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  2. Comparison of North American ski resorts - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_North...

    The Summit at Snoqualmie: North Bend: Washington: 5,420 2,610 2,280 1,914 62 27 435 ... December 10, 2019 [409] Snow Ridge Ski Resort: Turin: New York: 2,000 1,350 ...

  3. Snohomish County, Washington - Wikipedia

    en.wikipedia.org/wiki/Snohomish_County,_Washington

    Snohomish County (/ snoʊˈhoʊmɪʃ /) is a county located in the U.S. state of Washington. With a population of 827,957 as of the 2020 census, [1] it is the third-most populous county in Washington, after nearby King and Pierce counties, and the 72nd-most populous in the United States. The county seat and largest city is Everett.

  4. Ice–albedo feedback - Wikipedia

    en.wikipedia.org/wiki/Ice–albedo_feedback

    Ice–albedo feedback is a climate change feedback, where a change in the area of ice caps, glaciers, and sea ice alters the albedo and surface temperature of a planet. Because ice is very reflective, it reflects far more solar energy back to space than open water or any other land cover. [1] It occurs on Earth, and can also occur on exoplanets ...

  5. Snow - Wikipedia

    en.wikipedia.org/wiki/Snow

    A 2007 estimate of snow cover over the Northern Hemisphere suggested that, on average, snow cover ranges from a minimum extent of 2 million square kilometres (0.77 × 10 ^ 6 sq mi) each August to a maximum extent of 45 million square kilometres (17 × 10 ^ 6 sq mi) each January or nearly half of the land surface in that hemisphere.

  6. Ten percent plan - Wikipedia

    en.wikipedia.org/wiki/Ten_percent_plan

    The ten percent plan, formally the Proclamation of Amnesty and Reconstruction (13 Stat. 737), was a United States presidential proclamation issued on December 8, 1863, by United States President Abraham Lincoln, during the American Civil War. By this point in the war (nearly three years in), the Union Army had pushed the Confederate Army out of ...

  7. Peristaltic pump - Wikipedia

    en.wikipedia.org/wiki/Peristaltic_pump

    A 1 to 2 inch sample of the tubing is immersed in the fluid to be pumped for anywhere from 24 to 48 hours, and the amount of weight change from before and after the immersion is measured. If the weight change is greater than 10% of the initial weight, then that tube is not compatible with the fluid, and should not be used in that application.

  8. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-codes, especially "10-4" (meaning "understood") first reached public recognition in the mid- to late-1950s through the popular television series Highway Patrol, with Broderick Crawford. [ citation needed ] Crawford would reach into his patrol car to use the microphone to answer a call and precede his response with "10-4".

  9. Speed of sound - Wikipedia

    en.wikipedia.org/wiki/Speed_of_sound

    The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s.