英文字典中文字典Word104.com



中文字典辭典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   


安裝中文字典英文字典辭典工具!

安裝中文字典英文字典辭典工具!








  • Speed of sound - Wikipedia
    At 0 °C (32 °F), the speed of sound in dry air (sea level 14 7 psi) is about 331 m s (1,086 ft s; 1,192 km h; 740 mph; 643 kn) [ 1 ] The speed of sound in an ideal gas depends only on its temperature and composition
  • Speed of Sound at Different Altitudes and Temperatures
    In air, at sea level under standard conditions of 15°C (59°F) and 101 325 kPa, the speed of sound is approximately 761 mph (1,225 km h or 661 knots) It’s crucial to understand that sound travels through different mediums at different speeds, e g , faster in water and even faster in solids
  • Speed of Sound Table Chart - Engineers Edge
    Speed of Sound table chart including Speed of Sound at a known temperature and density of air, Speed of Sound vs Density of Air
  • Speed of Sound vs. Elevation, Temperature and Air Pressure
    Attenuation of sound in seawater vs temperature and frequency The speed and attenuation of sound in moist air varies with sound frequency and air humidity An introduction to the nature of sound with frequencies, wave-lengths and octaves Calculate the speed of sound (the sonic velocity) in gases, fluids or solids
  • What Is the Speed of Sound | Mach 1 | Live Science
    On Earth, the speed of sound at sea level — assuming an air temperature of 59 degrees Fahrenheit (15 degrees Celsius) — is 761 2 mph (1,225 km h) Because gas molecules move more slowly
  • Speed of Sound - NASA
    If we consider the atmosphere on a standard day at sea level static conditions, the speed of sound is about 761 mph, or 1100 feet second We can use this knowledge to approximately determine how far away a lightning strike has occurred
  • What is the Speed of Sound? (with pictures) - AllTheScience
    The speed of sound varies depending on altitude, temperature and the medium through which it travels For example, at sea level in a standard atmosphere, at a temperature of 59-degrees Fahrenheit (15 Celsius), sound travels 761 miles per hour (1,225 km p h)
  • 17. 3: Speed of Sound - Physics LibreTexts
    For air at sea level, the speed of sound is given by \[v = 331\; m s \sqrt{1 + \frac{T_{C}}{273 °C}} = 331\; m s \sqrt{\frac{T_{K}}{273\; K}} \label{17 7}\] where the temperature in the first equation (denoted as T C ) is in degrees Celsius and the temperature in the second equation (denoted as T K ) is in kelvins


















中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典