To understand the formula representing a traveling electromagnetic wave.

light, radiant heat (infrared radiation), x rays, and radio waves are all examples of traveling electromagnetic waves. electromagnetic waves comprise combinations of electric and magnetic fields that are mutually compatible in the sense that the changes in one generate the other.

the simplest form of a traveling electromagnetic wave is a plane wave. for a wave traveling in the x direction whose electric field is in the y direction, the electric and magnetic fields are given by

e⃗ =e0sin(kx−ωt)j^,

b⃗ =b0sin(kx−ωt)k^.

this wave is linearly polarized in the y direction.

part f

what is the wavelength λ of the wave described in the problem introduction?

express the wavelength in terms of the other given variables and constants like π.

part g

what is the period t of the wave described in the problem introduction?

express the period of this wave in terms of ω and any constants.

part h

what is the velocity v of the wave described in the problem introduction?

express the velocity in terms of quantities given in the introduction (such as ω and k) and any useful constants.

Aplane flies a distance d from west to east at a constant speed vp , with respect to the air in a time twe . on the return trip, the plane flies a distance d from east to west at a constant speed vp , with respect to the air in a time tew . on both trips the wind blows from west to east at a constant speed va , with respect to the ground 1) what is tew in terms of vp, va, and d, as needed? tew=dvp tew=dvp+va tew=dva tew=dvpâ’va tew=12dvp tew=12dvp+va tew=12dvpâ’va your submissions: b submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 2) what is twe in terms of vp, va, and d, as needed? twe=dvp twe=dvp+va twe=dva twe=dvpâ’va twe=12dvp twe=12dvp+va twe=12dvpâ’va your submissions: d submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 3) assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is va, the speed of the wind with respect to the ground? va = 100 miles/hr va = 575 miles/hr va = 200 miles/hr va = 175 miles/hr va = 975 miles/hr 4) once again, assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is tew, the time it takes the plane to fly a distance d miles from east to west? tew = 5.75 hours tew = 11.5 hours tew = 7.67 hours tew = 8 hours tew = 10.2 hours

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?