*42. D A sound wave travels twice as far in neon (Ne) as it does in krypton (Kr) in the same time interval. Both neon and krypton can be treated as monatomic ideal gases. The atomic mass of neon is 20.2 u, and the atomic mass of krypton is 83.8 u. The temperature of the krypton is 293 K. What is the temperature of the neon?
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- At the peak temperature on a sunny but cold day, the speed of sound in air was measured to be about 316.m/s. What was the air temperature? Speed of Sound in Air Tx 273.15 v(in m/s) = 331 . where Tg is the temperature in Kelvin. Also recall Tc = Tg– 273.15 where Te is the temperature in Celsius. A. -25.18°C D. -27.43°C В. -29.4°C E. -26.62°C С. -24.2°C F. -28.44°C5. The distance between Planet X and a star is 1.2 x 101 m. At the surface of Planet X, the average intensity of the radiation from the star is 5355 W/m?. If the star radiates isotropically, which of the following is the average power of the star? A. 4.95 x 1028 W B. 5.47 x 1027 W C. 7.64 x 1024 W D. 9.69 x 1026 W DO0 F4 F7 F2 F3 &V Hint The heat transfer behavior of a sample of opaque fluid is being investigated. A series of ultrasound transducers send sound waves through various portions of the sample, and the time it takes for the sound wave to travel through the sample is measured at each location. From this information, researchers are able to reconstruct a rough temperature field of the sample. The false-color image of the sample is divided into three regions based on the measured sound wave transmission times. Region A has a sound wave transmission time of 35.4 ms, region B has a sound wave transmission time of 33.2 ms, and region C has a sound wave transmission time of 33.5 ms. Assuming a uniform sample thickness, rank regions A, B, and C based on their temperatures, from highest to lowest. Highest temperature Region C Region B about us privacy policy terms of use contact us help careers
- Part A A large cavity that has a very small hole and is maintained at a temperature T' is a good approximation to an ideal radiator or blackbody. Radiation can pass into or out of the cavity only through the hole. The cavity is a perfect absorber, since any radiation incident on the hole becomes trapped inside the cavity. Such a cavity at 500° has a hole with area 5.00 mm². How long does it take for the cavity to radiate 200 J of energy through the hole? Express your answer in seconds. ΜΕ ΑΣΦ t = Submit Request Answer ? STwo tubes of gas are identical and are open only at one end. One tube contains neon (Ne) and the other krypton (Kr). Both are monatomic gases, have the same temperature, and may be assumed to be ideal gases. The fundamental frequency of the tube containing neon is 475 Hz. What is the fundamental frequency of the tube containing krypton? The atomic masses are given by 20.180 u for neon, and 83.80 u for krypton. Number i UnitsA mass of 0.75 kg stretches a spring 0.05 m. The mass is in a medium that exerts a viscous resistance of 57 m N when the mass has a velocity of 6 The viscous resistance is proportional to the speed of the object. S Suppose the object is displaced an additional 0.07 m and released. m Find an function to express the object's displacement from the spring's natural position, in m after t seconds. Let positive displacements indicate a stretched spring, and use 9.8 as the acceleration due to s² gravity. u(t) = .07(e-6.33t) sin(1 -6.33t) sin 12.487t + K|2 X
- Don't use chat gptA. If you double the typical speed of molecules in a gas, by what factor will the pressure change? B. Give a reasonable and complete explanation for your answer based on the kinetic model of the moleculesA container of nitrogen molecules is at a temperature of37.0 C. a. What is the rms speed of the nitrogen molecules?b. What is the average rotational energy of a nitrogen molecule?
- You place your ear onto a steel railroad track and hear the sound of a distant train through the rails Δt = 2.7 seconds before you do through the air. The speed of sound in steel is vs = 6100 m/s, and and the air temperature is 36° C. Find the distance, D, to the train in meters.A. Discuss the significant modification of Debye's theory from Einstein's theory and Dulong & Petit's law for specific heat capacity of solids B. Find the theoretical Debye temperature of copper (Cu) if the speed of sound in copper is 3901 m/s and its density and atomic mass is 8960 kg/m³ and 0.06355 kg/mol, respectively.High-intensity focused ultrasound (HIFU) is one treatment for certain types of cancer. During the procedure, a narrow beam of high-intensity ultrasound is focused on the tumor, raising its temperature to nearly 90°C and killing it. A range of frequencies and intensities can be used, but in one treatment a beam of frequency 4.40 MHz produced an intensity of 1425.0 W/cm. The energy was delivered in short pulses for a total time of 3.40 s over an area measuring 1.80 mm by 5.40 mm. The speed of sound in the soft tissue was 1580 m/s, and the density of that tissue was 1509.0 kg/m?. What was the wavelength A of the ultrasound beam? = m How much energy Eotal Was delivered to the tissue during the 3.40 s treatment? J Etotal = terms of use contact us help about us privacy polícy careers Show All V VS T.jpeg Free-Fall-Phet.docx free fall.png V VS T.jpeg FII F10 F8 F7 000 * F5 F6 aロ