Sam is walking through the park. he hears a police car coming down the street toward him. what happens to the sound of the siren as the police car approaches and then passes sam? sound waves from the siren remain constant. as the police car drives past sam, the sound waves decrease in frequency. the frequency of sound waves from the siren increase. as the police car continues past sam, the sound waves decrease in frequency. the frequency of sound waves from the siren decrease. as the police car drives past sam, the sound waves increase in frequency. the frequency of the sounds waves from the siren increase and continues to increase as the police car passes and drives away from sam.
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Physics, 22.06.2019 03:00
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
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Physics, 22.06.2019 13:40
What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th
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Physics, 22.06.2019 18:00
Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.
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Physics, 22.06.2019 23:00
1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?
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Sam is walking through the park. he hears a police car coming down the street toward him. what happe...
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