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Total energy: decreases - because resistive forces act on the sat
You should try to send the whole question... I would use the definition of the 1st law of thermodynamics here. Since the gas is expanding and pushing onto the piston, first of all energy is being supplied to the system(positive q) and work is being done BY THE SYSTEM to push the piston(negative w). So the equation we use is U=q-w, isolate q and you get U+q=w(now just insert values and find answer).
Use the equation F=BILsin(theta). The variables are F and theta in this case with B, I and L being constant so just take some values of theta and find the relevant values of F(using F=sin(theta) since the rest of the variables are constant as I stated). Allowing you to draw a graph for example, I'll take Theta=90, 45, 0 and find the values of F(relative to scale).
Bro the marking scheme says that A line and a curve should be drawn .. but when I searched the similar solution it said to draw decreasing gradient curve only
Yeah if you follow what I said, you will get a curve exactly like that...
You can draw any curve for b(i) as long as it's half wave rectification. And in b(ii), your graph must have a phase difference of 180 degrees since diode A and B are reverse relative to each other.
it was quite okay. how was yours?
Large closed container with a beaker containing salt and water solution(placed on a tripod with a fire gauge and bunsen burner beneath it), the large closed container will be connected to a vacuum and a pressure gauge will be placed in the container for pressure readings.
Thank you!
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