A mass (M1 = 5.0 kg) is connected by a light cord to a mass (M2 = 4.0 kg) which slides on a smooth surface, as shown in the figure. The pulley (radius = 0.20 m) rotates about a frictionless axle. The acceleration of M2 is 3.5 m/s2. What is the rotational inertia of the pulley?
?
?
a.
0.29 kg?m2
b.
0.42 kg?m2
c.
0.20 kg?m2
d.
0.62 kg?m2
e.
0.60 kg?m2
c
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in an electric field. What is the magnitude of the electric field?
A. 
B. 
C. 14.9 N/C
D. 
E. there isn't enough information in the problem to solve this
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