The second, fourth, and seventh answers apply. Energy in a closed system is conserved, but it can change form
Answer:
A group of atoms where the magnetic fields of the atoms point in the same direction is a magnetic domain.
Explanation:
- In every magnet's magnetic field there is a region where the magnetization is in the same direction. This region is known as magnetic domain.
- In the magnetic domain the atoms always points in the same magnetic filed direction.
- All the atom's magnetic field align in one particular direction.
- This region where atoms align is called as domains.
complete question:
An observer at the top of a 462-ft cliff measures the angle of depression from the top of the cliff to a point on the ground to be 5°. What is the distance from the base of the cliff to the point on the ground? Round to the nearest foot
Answer:
a ≈ 5281 ft
Explanation:
The observer at the top of a 462 ft cliff measures the angle of depression from the top of the cliff to a point on the ground to be 5°.
The angle of depression form the top of the cliff = 5°
The 5° is outside the triangle formed . To find the angle in the triangle we have to subtract 5° from 90°. 90° - 5° = 85° Note sum of an angle on a right angle is 90°.
using SOHCAHTOA principle we can solve for the distance from the base of the cliff to the point on the ground(a)
tan 85° = opposite / adjacent
tan 85° = a / 462
cross multiply
462 × tan 85° = a
a = 11.4300523 × 462
a = 5280.66 ft
a ≈ 5281 ft
