A square wire loop 10 cm on a side with resistance 10 mΩ has its plane perpendicular to a uniform magnetic field of magnitude B = 1 T. Two
opposite sides of the loop are shrinking at a constant rate of 4 cm/s, reducing the
area enclosed by the loop, as shown in Fig. 3. a/ Determine the average induced emf in the loop during the first second.
b/ Compute the average induced current in the loop during the first second.
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Which subatomic particle has a negative charge

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.