It is is real because potential energy is stored inside gravitational energy.
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Answer:
D) The spring will contract, raising the weight.
Explanation:
According to the statement there is current that will enter the current through the metal ions that it has in its stratum. The passage of the current will generate within the spring a magnetic field that travels in a loop. That is, while the upper part of the spring which is also that of the spring acts as a north pole, the lower part of the spring and the magnetic field will act as the south pole. The position of the poles will generate an opposition effect that will generate an attraction to each other which will generate a contraction in the spring and an increase in weight on it.
A reactant since it is on the left of the arrow
Answer:
16.46 seconds.
13.46 seconds
2.67 m/s²
Explanation:
Acceleration = a = 1.35 m/s²
Final velocity = v = 80 km/h = 
Initial velocity = u = 0
Equation of motion
Time taken to accelerate to top speed is 16.46 seconds.
Acceleration = a = -1.65 m/s²
Initial velocity = u = 80 km/h=
Final velocity = v = 0
Time taken to stop the train from top speed is 13.46 seconds
Initial velocity = u = 80 km/h=
Time taken = t = 8.3 s
Final velocity = v = 0
Emergency deceleration is 2.67 m/s²
