Log In Start studying!
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q 44

Expert-verified
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1115

Answers without the blur.

Just sign up for free and you're in.

Illustration

Short Answer

A 75 kW radio transmitter emits 550 kHz radio waves uniformly in all directions. At what rate do photons strike a 1.5-m-tall, 3.0-mm-diameter antenna that is 15 km away?

The rate with which the photons strike the antenna is .

See the step by step solution

Step by Step Solution

Step 1. Given information is :Power is uniformly distributed in sphere of radius r = 15 kmLength of Antenna, l = 1.5 mDiameter of Antenna, d = 3.0 mmPower = 75 kWFrequency = 550 kHz

We need to find out the rate with which the photons strike the antenna.

Step 2. Using the expression for fraction of total power that strikes the Antenna.

Most popular questions for Physics Textbooks

Icon

Want to see more solutions like these?

Sign up for free to discover our expert answers
Get Started - It’s free

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.