A highway patrolman sends a 23.150 GHz radar beam toward a speeding car. The reflected wave is lower in frequency by 4.04kHz.

What is the speed of the car? [Hint: For small values of, the following approximation may be used: (1+x)² = 1+2x.]

answer

watching

102

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

tutor123Lv1

2 Jun 2021

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

Highway design is strongly influenced by physical analyses, asapparent in construction of safe circular turns at common highwayspeeds. The following analyses represent common highway designconcerns.

What is the influence of friction on banked highway turns? Toaddress this question, first consider a car that encounters acircular highway curve of radius 256m banked toward the turncenter. At what speed v0 can this car safely negotiate the turnwithout friction for a uniform 6.72Âº banking angle? Under whatreal-world situation(s) might this circumstance occur? Toillustrate the effect of friction upon the vehicle, reanalyze theprevious situation in the presence of frictional coefficient 0.751,and determine the maximum speed vmax the car may safely negotiatethe turn. Should this coefficient be for static or kineticfriction? By what proportion did the safe turn speed increase inthe presence of friction?

What is the influence of friction on banked highway turns? To address this question, first consider a car that encounters a circular highway curve of radius 256m banked toward the turn center. At what speed v0 can this car safely negotiate the turn without friction for a uniform 6.72º banking angle? Under what real-world situation(s) might this circumstance occur? To illustrate the effect of friction upon the vehicle, reanalyze the previous situation in the presence of frictional coefficient 0.751, and determine the maximum speed vmax the car may safely negotiate the turn. Should this coefficient be for static or kinetic friction? By what proportion did the safe turn speed increase in the presence of friction?

Review. A microwave oven is powered by a magnetron, an electronic device that generates electromagnetic waves of frequency 2.45 GHz. The microwaves enter the oven and arc reflected by the walls. The standing wave pattern is produced in the oven can cook food unevenly, with hot spots in the food at antinodes and cool spots and nodes, so a turntable is often used to rotate the food and distribute the energy. If a microwave oven intended for use with a turntable is instead used with a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as carrot strips or cheese. The separation distance between the burns is measured to be %. From these data, calculate the speed of the microwaves.