Question

In: Physics

1. An EM wave has a maximum electric field of 250 V / m. Determine the...

1. An EM wave has a maximum electric field of 250 V / m. Determine the average intensity of the wave.

a. 120 W/m^2

b. 0.66 W/m^2

c. 170 W/m^2

d. 83 W/m^2

e. 0.89 W/m^2

2. The various colors of visible light differ in:

a. frequency and wavelength

b. frequency and its speed in a vacuum

c. only in wavelength

d. only in frequency

e. its speed in a vacuum

3. Determine which of the following types of waves is intrinsically different from the other four.

a. visible light

b. sound waves

c. gamma rays

d. ultraviolet radiation

e. radio waves

Solutions

Expert Solution


Related Solutions

An electron is placed in a region with a 1010 V/m electric field directed in the...
An electron is placed in a region with a 1010 V/m electric field directed in the positive x-direction. The electron escapes this region after traveling 14.0 cm. What is the kinetic energy of the electron? What is the particle's velocity? Will a proton placed at the same initial position and traveling through a similar 14.0 cm path acquire the same amount of kinetic energy? Will the proton experience the same change in velocity? Why or why not? I have seen...
1. An electric field (in v/m) varies with postion along the y axis according to E...
1. An electric field (in v/m) varies with postion along the y axis according to E = 1/y. Find the electric potential difference VAB if A is a point on the y axis at y = 5 m and B is a point on the y axis at y = 7 ? VAB = 0.28 volts VAB = 0.34 volts VAB = 0.49 volts VAB = 0.82 volts 2. How does the electric potential at a point x, a finite...
Near the surface of the Earth there is an electric field of about 150 V/m which...
Near the surface of the Earth there is an electric field of about 150 V/m which points downward. Two identical balls with mass 0.407kg are dropped from a height of 2.29m , but one of the balls is positively charged with q1 = 338?C , and the second is negatively charged with q2=-338?C . Use conservation of energy to determine the difference in the speeds of the two balls when they hit the ground. (Neglect air resistance.)
The electric field of an electromagnetic wave that propagates in a vacuum is given by: ?⃗...
The electric field of an electromagnetic wave that propagates in a vacuum is given by: ?⃗ (?, ?) = 2 cos (α? - ω?) ? + 2 sin (α? - ω?) ?, ?? (?/?); ???? α ? ω ??? ?????????? a) What is the amplitude E0 of the electric field, its angular frequency, period, frequency f, wave number | ?⃗ |, wavelength, its speed u and its phase constant φ? b) I) Determine the electric field in the x-y plane...
At a certain location, electromagnetic wave 1 is measured to have an average electric field of...
At a certain location, electromagnetic wave 1 is measured to have an average electric field of Eav = 152 N/C, and electromagnetic wave 2 is measured to have an average magnetic field of Bav = 0.87 µT. a. (5 points) Calculate the average intensity of each wave. b. (5 points) If the electromagnetic waves are being measured 0.54 m from their light sources (assume that they are emitting light uniformly in all directions), what average power is each source emitting?...
A 600 Mrad/s EM wave travels through air and is polarized with the electrical field normal...
A 600 Mrad/s EM wave travels through air and is polarized with the electrical field normal with the plane of incidence. This wave impinges on the surface of a perfect conductor on plane z=0 at 50º and its electric field has an amplitude of 2V/m. Find the electrical field resulting from incident and reflected wave on frequency domain. Also, find the current density at the interface between air and the perfect conductor
Derive wave equations or the electric field and magnetic field in vacuum. (Refer to Griffiths "Introduction...
Derive wave equations or the electric field and magnetic field in vacuum. (Refer to Griffiths "Introduction to electrodynamics" Chapter 9.2.1)
A light wave with an electric field amplitude of 2E0 and a phase constant of zero...
A light wave with an electric field amplitude of 2E0 and a phase constant of zero is to be combined with one of the following waves: wave A has an amplitude of E0 and a phase constant of zero wave B has an amplitude of E0 and a phase constant of π wave C has an amplitude of 2E0 and a phase constant of zero wave D has an amplitude of 2E0 and a phase constant of π wave E...
Prove that Maxwell’s equations yield the wave equation for the electric field [HINT: ∇ × (∇×...
Prove that Maxwell’s equations yield the wave equation for the electric field [HINT: ∇ × (∇× ) = ∇(∇·) − ∇ · ∇]
Determine the magnitude and direction of the electric field at point 1 in the figure(Figure 1).
Figure 1 Part A Determine the magnitude and direction of the electric field at point 1 in the figure(Figure 1). E1→=(2500V/m,up) E1→=(7500V/m,up) E1→=(3750V/m,down) E1→=(2500V/m,down) Part B Determine the magnitude and direction of the electric field at point 2 in the figure. E2→=(2500V/m,up) E2→=(3750V/m,down) E2→=(7500V/m,down) E2→=(5000V/m,up)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT