Answer:
The temperature is ![T = 168.44 \ K](https://tex.z-dn.net/?f=T%20%20%3D%20168.44%20%5C%20K)
Explanation:
From the question ewe are told that
The rate of heat transferred is ![P = 13.1 \ W](https://tex.z-dn.net/?f=P%20%20%3D%2013.1%20%5C%20W)
The surface area is ![A = 1.55 \ m^2](https://tex.z-dn.net/?f=A%20%3D%201.55%20%5C%20m%5E2)
The emissivity of its surface is ![e = 0.287](https://tex.z-dn.net/?f=e%20%3D%200.287)
Generally, the rate of heat transfer is mathematically represented as
![H = A e \sigma T^{4}](https://tex.z-dn.net/?f=H%20%20%3D%20%20A%20e%20%5Csigma%20%20T%5E%7B4%7D)
=> ![T = \sqrt[4]{\frac{P}{e* \sigma } }](https://tex.z-dn.net/?f=T%20%20%3D%20%20%5Csqrt%5B4%5D%7B%5Cfrac%7BP%7D%7Be%2A%20%5Csigma%20%7D%20%7D)
where
is the Boltzmann constant with value ![\sigma = 5.67*10^{-8} \ W\cdot m^{-2} \cdot K^{-4}.](https://tex.z-dn.net/?f=%5Csigma%20%20%3D%205.67%2A10%5E%7B-8%7D%20%5C%20W%5Ccdot%20%20m%5E%7B-2%7D%20%5Ccdot%20%20K%5E%7B-4%7D.)
substituting value
![T = \sqrt[4]{\frac{13.1}{ 0.287* 5.67 *10^{-8} } }](https://tex.z-dn.net/?f=T%20%20%3D%20%20%5Csqrt%5B4%5D%7B%5Cfrac%7B13.1%7D%7B%200.287%2A%205.67%20%2A10%5E%7B-8%7D%20%7D%20%7D)
![T = 168.44 \ K](https://tex.z-dn.net/?f=T%20%20%3D%20168.44%20%5C%20K)
<span>The answer would be convection currents. Convection happens when atoms with a lot of heat energy in a liquid or gas transfer and get the room of particles with fewer heat energy. Heat energy is transported from hot places to cooler places by convection.</span>
Answer: a boy jumping down
The instrument that measures wind is called anemometer. Anemometer not only measures wind, but also, this measures the direction of the wind. And anemometer is also a common device used in a station weather. It is dervived from the greek work anemos which means wind.
Answer:
The displacement is zero miles
Explanation:
The displacement of an object that moves from point A to point B is defined as
![d =B-A](https://tex.z-dn.net/?f=d%20%3DB-A)
Where d is the displacement of the object. The displacement does not depend on the trajectory of the object. It only depends on the linear distance between the end point and the starting point.
In this case we know that the person walks from home to work and then walks from work to home. Therefore, the total displacement is the linear distance between the point where its journey begins and the point where the route ends.
The tour begins on the front porch of your house and ends on the front porch of your house (when you return from work). If we call A to the front porch of the house then the displacement is:
![d = A-A = 0](https://tex.z-dn.net/?f=d%20%3D%20A-A%20%3D%200)
The displacement is zero miles, since the person finishes the journey just where it started (front porch)