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.
Can you help me with that! Thank you very much! I really don't get this exercise.

What is the magnification of a real image if the image is 10.0 cm from a mirror and the object is 50.0 cm from the mirror ? use the equation m=-di/do. a. -5.0 b. 5.0 c. 0.20 d. -0.20

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.