Homework Answers
the speed of sound wave is,
v =331sqrt[T/273]
= 331*sqrt[290/273]
= 341.15 m/s
= 341 m/s (approximately)
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In the lab the temperature is usually around 290 K. Based on the lab write-up would...
If a 5.00 L container holds 1.56 mol of Ar at a temperature of 290 K,...
If
a 5.00 L container holds 1.56 mol of Ar at a temperature of 290 K,
what pressure of Ar gas would you expect?
If a 5.00 L container hold 1.56 mol of Ar at a temperature of 290 K, what pressure of Ar gas would you expect?
the measured speed of sound from longer pipe is 1006.1 +/- 80 m/s Q6. (1) Using the measured speed of sound from longer pipe, estimate the temperature of the lab room, with uncertainty. The speed of...
the measured speed of sound from longer pipe is 1006.1 +/- 80
m/s
Q6. (1) Using the measured speed of sound from longer pipe, estimate the temperature of the lab room, with uncertainty. The speed of sound is given by v 331 +0.6T (m/s), where T is the temperature in degrees Celsius. Does this find the lab room to be significantly warmer or colder than room temperature (say, 20+20C)? Justify using your uncertainties. Also, does this result make sense? Does...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of 507.4 K. Determine the power (kW) for the compressor if the inlet volumetric flow rate is 0.139 m/s and the heat transfer through the shell of the compressor to the surroundings is 1.31 kW. Use the ideal gas tables (variable specific heats).
1. The frequency of a sound wave was measured to be 331 Hz. If you know...
1. The frequency of a sound wave was measured to be 331 Hz. If you know that the speed of sound in air was 343 m/s, then determine the wavelength of the sound wave. 2. The wavelength of a sound wave was measured to be 1.47 m. If you know that the speed of sound in air was 343 m/s, then determine the frequency of the sound wave. 3. If the wavelength and frequency of a sound wave was measured...
uestion 4 (1 point) The temperature dependence of the speed of sound is described by the...
uestion 4 (1 point) The temperature dependence of the speed of sound is described by the equation v≈(331+0.6T/∘C)m/sv≈(331+0.6T/∘C)m/s {"version":"1.1","math":"v\approx (331 + 0.6 \,T /\, ^\circ\mathrm{C})\:\mathrm{m/s}"} Since the lab may not be exactly at 20 °C, the value for the speed of sound that you will measure may be different from 343 m/s. Assuming that the temperature in the lab is somewhere between 10 °C and 30 °C, the measured speeds of sound should be in the range Question 4 options:...
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10...
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach = 1). If the area ratio of the nozzle (A, /A2) is 5, what is: The velocity of the nozzle outlet, in [m/s], if the specific heat...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach 1. If the area ratio of the nozzle (A1/A2) is 5, what is: a. The velocity of the nozzle outlet, in [m/s], if the specific heat...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature change upon the addition of the hot solid object be larger or smaller than the temperature change you observed? Explain. 2. Your instructor handed you a 1-L sample of a liquid and asked you to determine its specific heat. How would you determine the specific heat of the liquid using the equipment in this lab? 3. What effect would not covering the calorimeter cup...
The temperature and pressure around the surface of a star are 9.01 x 106 K and...
The temperature and pressure around the surface of a star are 9.01 x 106 K and 0.0593 Pa. Calculate the rms speed of free electrons (mass = 9.11 x 10-31 kg) there, assuming they are an ideal gas.
On a hot summer day, the temperature of air in Arizona reaches 102°F. What is the...
On a hot summer day, the temperature of air in Arizona reaches 102°F. What is the speed of sound in air at this temperature? (The speed of sound at 0°C is 331 m/s. Use the conversion 0°C = 273 K as necessary.) m/s
If
a 5.00 L container holds 1.56 mol of Ar at a temperature of 290 K,
what pressure of Ar gas would you expect?
If a 5.00 L container hold 1.56 mol of Ar at a temperature of 290 K, what pressure of Ar gas would you expect?
the measured speed of sound from longer pipe is 1006.1 +/- 80
m/s
Q6. (1) Using the measured speed of sound from longer pipe, estimate the temperature of the lab room, with uncertainty. The speed of sound is given by v 331 +0.6T (m/s), where T is the temperature in degrees Celsius. Does this find the lab room to be significantly warmer or colder than room temperature (say, 20+20C)? Justify using your uncertainties. Also, does this result make sense? Does...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of 507.4 K. Determine the power (kW) for the compressor if the inlet volumetric flow rate is 0.139 m/s and the heat transfer through the shell of the compressor to the surroundings is 1.31 kW. Use the ideal gas tables (variable specific heats).
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach = 1). If the area ratio of the nozzle (A, /A2) is 5, what is: The velocity of the nozzle outlet, in [m/s], if the specific heat...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach 1. If the area ratio of the nozzle (A1/A2) is 5, what is: a. The velocity of the nozzle outlet, in [m/s], if the specific heat...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature change upon the addition of the hot solid object be larger or smaller than the temperature change you observed? Explain. 2. Your instructor handed you a 1-L sample of a liquid and asked you to determine its specific heat. How would you determine the specific heat of the liquid using the equipment in this lab? 3. What effect would not covering the calorimeter cup...
The temperature and pressure around the surface of a star are 9.01 x 106 K and 0.0593 Pa. Calculate the rms speed of free electrons (mass = 9.11 x 10-31 kg) there, assuming they are an ideal gas.
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