Observer A is moving inside the train
so here observer A will not be able to see the change in position of train as he is standing in the same reference frame
So here as per observer A the train will remain at rest and its not moving at all
Observer B is standing on the platform so here it is a stationary reference frame which is outside the moving body
So here observer B will see the actual motion of train which is moving in forward direction away from the platform
Observer C is inside other train which is moving in opposite direction on parallel track. So as per observer C the train is coming nearer to him at faster speed then the actual speed because they are moving in opposite direction
So the distance between them will decrease at faster rate
Now as per Newton's II law
F = ma
Now if train apply the brakes the net force on it will be opposite to its motion
So we can say
- F = ma
so here acceleration negative will show that train will get slower and its distance with respect to us is now increasing with less rate
It is not affected by the gravity because the gravity will cause the weight of train and this weight is always counterbalanced by normal force on the train
So there is no effect on train motion
You have to divide the pressure exerted by the air into two partial pressures: of the dry air and of the water vapor. Combining these two values gives you the parameter.
If it helps or doesn't I'm sorry, but if you even played the game Minecraft just remember it.
Gold, silver, coal, and iron come from ores.
Answer:
0.71 J
Explanation:
320 g = 0.32 kg
According to law of energy conservation, the energy loss to external environment (air, ground) can be credited to the change in mechanical energy of the ball.
As the ball was dropped at H = 2 m above the ground then later reaches its maximum height at h = 1.2m, tts instant speed at those 2 points must be 0. So the kinetic energy at those points are 0 as well. The change in mechanical energy is the change in potential energy.
Let g = 9.81 m/s2
Since 1.8J of 2.51 J is due to work by air resistance, the rest of the energy (2.51 - 1.8 = 0.71 J) is would go to heating in the ground and ball when it bounces.
Answer:
A) attachment.
Explanation:
The psychiatrist and psychoanalyst John Bowlby (1907 - 1990) believed that the causes of mental health and behavioral problems could be attributed to early childhood. In fact, John Bowlby's <u>attachment theory states that we have been biologically preprogrammed to build bonds with others and that they help us survive.
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Bowlby was greatly influenced by ethological theory in general, but above all by Konrad Lorenz's study of the imprint done with ducks and geese in the 50s. From this, Lorenz demonstrated the survival value of the attachment bond by Your innate character
Thus, Bowlby thought that attachment behaviors were instinctive and that, in addition, their activation depended on any condition that could threaten the achievement of proximity, such as separation, insecurity or fear.
John Bowlby's attachment theory defends that children are biologically programmed to form bonds with others.
