explain-why-it-is-easy-to-get-dehydrated-when-you-are-exercising-at-a-temperature-of-0circ-mathrmc-2

Name: explain why it is easy to get dehydrated when you are exercising at a temperature of 0circ mathrmc 2
Uploaded: 2020-10-16
Duration: 1 min 53 s
Channel: Numerade
Description: Explain why it is easy to get dehydrated when you are exercising at a temperature of $0^{\circ} \mathrm{C}$ and a relative humidity of 20$\% .$

Question

Explain why it is easy to get dehydrated when you are exercising at a temperature of $0^{\circ} \mathrm{C}$ and a relative humidity of 20$\% .$

David Collins · Accepted Answer

question Number nine asks about dehydration and colder temperatures and lower percent relative humidities to see if there&#x27;s a connection between the two. It asks you to explain why it is easy to get dehydrated when you are exercising at zero degrees Celsius and a relative humidity of 20%. I&#x27;m not convinced that you can easily get dehydrated when you&#x27;re exercising at zero degrees Celsius, because you&#x27;re probably not sweating very much. And I think dehydration is mostly due to sweating and not due to the fact that you are breathing in, ah, higher humidity air, although it does come into play a little bit. So building upon this idea that dehydration is not occurring due to sweating and that when you exhale, you breathe out water. You need to replenish that when you inhale, and if there is less water vapor in the air, then just due to breathing, you&#x27;re going to dehydrate mawr quickly, not from sweating because you&#x27;re exhaling more water vapor than you are inhaling the relative humidity. I&#x27;m sorry, the at a relative humidity of 20% and zero degrees Celsius. The amount of water vapor in the air is very, very small. We&#x27;re looking at about maybe 00.1 moles of water per 1000 leaders. So taking this into account just due to breathing than you could dehydrate more quickly.

Amy Jiang · Answer

So the water is in more concentrated solution than food in our body, which helps when? Ah, so when we drink it, um, it draws out water from our surrounding tissues causing dehydration.

Dennis Howard · Answer

this question asks us to explain why people sweat excessively when exercising outside on a hot day. Well, the process of sweating it is a process of thermo regulation where we&#x27;re maintaining home your spaces. So we are maintaining a core body temperature while putting it through extreme temperature conditions. So basically, on a hot day we&#x27;re exercising, generating a lot of heat, so we have to be able to regulate that temperature, and we don&#x27;t have a thermostat to do that. But instead we have, ah, home use static mechanism known as sweat. So what sweating is able to do is it is going to use the moisture from the sweat produced by sweat glands to cool the body when it becomes too warm. So as the body temperature risers, sweat is produced in order to decrease that body temperature. So basically, this will. If we&#x27;re trying to look at the underlying processes, this will be caused by the dermal blood vessels dilating and thus allowing for those sweat glands to secrete more sweat. So in here there will be by temporize is blood vessels of the Durmus Dia wait, thereby increasing sweat production, which leads to a decrease in body temperature and specifically if we&#x27;re looking at the process right here, so it is produced. But it will be the evaporation that leads to a decrease in body temperature. So this outlines how sweating is able to cool one off on a hot day when undergoing strenuous exercise.

Jonathan Everett · Answer

hello and welcome to digital tea with mystery where we will see what&#x27;s brewing in the world of physics. Um, solutions. So in this problem, we&#x27;re considering a water canteen. So I have that drawn with some some water and and the water is cool. Eso it&#x27;s good for, like taking on the hike or whatever. And the canteens gonna be surrounded by dry air. And the question is kind of like, how can we keep the water in the, um, leather canteen? Uh, cooler longer in the day? Because if you&#x27;re out on a hike and stuff, then you&#x27;ve been hiking for a few hours. You don&#x27;t want to open up that canteen and drink like 80 F water. He&#x27;d probably prefer closer to the 30 of the 40 degree range of where you put it into the, uh, canteen in mourning. So one way you can do this is you could actually wet the exterior of the canteen, So if it&#x27;s made out of leather and it&#x27;s absorbent, it&#x27;ll hold some some water on the exterior edge. Now, if the air is dry, then the ah heat flow is going to go from the air into this water that&#x27;s in 11. And it&#x27;s going to increase the energy level of the water so that it ends up evaporating and when it evaporates Ah, the heat transfer is between the water on the exterior, the canteen and the air. And heat transfer is not dealing with water in the inside. This helps our water temperature on the inside inside remained constant until all the evaporation ah is completed. So if you put water on the outside of your can&#x27;t canteen, uh, the water company inside will remain constant until the evaporation process completes. Once the evaporation process is complete, then the watering inside will start absorbing heat from the exterior. That&#x27;s the same exact concept. Um, kind of like when you get out of the pool and you&#x27;re wet and you&#x27;re walking around, you don&#x27;t feel hot at all until the water evaporates off your skin. Because all the e transfers going on with water. And you, in fact, you might even feel cool for a while. Um, as he energy is removed from you. Same sort of, uh uh concept in this case. Hey, thanks for learning with me. I have certainly enjoyed learning with you.

Marissa Turner · Answer

this this question 16 from chapter 12 and it&#x27;s asking, how does sweat Court on the body Okay, so we all know my temperature goes up or something else happens. Maybe a health condition or body temperature goes up. When that happens, our body overheat. So when our body over Keith, this class is less this work, I can&#x27;t and body this wet his body when he covered in the liquid water and therefore water it&#x27;s going Take me exasperated. Plan it towards it needs from our bodies and this move us around.

Susan Hallstrom · Answer

Okay, This question asks why cold, damp air and hot human air feels more yucky. Tow us yuck and double Yuck! In orderto answer this question, we&#x27;re going to send. Consider the specific heats of water vapor. The specific heat of water vapor is 1.9 J over GC degrees, and the specific heat of air is 1.0 J over GC degrees, so you can see that the specific heat of water is substantially higher than the specific heat of air. Okay, so if it&#x27;s cold out and your body our body comes in contact with cold, damp air, that damp air that cold air is going to extract the heat from your body, your heat is leaving. Makes you feel even colder. Um, conversely, on a hot, humid day, so I&#x27;ve got that hot. It&#x27;s super hot out that water vapor is going to be pushing it, pushing that heat into you, or your body body will be absorbing that heat because of its by high specific heat, it will be coming into your body. Okay, thanks,

Problem

Do you feel cooler at 100$\%$ humidity at $30^{\c…

Problem 9 Easy Difficulty

Explain why it is easy to get dehydrated when you are exercising at a temperature of $0^{\circ} \mathrm{C}$ and a relative humidity of 20$\% .$

Answer

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