For somebody 한마디 말론 전부
표현 못해 난 When I'm with you
온 종일 너만
생각이나 계속
Just wanna impress you
(Here's what I'm thinkin)

하루가 더 기대 돼
Yeah 공기마저 달콤해
너와 함께 있을 땐

정말 신기한 것 같아
네 손을 잡고 나면
You get me on my toes

I would go down for you
Cause I am so down for you
네 어떤 모습도
Yeah 아름다워
I might call it love
Girl you know that
I'm so down for you
I'm so down for you
I'm so down

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?