48. 103. 2
104. 4 M=FxI F = mg (9 kg x 10 m/s2 = 90
N)
M = 90 N x 0.6 m
= 54 Nm
105. 3 W = FxS
= 50 N x 1 m
= 50 Nm
106. 4
107. 3 =
= (1,000 kg) (
= 50,000 J
108. 4
W = E 2 – E1
109. 4
48
49. 110. 2 W = Pt
= 0.08 kw x 20 hr
= 1.6 Unit
111. 4 V = IR
= (30 mA)(12 k )
= 360 V
112. 3
113. 4
114. 1 1 0
1,000 0.5%
= 10 x 1,000 ± 0.5%
= 10,000 ± 0.5%
= 10 k
115. 3
116. 2
117. 1
49