Certain brand of hotdog cooker works by applying a potential difference of 130 v across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced. the current is 12.6 a, and the energy required to cook one hot dog is 62.5 kj. if the rate at which energy is supplied is unchanged, how long will it take to cook three hot dogs simultaneously?

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?