Answer:
Magnetic fields can apply forces forces by the interaction between magnets and magnetic material
Explanation:
In a maglev train is made up of a train cart with superconducting magnets beneath, which is then mounted above specially designed maglev guideway. The non-contact motion of the train by the magnets is due to interaction between the magnetic field of the train with metallic loops in the guideway thereby inducing an opposing magnetic field in the loop which serve the purposes of 1. Keeping the train 5 inches above the guideway, 2. Maintaining horizontal stability and 3. Movement of the train through alternating the attractive and repulsive forces such that the resultant effect is the net movement of the train.
Explanation:
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Answer:
T=833.8 °C
Explanation:
Given that
m= 2 kg
T₁=200 °C
time ,t= 10 min = 600 s
Work input = 1 KW
Work input = 1 x 600 KJ=600 KJ
Heat input = 0.5 KW
Q= 05 x 600 = 300 KJ
Gas is ideal gas.
We know that for ideal gas internal energy change given as
ΔU= m Cv ΔT
For air Cv= 0.71 KJ/kgK
From first law of thermodynamics
Q = ΔU +W
Heat input taken as positive and work in put taken as negative.
300 KJ = - 600 KJ + ΔU
ΔU = 900 KJ
ΔU= m Cv ΔT
900 KJ = 2 x 0.71 x (T- 200 )
T=833.8 °C
So the final temperature is T=833.8 °C
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