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Consider the whole system initially at rest. Suppose there is friction between the blocks, but not between the lower block and the floor....
Asked on 10/27/2020
3 answerIn this Veritasium video, Derek explains why solenoids (electromagnets) work. But I have a confusion. He only explained the case when the solenoid (electromagnet) attracts a...
Asked on 10/26/2020 by Abu Safwan Md farhan
2 answerThis is related to the Peltier effect. Using N-type semiconductor as a thermoelectric material, when a voltage is applied across it the majority charge carriers (electrons) move from the negative...
Asked on 10/26/2020 by Knight
1 answerFrom wikipedia thermodynamic activity is given as$$ a = exp left(frac{mu - mu_{0}} {RT}right)$$which becomes,$$ RTln(a) = mu - mu_{0}tag{1}$$ And i have to do...
Asked on 10/26/2020 by Basant Acharya
0 answerAccording to this article, there is a large quantity of Helium in space (stars), but very little is accessible to us on Earth:Helium is abundant in space,...
Asked on 10/26/2020 by Alexei
0 answerThe proton radius puzzle appears to one of the more widely known unsolved problems in physics, but doesn't it point to a much deeper issue? Nearly all of a baryon's...
Asked on 10/25/2020 by QuaternionsRock
2 answerI'm not sure whether this is the correct community to post this, so pardon me. I was studying the Bicycle Kinematic Model and came across 3 possible reference points for...
Asked on 10/25/2020 by Harish Iniyarajan
2 answerMy textbook states the following: " If a charge's velocity is constant, the rate-of-change of the $E$-field is steady, and the resulting $B$-field is constant.". To my understanding,...
Asked on 10/25/2020
3 answerQuestion: Show that the potential function is a non-exact differential (or a non-analytic function) for two-dimensional rotational flow. Doubt: I know what a potential function and its relation with components...
Asked on 10/25/2020 by Alpha
1 answerI have information about total force and moment on a body for three points, whose coordinates I know. From this information I would like to determine the point at which...
Asked on 10/25/2020 by HotDogCannon
2 answerGet help from others!
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