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
Amiraneli [1.4K]
3 years ago
14

What do understand by the efficiency of a machine? By using a block and tackel a man can raise a load of 720 N by an effort of 1

80 N.Find the mechanical advantage of the method.
​
Physics
1 answer:
motikmotik3 years ago
6 0

Answer:

Efficiency of a machine is how well the machine works and what the machine is capable of doing.

Mechanical advantage=Load/Effort.

720/180=4

You might be interested in
Your own car has a mass of 2000. Kg if your car produces a force of 5000 N how fast will it accelerate?
Marizza181 [45]
F = m*a
5000 = 2000 * x
5000/2000 = x
2.5 = x
2.5m/s^2 = a


4 0
4 years ago
A device that has the capacity to receive and store electrical energy is a(n)
sergeinik [125]
The answer to your question is capacitor :)
6 0
3 years ago
Read 2 more answers
What did johannes kepler contribute to the study of planets
Nana76 [90]
Johannes Kepler was a main stargazer of the Scientific Revolution known for detailing the Laws of Planetary Motion. A stargazer, obviously, is a man who contemplates the sun, stars, planets and different parts of room. Kepler was German and lived in the vicinity of 1571 and 1630. 
Despite the fact that Kepler is best known for characterizing laws in regards to planetary movement, he made a few other striking commitments to science. He was the first to discover that refraction drives vision in the eye and that utilizing two eyes empowers profundity recognition.
4 0
3 years ago
Read 2 more answers
Where in the circuit of (Figure 1) is the current the largest, (a), (b), (c), or (d)?
strojnjashka [21]
"<span>The current is the same at all points" is the one among the following choices given in the question that answers the question correctly. The correct option among all the options that are given in the question is the fifth option or the last option. I hope that this is the answer that has come to your desired help.</span>
6 0
3 years ago
How much work is done when a 214 newton force pushes a sleeping cow 37m across a field.
nata0808 [166]
Hello!

Answer: 
7918 J

Explanation:

We are assuming that the floor (field) is completely horizontal since there's no information about that in the statement. 

We are going to use the following formula:

W= F . Cos \alpha . D

Where:

F=214 N
\alpha =0º
D= 37m

Then, by substituting we have:

W=214N . Cos (0).37m= 7918 N.m=7918 J

8 0
3 years ago
Other questions:
  • Raven throw a baseball directly downward from a terrace froma speed of 5.0 m/s. How fast it will be moving when it hits the path
    13·1 answer
  • Which of the following statements describe the transfer of energy?
    10·1 answer
  • What do geographers explore
    7·2 answers
  • consider two charges. one has a charge of +15.mC and the other a charge of -3.00mC. if the electrostatic force between these cha
    6·1 answer
  • Mechanical Energy is _______ when the amount of kinetic and potential energies added together remains the same.
    9·1 answer
  • What type of heat transfer is happening when the sun warms your face
    11·2 answers
  • How shadows are formed?​
    15·1 answer
  • What is energy and what is the formula of energy
    7·1 answer
  • How are babies formed?​
    13·2 answers
  • A sound wave has a frequency of 250 Hz and a wavelength of 2.5 m. What is the speed of the wave?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!