Starting outside the region with the magnetic field, a single square coil of wire enters, moves across, and then leaves the region with a uniform magnetic field

 perpendicular to the page so that the graph shown below represents the induced emf. The loop moves at constant velocity . As seen from above, a counterclockwise emf is regarded as positive. In which direction did the loop move over the plane of the page?







a.

The loop moved from bottom to top.



b.

The loop moved from top to bottom.



c.

The loop moved from left to right.



d.

The loop moved from right to left.



e.

All of these directions of motion will produce the graph of emf vs t.

---

e

Physics & Space Science

The figure shows a pV diagram of a gas for a complete cycle. During part bc of the cycle, 1190 J of heat flows into a system, and at the same time the system expands against a constant external pressure of 7.00 × 104 Pa as its volume increases from 0.0200 m3 to 0.0800 m3. Calculate the change in internal (thermal) energy of the system during part bc of the cycle. If the change is nonzero, be sure to indicate whether the change is positive or negative.

An electromagnetic wave with components Ey = Eo sin(kx - ?t) and Bz = Bo sin(kx - ?t) is a wave with a frequency of

A) k. B) ?/2?. C) k/?. D) ?. E) ?/?.

A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two-second time. The ball is referred to at the two-second time. The acceleration is __________

Fill in the blank(s) with correct word

When the midpoint of the face of the Sun appears to be on the horizon, where is the actual midpoint from the point of view of the observer?

a. above the horizon at sunrise and below the horizon at sunset b. on the horizon c. below the horizon d. above the horizon