a spoon can absorb while deforming before it breaks...

Thanks for your reply :) I kinda understand now that temperature only refers to kinetic energy, though just as a side note, the "potential energy" is was referring to in my question was that of chemical bonds between atoms in a molecule.

Hi :) Uhh, this question is quite simple but I'm still confused between these two terms... Am I right to say that internal energy is the sum of kinetic energy and potential energy of all the particles in a system? Meaning the two factors are the number of particles, and the energy of each...

Inertia and momentum are related concepts in physics, but they describe different aspects of an object's behavior. Here's the key difference between inertia and momentum: Inertia: Definition: Inertia is the property of an object that describes its resistance to a change in its state of...