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Q. An electric dipole p makes the angle of 30° with a uniform electric field of magnitude 300 N/C. If the torque on the dipole is 3 × 10-12 N • m after that calculate the magnitude of the dipole moment p.
Q. A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d. The inner shell has the total charge of -1q and outer shell has a total charge of +3q.
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 correspondingly and released. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do angular frequencies of th..
A 2.46×10^4 rocket blasts off vertically from the earth's surface with a constant acceleration. Throughout the motion considered in the problem, suppose that remains constant. Inside the rocket, a 15.10 instrument hangs from a wire that can support a..
what is the potential difference between the plates. A particular freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall.
Assume that you wish to fabricate a uniform wire out of .60 g of copper. Assume the wire has a resistance R = 0.300 and all of the copper is used.
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
A high-frequency photon is scattered off of an electron and experiences a change of wavelength of 8.0×10-4 .At what angle should a detector be placed to detect scattered photon (relative to the direction of the incoming photon).
If a vehicle is traveling at velocity v and takes a distance d to stop, then how fast is a vehicle traveling if it takes a distance of 3d to stop. suppose mass and acceleration are equal.
find the magnitude and direction of the field at this point.
How much Power does it take to accelerate the 70,000 lb rail car from rest to 10mph in 20 feet with 1ft dia. wheels.
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
Two students are on a balcony a distance h above the street. One student throws a ball vertically downward at a speed vi; at the same time, the other student throws a ball vertically upward at the same speed. Answer the following symbolically in t..
What is the direction of E for points. find the balls initial speed.
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