What is power of a hair dryer if it uses 72000 found a of energy in 60.0 seconds

Your answer would be, 72000/60 = 1200 j/s   1200 watts
Equation: Power  is the rate of transfer in energy = Energy/Time

Hope that helps!!!

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later