What is the rms electric field

Reference no: EM13660048

At a distance of 25m from an isotropic 100 MHz radio source the intensity is 120W/m2.

1. What is the rms electric field at 25m?

2. Over a 2 hour period, what is the momentum given to a 4cm x 4cm surface (at the 25m distance) perpendicular to the source that reflects 3/4 of the energy?

Reference no: EM13660048

Questions Cloud

One-dimensional infinite potential well of width : Seven electrons are trapped in a one-dimensional infinite potential well of width L. What multiple of h2/8mL2 gives the energy of (a) the first excited state, (b) the second excited state, and(c) the third excited state of the system? Suppose that th..

Two identical sinusoidal waves by wavelengths : Two identical sinusoidal waves by wavelengths of 2.00 m travel in the same direction at a speed of 1.50 m/s. The second wave originates from the similar point as the first, however at a later time. The amplitude of the resultant wave is the similar a..

Energy was added to accomplish the transformation : A 65 g ice cube at 0°C is heated until 60 g has become water at 100°C and 5.0 g has become steam at 100°C. How much energy was added to accomplish the transformation?

Max angle string makes by vertical as pendulum swings : A pendulum is made by letting a 3 kg object swing at the end of a string that has a length of 2.0m. The max angle the string makes by vertical as the pendulum swings is 30degrees. What is the speed of the object when it’s at 15degrees?

What is the rms electric field : At a distance of 25m from an isotropic 100 MHz radio source the intensity is 120W/m2. What is the rms electric field at 25m? Over a 2 hour period, what is the momentum given to a 4cm x 4cm surface (at the 25m distance) perpendicular to the source tha..

Two point like identical positive charges : Two point like identical positive charges, all of mass .3 g are suspended as a pendulum and placed in the uniform electric field of a magnitude E=5*10^5 N/C directed upward. A length of a string is 30 cm. What is the magnitude of all charge?

What are the wave speed and fundamental frequency : Standing waves on a 1.0m long string that is fixed at both ends are seen at successive frequencies of 24 Hz and 63 Hz. What are the wave speed and fundamental frequency?

What is the electric field amplitude of the transmitted beam : A beam of unpolarized light of intensity26.0 W/m2 passes during a polarizing sheet. What is the electric field amplitude of the transmitted beam?

Electric potential of very large isolated flat metal plate : The electric potential of a very large isolated flat metal plate isV0. It carries a uniform distribution of charge of surface density σ (C/m2), or σ/2 on each surface. Decide V at a distance x from the plate. Think about point x to be far from teh ed..

User Account

All Pages