counterexample for boiling point:
I saw that boiling point will increase because: more energy is required for the solvent's vapor pressure to reach the external pressure.
counterexample for freezing point:
Because of increasing the pressure, which prevents water molecules properly arranging...
I know that metal is a "reservoir" of electrons, whereby electrons can flow out and in easily, so when conducting sphere is rubbed against metals, is there even a resulting charge on the conducting sphere?
i don't understand the answer:
Nichrome has a higher resistance than copper wire. There is a greater potential
difference across the nichrome than the copper wire.
From ,the resistance of nichrome is low enough such that there is significant power
^ i feel like the bold parts contradict...
^because in my textbook, the set up doesn't even show the direction of dot/cross at points A/D, so we won't know the direction of current. then how are we supposed to use fleming's left hand rule to determine the direction of force?
perhaps? because according to the article, the thinner the wire used, the more thermal energy generated in the wire[according to the equation R=(ρ)x (ℓ/A) ], so I assumed since we usually use thinner wires to change our phones, it means our phones are consuming more energy than fridge (which...
yep I think they are. my reasoning is: a cross represents the magnetic field traveling into the plane of the paper, thus the index finger is pointing into the paper. then, the current is flowing from right to left(because the positive terminal of the battery is on the right while negative...