Author Question: If you place a plane mirror vertically into water, and a dolphin moves toward it with a speed of 4 ... (Read 39 times)

lindiwe · **on:** Jul 27, 2018

If you place a plane mirror vertically into water, and a dolphin moves toward it with a speed of 4 m/s, she will see her image move toward her at a relative speed of

A) 6. m/s.
B) 10. m/s.
C) 2. m/s.
D) 4. m/s.
E) 8. m/s.

Question 2

The coil of a generator has 50 loops and a cross-sectional area of 0.25 m2. What is the maximum emf generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

A) 100. V
B) 50. V
C) 400. V
D) 75. V
E) 0. V