An ac generator contains 80 flat rectangular loops of wire, each of which is 12 cm long and 8 cm wide. The loops rotate at 1200 rpm about an axis through the center and parallel to the long side

If the magnetic field in which the loop rotates is uniform, has magnitude 0.30 T, and is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator?
A) 20 V B) 27 V C) 35 V D) 29 V


D

Physics & Space Science

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A uniform rod is 3.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest at an angle of 27° above the horizontal. What is the angular speed of the rod as it passes through the horizontal position?

a. 3.0 rad/s b. 2.8 rad/s c. 2.1 rad/s d. 2.5 rad/s e. 3.4 rad/s

Physics & Space Science

A coil lies flat on a tabletop in a region where the magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

A) There is no induced current in this coil. B) The induced current flows clockwise. C) The induced current flows counterclockwise. D) The current flows clockwise initially, and then it flows counterclockwise before stopping.

Physics & Space Science

The blueness of the sky results from ______________

Fill in the blank(s) with correct word

Physics & Space Science

A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together

(a) What is the speed of the wreckage just after the collision? (b) In what direction does the wreckage move just after the collision?

Physics & Space Science