Answer:
The amount of work must be do to rotate the bar magnet is 151.2 J
Explanation:
Given:
Magnetic moment

Magnetic field
T
To find work do to rotate the bar magnet,
From the formula of work done in case of magnetic field,

Here
changes 0 to 180
But 


J
Therefore, the amount of work must be do to rotate the bar magnet is 151.2 J
Answer:
please do not trust those scam links
Using
KE = ½mv² = ½×1500×19×19 = 270750 joules
Answer:
Force is a vector, so vector adding the forces will give you the net force.
As you have only given us magnitudes and not directions of forces, we can help you no further than telling you the magnitude of the net force will be in the range 180 - 140 = (40 N ≤ Fnet ≤ 320 N) = 180 + 140
Explanation: