Physics, 19.09.2019 06:30 ahmetagayew2004

Aspeeder is pulling directly away and increasing his distance from a police car that is moving at 24 m/s with respect to the ground. the radar gun in the police car emits an electromagnetic wave with a frequency of6.7 × 10 9 hz. the wave reflects from the speeder’s car and returns to the police car, where its frequency is measured to be 370 hz less than the emitted frequency. find the speeder’s speed with respect to the ground.

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 17:50

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

Answers: 3

Answer

Physics, 21.06.2019 22:30

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Answers: 1

Answer

Physics, 22.06.2019 05:20

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Answers: 3

Answer

Physics, 22.06.2019 06:30

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Answers: 3

Answer

You know the right answer?

Aspeeder is pulling directly away and increasing his distance from a police car that is moving at 24...

Questions