Physics, 02.02.2020 16:52 unknowntay04

Afootball is kicked into the air with a velocity of 32m/s at an angle of 25º. at the very top of the ball’s path, its vertical velocity is

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 13:10

Which device uses ac current to operate?

Answers: 1

Answer

Physics, 22.06.2019 00:20

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

Answers: 1

Answer

Physics, 22.06.2019 00:20

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.

Answers: 1

Answer

Physics, 22.06.2019 09:30

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?

Answers: 2

Answer

You know the right answer?

Afootball is kicked into the air with a velocity of 32m/s at an angle of 25º. at the very top of the...

Questions

Engineering, 21.05.2020 01:57

What structure was created to help prevent shipwrecks?BuoysTug boatsLighthousesFog Horns...