Given
Force=200N
Mass=5.5kg
F=ma
a=F/m=200/5.5=38.18metre per second
The approach I think you can take is to find the center of mass of the water when the tank is full and then find the center of mass of the same water volume when the water level is in the box car (i.e. after it has leaked). The center of mass should change because the tank is narrower than the boxcar.
So you can look at the water mass as moving from one height to another (i.e. change is center of mass). Take the entire mass of the water as the object that is moving. We then can use the conservation of energy to find the velocity of the boxcar. If the water were free-falling, then the speed would be along the y-axis. However, because the water stays in the boxcar, the y-forces are transferred along the x-axis and the boxcar is on frictionless rails the entire potential energy, <em>m * g * h</em> is converted to kinetic energy <em>1/2 * mv^2</em> Equate these two and solve for v. Note that the final velocity does not depend on mass at all, but you will need h, which will be the distance the center of gravity of the water system has moved.
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No deaf children dont. im deaf and i dident go through those stages.
Blue light has a shorter wavelength than does red light, and since it travels at the same speed (in vacuum) as red light, has a higher frequency. This gives it a higher energy per photon.
