When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is considered to be_____________________________________.
A characteristic curve is the result of a current versus voltage plot of diode activity, which begins at the:____________________________________________________________.
Answers
Answer:
If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system. This energy is associated with the state of separation between two objects that attract each other by the gravitational force. For convenience, we refer to this as the PEg gained by the object, recognizing that this is energy stored in the gravitational field of Earth. Why do we use the word “system”? Potential energy is a property of a system rather than of a single object—due to its physical position. An object’s gravitational potential is due to its position relative to the surroundings within the Earth-object system. The force applied to the object is an external force, from outside the system. When it does positive work it increases the gravitational potential energy of the system. Because gravitational potential energy depends on relative position, we need a reference level at which to set the potential energy equal to 0.
Explanation:
The gravitational potential energy of mass m is 10J. What minimum energy is required to projects the body out of the gravitational field of earth?
a)2X10^7J
b)10^7J
c)3X10^-3J
d)none of the above