Answer:
W=F⋅l=F⋅vt=900(N)⋅19.44(m/s)⋅900(s)=15.75⋅10
6 (J)
Explanation:
The answer is "A magnetic field influences the motion of charged particles. The negatively-charged particles will experience a force acting against their motion, so the negatively-charged particles would slow down and stop moving."
This is because for example;
Have you ever seen a magnet? If so, you would experience the same scienario as above.
Answer:
I think the answer is As you increase the current the resistance increases too.
Efficiency =Velocity Ratio/Mechanical Advantage *100%
80%=6/MA*100%
Therefore MA=7.5
MA=Load/Effort
7.5=300/E
E=300/7.5
E=40