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maw [93]
2 years ago
14

what will be the final temperature is 0.05kg water at 0 degree centigrade is added to 0.25kg pf water at 90 degree centigrade sp

ecific heat capacity of water is 4200J/kgk​
Physics
1 answer:
scoray [572]2 years ago
7 0

Q in = Q out

0.25 x 4200 x (90-t)=0.05 x 4200 x (t-0)

1050 (90-t)=210t

94500-1050t=210t

94500=1260t

t=75°

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An electron in the n = 5 level of an h atom emits a photon of wavelength 1282.17 nm. to what energy level does the electron move
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This is an interesting (read tricky!) variation of Rydberg Eqn calculation.
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all values are given and putting these value we get

t=1642.83 secs

which is equal to

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