Hi, I need your help with this Physics exercise, I hope you can help me
A pulse moving to the right along the x axis is represented by the function of
wave:

y (x, t) = 2 / (x-3t) ^ 2 + 1

Where x and are measured in centimeters and t in seconds.
a) Find the velocity, pulse amplitude, and expressions for the wave function at t = 0s, t = 1.0s
and t = 2.0 seconds.
b) What would happen if the wave function were:
y (x, t) = 2 / (x + 3t) ^ 2 + 1
How would this change the situation?

Ithink the answer is a

Awoodchuck would chuck all the wood he could chuck if a woodchuck could chuck wood.

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.