Answer:
X= -Y + 2/2 Y=-X + 3/2
Explanation:
I don't know how to simplify it anymore. You would get x=-y+3/2 and y=-x+3/2
Explanation:
ᗯᕼᗩT ᑕOᑎᑕᗴᑭT ᗩᖇᗴ ᑌ TᗩᑭKIᑎᘜ ᗩᗷOᑌT......
Explanation:
The given data is as follows.
, 
Area of the flat plate is 2 × 4 = 8 
.
Average convection heat transfer coefficient 
= 
= 
.
Hence, formula to calculate heat transfer through convection from air to the water is given as follows.
q = 
= ![60 W/m^{2} ^{o}C} \times 8 m^{2} \times [(80 - 30)]^{o}C](https://tex.z-dn.net/?f=60%20W%2Fm%5E%7B2%7D%20%5E%7Bo%7DC%7D%20%5Ctimes%208%20m%5E%7B2%7D%20%5Ctimes%20%5B%2880%20-%2030%29%5D%5E%7Bo%7DC)
= 24000 W
or, = 24 kW
Hence, the direction of heat flow is from air to the surface.
Thus, we can conclude that transfer of heat is 24 kW.
Answer:
a. release of heat flames or light - Physical Change
b. formation of precipitate - Chemical Change
c. change in substances size - Physical Change
d. change in an objects shape - Physical Change
e. change in an objects phase of matter - Physical Change
f. releasing gases/bubbles - Chemical Change
Explanation:
These are all either changes in physicality or in chemical structures; hope I helped either way!
Answer:
<u><em>Pangaea</em></u>
<u><em>Alfred Wegner</em></u>
<u><em>plate tectonics</em></u>
Explanation:
What did Earth look like 250 million years ago? The continents of Earth were clustered together in formation that a scientist named<em> </em><u>Pangaea</u><u><em>.</em></u>The scientist that named "Pangaea" was a German scientist by the name of <u>Alfred Wegner.</u> He theorized that "Pangaea" split apart and the different landmasses, or continents, drifted to their current locations on the globe. Wegener's theories of plate movement became the basis for the development of the theory of <u>plate tectonics.</u>
