Recent content by Dez1

Homework Statement Provide a proof of Gauss’s law starting from Coulomb’s law for a point charge Homework Equations F=kq1.q2/r^2 (closed)s∫E.n.da=qenc/ε0 The Attempt at a Solution My starting point is: F21=1/(4∏.ε0).(q2.q1)/r21^2.r(unit vector)21 *Note, the 21 terms after...

Homework Statement An inventor claims to have developed an engine which takes in 1.1x108J of heat energy at 400K, and rejects 5.0x107J of heat energy at 200K. Would you advise investing in this project? Explain your answer. Homework Equations W = Q1 – Q2 η = W/Q1 = 1 – Q2/Q1 The...