halieghs7280 halieghs7280
  • 11-03-2024
  • Physics
contestada

Jill does 270 joules of work pulling the rope on a pulley to lift a crate. The output work of the pulley is 235 Joules. What is the efficiency of the machine?

a) 87%
b) 82%
c) 78%
d) 88%

Respuesta :

Otras preguntas

who created the camera
How do muscle cells form different types of tissues?
baa baa the black sheep had 7 pounds of wool. If he separated the wool eqally into 3 bags how much wool would be in 2 bags
What is 3 times 3? What is f5 times 5? What is 9189 dived by 3 times 7 squared?
what are living organisms, and all matter made of?
2 factors of 20. Add up to 9 what are they?
square root of 81x to the 4th power
What is the volume of a sphere if the radius is six
How did the colonists' experiences under British rule influence their decision to change the Constitution?
in plant cells,what does the vacuole do