How various beats per second are heard

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Reference no: EM135098

Q1. When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard?

Q2. The radar system at an airport broadcasts 11 microwaves with 150 of power. An approaching airplane with a 33 cross section is 36 away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all directions. What is electric field strength of the microwave signal received back at the airport 240 later?

Reference no: EM135098

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