the speed of sound in water is slower than the speed of air
Answer:
5.98 m
Explanation:
= 11.15*4.6²/(4π²) = 5.98 m
Answer:
The work done is 120000 J.
Explanation:
Given that,
Weight = 600 N
Distance = 200 m
We need to calculate the work done
Using formula of work done
Where, F = force
d = distance
Put the value into the formula
Hence, The work done is 120000 J.
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Permanent magnets are important for their industrial uses especially when it comes to power generation and electric motors. The induction process for turbines and generators needs permanent magnets to turn mechanical motion into energy.
Exposing magnetized magnets to opposing external fields produces a demagnetizing effect. This effect is most apparent in permanent magnet materials having a non-linear demagnetization curve, such as Alnico. ... Other factors such as SHOCK and VIBRATION have very little effect on today's permanent magnet materials.
