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In winter, people play hockey on Alta Lake in Whistler. However, it is not considered safe to play hockey on ice until the ice is 20 cm thick. On a winter day with a temperature -10?C, it is observed that the lake has a 1cm thick layer of ice over the entire surface. Assuming the temperature stays constant, ?nd how long it will take for the ice to be safe:
(a) If the air temperature remains at -10?C, ?nd the rate in cm per hour at which ice is added to the layer. The thermal conductivity of ice is 2.18W/m·K.
(b) Find the time that the ice layer reaches a thickness of 20 cm.
Watch the video titled "Groundwater Contamination" (4 min 35 sec) under the Water Pollution terms section of the Science Corner. You can also view the video athttps://www.youtube.com/watch?v=5xs1jLlbztE. Next, explain the main reasons
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Determine how fast you would have to travel therefore that to you the distance would be only 38 light-years
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A harmonic wave travels in a wire with amplitude of 3.25 mm, wavelength 2.04 m, and frequency 636 Hz. What is the speed with which the wave travels
Initially, the translational rms speed of a molecule of an ideal gas is 460 m/s. The pressure and volume of this gas are kept constant, find the final translational rms speed of the molecules
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