Apparent magnitude of a star is the brightness of the star observed from the Earth at its actual position. The value extends in both positive and negative direction. Increasing value of apparent magnitude in positive direction means that the brightness is decreasing. Absolute magnitude is the apparent magnitude of the star when the star is at 10 parsecs distance away from earth.
It is given that a star is 500 light-years away from earth moved to be 600 light years away. The value of absolute magnitude of the star does not changes. But the value of apparent magnitude changes with the distance. It would increase as the distance would increase. The star would appear less bright.
Since the speed is constant, acceleration is zero hence the net force will be given by the product of mass, coefficient of friction and acceleration due to gravity
<span>The Earth’s internal "((HEAT))" source provides the energy for our dynamic planet, providing it with the driving force for on-going disastrous events such as earthquakes and volcanic eruptions and for plate-tectonic motion. </span>
