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...
then example if the "magnitude" of the 1st conductor has a bigger magnetic strength of 10 and the 2nd conductor is 5, so in the end they will exert a magnetic force of magnitude 5 on each other ?
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 found current to be 2/5 A. then 2/5A multipled by 6s = 2.4C. and since one joule per coulomb is equal to the unit of p.d, i get 2.4J. I don't get 4.8J(supposed answer)
is this method accepted?
2V is split equally between the 2 5kohms resistor because they are of equal resistance.
2V=5kohms
2kohms= 0.8V
3kohms=1.2V.
p.d across P and Q= 1V-0.8V=0.2V
I don't understand why they said that the induced current flow is opposite to each other when it clearly states direction is to the right for both? https://www.physicsforums.com/attachments/285900
I feel that its M because as the conductor moves upwards, towards K, an equal but opposite force will be produced at M to pull the conductor downwards, but answer is K.
I feel that its M because as the conductor moves upwards, towards K, an equal but opposite force will be produced at M to pull the conductor downwards, but answer is K.
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
output.
^ 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...
so in my diagram, the north and south poles are lying on the same plane as the dots and crosses that's why the cross/dot are not used to show field-direction?
how do you know when the cross/dot is used or not used to show field-direction?
I saw note 2 already but how does it prove that the cross is not used to show field-direction?
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...