1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stepladder [879]
3 years ago
5

to lift a load to roof, you apply 21 n of force to a pulley. the pulley applies 21 n of force to the load. what is the mechanica

l advantage of the pulley?
Physics
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

The mechanical advantage of the pulley is 1.

Explanation:

The mechanical advantage of the pulley is given as

MA=\frac{F}{f}

Here, MA is represent for the mechanical advantage of the pulley, F is load for lift and f applied force.

Given F =21 N and f= 21 N.

Substitute the given values, we get

MA=\frac{21N}{21N}

MA = 1.

Thus, the mechanical advantage of the pulley is 1.

You might be interested in
When the compasses are moved close to a wire with a current which will the compasses point
Sindrei [870]
<span>In this demonstration, there is a single compass and a piece of wire that is perpendicular to the plane that the compass sits on. The wire with current flowing through it can alter the direction the compass needle points.</span>
4 0
3 years ago
Read 2 more answers
                 All the processes that form mountain ranges are known as                
stepan [7]
All Mountains are built through a general process called "deformation" of the crust of the Earth. Deformation is a fancy word which could also mean "folding". An example of this kind of folding comes from the process described below. 

<span>When two sections of the Earth's lithosphere collide, rather than being subducted, where one slab of lithosphere is forced down to deeper regions of the Earth, the slabs pile into each other, causing one or both slabs can fold up like an accordion. This process elevates the crust, folds and deforms it heavily, and produces a mountain range. Mountain building and mantle subduction usually go together. </span>
3 0
3 years ago
A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off. What force does the wall exert on
Galina-37 [17]
The wall exerts a force of equal magnitude but in the opposite direction. So the force by the wall is 10 N to the right.
6 0
3 years ago
Read 2 more answers
A monochromatic light passes through a narrow slit and forms a diffraction pattern on a screen behind the slit. As the slit widt
maw [93]

Answer:

shrinks with all the fringes getting narrower

Explanation:

As the light passes through the slit, the diffraction pattern shrinks, as the waves have more opening to penetrate, and the fringes becomes more narrow as a result of that, The opposite happens as the conditions are reversed.

8 0
3 years ago
A nuclear accident (intentional or unintentional) can cause significant harm to those living nearby or at a distance. Harmful le
MrRissso [65]

Answer:Explained

Explanation:

Invisible gamma radiation does not transmit through Air or through contact thus standard precautions can  encompasses more than person-to-person contamination.

Some Standard Precautions are

  • Hand Hygiene

Use Alcohol based hand disinfectant and always use gloves.

  • Use Eye shields,Gowns,face shields .
3 0
3 years ago
Other questions:
  • The two days of the year on which neither hemisphere is tilted toward or away from the sun are called
    13·2 answers
  • Mr. Garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel is _____.
    8·2 answers
  • A plane takes off in san francisco at noon and flies toward the southeast. an hour later, it is 400 kilometers east and 300 kilo
    5·1 answer
  • According to the concept of length contraction, what happens to the length of an object as it approaches the speed of ligh and t
    8·2 answers
  • If the force applied to an object is
    15·1 answer
  • What do you think would happen to the boiling point of water if you were to cook pasta near the Dead Sea in Israel, which is 1,2
    8·2 answers
  • A school bus moves down a road, dropping off students after school. The bus slows down from a speed of 15 meters per second to a
    6·1 answer
  • The velocity of a car increases from 10 km/h to 50 km/h in 5 seconds. What is its acceleration?
    10·1 answer
  • An object on earth with a mass of 7.5 kg has a weight of
    10·1 answer
  • How long must a pendulum be to have a period of 4.6 5 on Neptune, where g = 11.15 m/s?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!