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Explain why sound seems higher pitched when heard under water than in air? Show transcribed image...
12.3 (a) In which of these scenarios do you hear a higher pitched sound? Explain speed vo you at speed vo (i) A train with its horn sounding is stationary and you move directly towards it with a (ii) You stationary and the same train is sounding its horn as it moves directly towards (b) What is the difference in pitch between the above two scenarios if vo-30 m/s, the frequency of the train horn is 800 Hz and the...
why is the air at higher altitudes cooler than that at lower altitudes
Does 1,3 - dimethylcyclohexane have a higher or lower vapor pressure than water? Please explain why and what factor size has on this situation. I will vote thumbs up for a quick and detailed response. Thanks (: Also, if you could explan why dimethylcyclohexane is not soluble in water, that would be much appreciated!
Why does octanol has higher bouling point than water? I belive that water can form 4 H bonds and more polar than octanol. So I expected to see higher boiling point for water. But actually, octanol has higher boiling point than water. Does it imply that octanol has stringer intermolecular force? If so, could anyone explain why?
8. a. Explain why the melting point of pure phthalic acid is higher than that of pure napthalene, when the two compounds have nearly the same molecular weight. b. Explain why the melting point of pure hexane is hgiher than that of pure cyclo-hexane, when the two compounds have nearly the same molecular weight. (Hint: reffer to structures)
please solve c 2. Explain what is meant by diffraction of waves and describe two examples of when wave diffraction is useful. [3 a. b. A loudspeaker is circular in shape with a diameter of 0.15m. Using the principle of diffraction from a circular aperture, calculate the angle at which the first minimum occurs when; i. sound of frequency 3400 Hz is emitted li. sound of frequency 10 KHz is emitted Take the speed of sound in air to be...
A sound wave a frequency of 20 kHz emerges through a circular opening that has a diameter of 0.78 m. Concepts: The diffraction angle for a wave emerging through a circular opening is given by sin(theta) = 1.22 /D, where is the wavelength of the sound and D is the diameter of the opening. What is meant by the diffraction angle? the angle that the sound wave bends away from the center before passing through the opening the location of...
Why does Water have a higher viscosity than octane? Please show diagrams and detailed response. Im very confused. Thank you!
Why do scuba divers need to exhale air when they ascend to the surface of the water? Why does a sealed bag of chips expand when you take it to a higher altitude? The in a cylinder with a piston has a volume of 220 mL and a pressure of 650 mmHg. a. To obtain a higher pressure inside the cylinder at constant temperature and amount of gas, would the cylinder change as shown in A or B? Explain your...
Why would photosynthetic rates of beech grown under shelterwood be higher than those of oak grown under patch harvest?