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An electric dipole consists of charges +e and -e separated by 0.76 nm. It is in an electric field of strength 2.50 10^4 N/C.
A) What is the value of the dipole moment? (in C x m)
B) What is the torque on the dipole when it is perpendicular to the field? (in m x N)
C) What is the torque on the dipole when it is at an angle of 45 degrees to the field? (in m x N)
D) What is the work required to rotate the dipole from being oriented parallel to the field to being antiparallel to the field?
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
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What is the energy density. Find out the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.
find the arrow's initial speed? How long did it take for the arrow to first reach a height of 17.5 m above its launch point.
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