You are measuring the pressure with a sensor embedded in a bridge. The bandwidth of the sensor is only 30 Hz, which means it can only measure changes less than 30 times a second. However, there is a 60 Hz high power power line nearby that might affect the signal acquisition. To reduce the induced noise to minimum, which type of filter should be used?Design a filter that can filter out all the noises with a 10 kΩ resister.

Ithink it is letter b, i may be wrong but i think that is the answer

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.