Astudent wants to vary the force of repulsion between two magnets. which method could the student use?
a.
face opposite poles of the magnets toward one another, and vary their distance.
b.
face the same poles of the magnets toward one another, and vary their distance.
c.
face the same poles of the magnets toward one another, and vary their temperature.
d.
face opposite poles of the magnets toward one another, and vary their temperature.

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.