The body will take 20 seconds to cover a distance of 1000 m i.e. 1 km
Answer:
A. friction is greatly reduced.
Explanation:
Maglev train runs on the principle of repulsion force due to magnetic field
here we know that magnetic field will apply force on the train which helps to levitate train in air
This is why it runs forward due to other component of magnetic force and hence it can run with high speed in air with least friction as there is no two surfaces in contact with each other
So here we can say that
Train run with very high speed due to least value of friction between two surfaces which moves relative to each other
so correct answer is
A. friction is greatly reduced.
Explanation:
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Answer:
Explanation:
From the question we are told that:
Focal length of lens 
Image distance 
Height of image 
Generally the lens equation is mathematically given by
Where 
is Subject
Therefore the distance between the person and the car is
V=IR
I=V/R
R=V/I
these are the realations of voltage ,resistance , and current .
