Low voltage power system: you want to "supercharge"1 your brand new tesla model 3 at a rate of 100 kw at home. for safety reasons, you chose a 5 v direct current (dc) voltage source. a) calculate the required current. b) assuming a cylindrical conductor with a current density of 10 a/mm2 , what diameter conductor would you need? c) assuming copper with a resistivity of rhocu = 1.67×10−8 ωm and a cable length

What is the frequency of a light wave with a wavelength of 620nm

Aparticle of mass m is projected with an initial velocity v0 in a direction making an angle α with the horizontal level ground as shown in the figure. the motion of the particle occurs under a uniform gravitational field g pointing downward. (a) write down the lagrangian of the system by using the cartesian coordinates (x, y). (b) is there any cyclic coordinate(s). if so, interpret it (them) physically. (c) find the euler-lagrange equations. find at least one constant of motion. (d) solve the differential equation in part (c) and obtain x and y coordinates of the projectile as a function of time. (e) construct the hamiltonian of the system, h, and write down the hamilton’s equations (canonical equations) of motion.

Explain why electric current cannot exist if a current doesn't have a voltage source.