Một bể nước cao 1m mực nước cách miệng bể 10cm a, tính áp xuất do nước gây ra tại điểm A cách miệng bể 45cm
b. tính áp xuất do cột nước gây ra tại đáy bể biết d nước bằng 10000n/m

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.

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot