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Work and change in kinetic energy - Physics Forums I know that the net work = the change in kinetic energy, delta KE But what if the object has both the potential energy and kinetic energy, for example, a
Work Energy Theorem: Delta K Calculation for Particle Moving in x . . . A particle moving in the x direction is being acted upon by a net force F (x)=Cx^2, for some constant C The particle moves from x initial =L to x final=3L What is Delta K, the change in kinetic energy of the particle during that time? I tried thih by doing the integral of F (x), replacing x with 2L (because final-initial, 3L-L)
Find Thickness of Oil Film on Water, \lambda = 550 nm To find the thickness of an oil film on water that appears yellow-green at 550 nm, the refractive indices of oil (1 50) and water (1 33) are used in the equation for constructive interference The net phase difference is calculated, leading to the formula for thickness: d = (2m + 1)λ0 4nf The challenge lies in determining the appropriate integer value for m, as increasing m results in
Why is the net work done equal to the change in K. E. only? Why is it so that the net work done by a force on an object is equal to change in kinetic energy only and not any other form of energy like potential energy? Also is the work energy theorem valid for both conservative and non conservative forces
Momentum and net external force - Physics Forums Homework Statement In the picture Homework Equations In the picture attached The Attempt at a Solution For the firecracker problem, I believe the only net external force is gravity Therefore using, Fnet * delta t = delta p Change in momentum is 12 kg * m s Thus, the final momentum of the
Conceptually understanding change in potential energy with 0 net work Suppose somehow an object is moving upwards with a speed ##v##, at this point I start applying a force ##F## that is equal to its weight, so the net force on the object is zero So it will continue moving upwards with its initial speed Suppose after the height difference is ##h##, I stop
Calculating Total Resistance in a Circuit: Delta - Physics Forums To calculate total resistance between 22 Ω, 14 Ω, and 4 5 Ω, the delta-Y formula can be used, but simpler methods may yield quicker results Redrawing the circuit can help clarify the arrangement of resistors, allowing for easier series and parallel combinations The delta-Y transformation alters the resistance values, complicating the process of finding currents in specific branches Many
Air-Flow Between Two Different Pressures • Physics Forums In a high school engineering class, students are developing hovercrafts and seeking to understand airflow between two chambers with different pressures They need to derive equations for airflow based on variables like volume, pressure, and hole area, rather than relying on external sources A simplified flow equation through an orifice is provided, emphasizing the importance of the net