C.) <span>The total mass of an object can be assumed to be focused at one point, which is called its center of "Mass"
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<span>The nature of potential energy is that the zero point is arbitrary; it can be set like the origin of a coordinate system. That is not to say that it is insignificant; once the zero of potential energy is set, then every value of potential energy is measured with respect to that zero. Another way of saying it is that it is the change in potential energy which has physical significance.
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Are breathing hard. This is because cardiovascular exercise makes the heart beat faster which in turn creates a need for more air.
Answer:
500 hours
Explanation:
The sum of total hours over its lifetime will be given by
Where T is total time, r is rate in decimal and To is the original charge hours. Substituting the original charge hours with 5 hours and rate as 0.99 then the time will be
Therefore, the time is equivalent to 500 hours
The reflected beam of light passes through the focal point of the mirror.
In fact, a ray travelling parallel to the principal axis of a concave mirror passes through the focal point after it is reflected back from the mirror. This can be seen for instance in this figure:
http://www.cyberphysics.co.uk/graphics/diagrams/light/mirrors/concave_ray1.gif
where the situation described by the problem is shown with the red ray: the beam travels parallel to the principal axis and it is reflected through the focal point.