Interested to Buy Any Domain ? << Click Here >> for more details...
Why is it more efficient for a labourer to raise bricks up
to a brick layer by the use of a rope and pully than by
carrying them up a ladder ?
- 1 Answers
- 4138 Views
- I also Faced
- E-Mail Answers
Answer Posted / guest
Because the labourer has his own weight to raise as well as
that of the bricks when ascending a ladder, while with the
rope and pully only the load is raised and the energy is not
wasted.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Explain the structure of a dna molecule?
What is glacial acetic acid? What are its uses?
What is the reaction that occurring between fas and potassium dichromate?
Why is ammonia-ammonium chloride buffer added?
Differentiate between organic and inorganic chemistry?
What is the difference between fractionation and distillation?
What is the limitation of cod?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
What is si unit of viscosity-coefficient?
What is a potentiometer titration?
How is brass solution prepared?
Arrange by acidic values : phenol, nitrotolouene and o-cresol?
How are pka and strength of a weak acid related?
What is the bluish white precipitate formed after adding ammonia solution?
Define what is avogadro’s law?
