Electromagnets have certain advantages over permanent magnets. One of the major advantage is, the amount of electric current can easily be controlled, in turn, magnetic field can be controlled. Out of all the options, option D would be the best answer.
In short, Your Answer would be option D) Electromagnets can easily be turned on and off.
Hope this helps!
A solution is a homogeneous mixture such as salt water
Answer:
i believe 222222222222222222222 mikeoclong
Explanation:
Answer:
A. 4.82 cm
B. 24.66 cm
Explanation:
The depth of water = 19.6 cm
Distance of fish = 6.40 cm
Index of refraction of water = 1.33
(A). Now use the below formula to compute the apparent depth.
(B). the depth of the fish in the mirror.
Now find the depth of reflection of the fish in the bottom of the tank.
Answer is a) the force caused by the wend nag encountering wind and air.
