Apendulum consists of a 2 kg bob attached to a light string of length 3 m. the bob is struck horizontally so that it has an initial horizontal velocity of 4.1 m/s. for the point at which the string makes an angle of 30° with the vertical, calculate the following: (a) the /s)(b) the gravitational potential energy (relative to its value is at the lowest )(c) the tension in the )(d) what is the angle of the string with the vertical when the bob reaches its greatest )

Bag of bolts weight 29.4n

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.