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q1 the earth's surface is affected by the sun in many ways. the diagram below shows the earth and sun's light rays during a certain time of the year. which of the following best describes what people are experiencing at location x on earth? a. the first days of summer b. the season with the longest days c. the first days of fall d. the coldest season of the year

q2 people often place ice into a warm liquid to make their drink colder. which statement best explains how ice makes a liquid colder?

a.
the ice pushes cool air into the liquid’s solid container.
b.
coldness flows from the colder ice into the warm liquid.
c.
heat flows from the warm liquid into the colder ice.
d.
the ice changes the chemical properties of the warm liquid.

Dalton’s model of an atom is the best described as a) a solar system b) a solid sphere c) a cloud d) a scoop of chocolate chip ice cream

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?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island