" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a = v / t --> L / T²
F= m.a ---> M L /T²
A = p.l --> L²
P = F/ A
= ML /T² /L²
= M/ T²L
=
2. D
3. Tx = atas - bawah
= 120 - 0
= 120
Ty = atas - bawah
= 170 - 20
= 150
Tx : Ty = 120 : 150
= 4 : 5
Tx = 60 -->
Ty = (Tx-tbx) . 5/4 + Tby
= (60-0) . 5/4 + 20
= 75+20
= 95
4. Azas Black
Q terima = Q lepas
mb. cb. (120-Tc) = ma.ca.(Tc-20)
500. 460 (120-Tc) = 200. 4200 (Tc-20)
23 (120-Tc) = 84 (Tc-20)
2760-23Tc = 84Tc - 1680
2760+1680 = 84Tc+23Tc
107Tc = 4440
Tc = 41,5
5. Q = Q1 + Q2 + Q3
= m.ces. (0-(-10)) + m.KL + m. cair.(20-0)
= 0,08. 2100.10 + 0,08.336000 + 0,08. 4200. 20
= 1680 + 26880 + 6720
= 35.280 J
6. ΣF = m.a
25-10 = 5 a
15 = 5a ---> a = 3
Vt = Vo + at
= 0 + 3.4
= 12 m/s