Physics, 23.04.2020 04:14 inesperezferrere
A 10-kg kid comes down a slide. The slide is 3 meters high and 5 meters long. The slide also has a frictional force of 10 N that acts along the entire length of the slide. How fast is the kid going when he reaches the bottom? HINT 1: What is the total amount of energy that the kid has at the top and should have at the bottom? HINT 2: By how much does friction change that energy? HINT 3: What type of energy does the kid have at the bottom vs. the top?
Answers: 1
Physics, 22.06.2019 05:00, anondriap
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
Physics, 22.06.2019 06:20, jonmorton159
Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?
Answers: 1
Physics, 22.06.2019 07:30, jaquezdaking4919
The slope of a velocity time graph over any interval of time gives the during that interval
Answers: 2
A 10-kg kid comes down a slide. The slide is 3 meters high and 5 meters long. The slide also has a f...
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