How much power does it take to lift 250 n,40 m high in 2 seconds

Power = force * distance / time

the force is 250 Newton and time is 2 seconds
distance is 40 meters

power = 250N * 40m / 2s
power = 5000 (Nm/s)

Newton-meter per second is equal to a Watt so

power = 5000W

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