Julieg13
Julieg13 Julieg13
  • 04-03-2016
  • History
contestada

Why were there no cables for electricity in the early elevators

Respuesta :

krazykane52
krazykane52 krazykane52
  • 04-03-2016
Because older elevators were able to move because of a bunch of chains so they didn't know how to make it so that the cord wouldn't get cut also they didn't know how to make the cord extend and move with the elevator.
Answer Link
DoctorGaro
DoctorGaro DoctorGaro
  • 06-03-2016
because it was on an atomatic system not much electrical
Answer Link

Otras preguntas

Heating zinc sulfide in the air causes the formation of
copy this figure onto grid paper. draw line to divide the figure into 4 congruent polygons. how do you know the ploygons are congruent
Determine the half-life of potassium if in 3460 years a 200 g sample decayed into 25 g
What is the main idea of Truman's statement about the use of atomic weapons
what is the cubic root of - 250
If the function h(x) represents the number of full hours that it takes a person to assemble x sets of tires in a factory, which would be an appropriate domain f
Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.
How do you do this algebra question
A certain test is worth 155 points. How many points (rounded to the nearest point) are needed to obtain a score of 65%?
List two factors that might cause an organism to restrict its use of a resource.