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
Mnenie [13.5K]
3 years ago
9

in a lever, a load of 600N is lifted by using 400 effort. If the load is at the distance of 20cm and the effort at the distance

of 40cm from the fulcrum, calculate its efficiency​
Physics
1 answer:
koban [17]3 years ago
8 0

Explanation:

Load (l) = 680N

Effort (E) = 500N

Length slope (l) = 12m

Height slope (h) = 8 m

Output = load * height

680 *8 = 5.44 *103 J

The Input = effort * length = 500 *12 = 6000J

the Mechanical advantage (M.A) = load effort= 600500=1.36

the Velocity ratio (V.R) =lh=128 = 1.5

the Efficiency =M.A100%V.R= 90.6%

You might be interested in
A heavy copper ball of mass 2 kg is dropped from a fiftieth-floor apartment window. Another one with mass 1 kg is dropped immedi
STALIN [3.7K]

Answer:

C

Explanation:

Because everything on Earth falls at the same speed, the masses of the balls do not matter. Since the acceleration due to gravity is constant, their speeds will both be increasing at the same rate, and therefore the difference in speeds would remain constant until they hit the ground. Hope this helps!

5 0
3 years ago
your teacher shows you a cell that contains filaments that can cause the cell to contract,shortening the length of the cell.to w
nika2105 [10]

The cell belongs to the then musculoskeletal system of the body.

<h3>What type of cells contains filaments that can cause the cell to contract, shortening the length of the cell?</h3>

The myocytes or muscle cells are special cells found in smooth, cardiac, and skeletal muscles that have differentiated for the specialized function of contraction.

Myocytes are long, cylindrical, multi-nucleated, and striated. They contain filaments that can cause the cell to contract, shortening the length of the cell.

Skeletal muscle cells contain many mitochondria required to generate sufficient ATP since skeletal muscle cells have high energy requirements.

The muscle cells form a part of the musculoskeletal system of the body.

In conclusion, muscle cells are required for muscular contraction.

Learn more about muscle cells at: brainly.com/question/15441674

#SPJ1

8 0
2 years ago
Please send help my way. 10 points to the brainliest
antoniya [11.8K]
The possible units for impulse would be:
<span>(N. s)
</span><span>(kg. m/s)</span>

4 0
4 years ago
What is your displacement if you travel 5 miles north to the store
kumpel [21]

Answer:

5miles North

Explanation:

The displacement to the store is 5miles northward.

Displacement is the distance traveled in a specific direction. Displacement is a vector quantity.

A vector has both magnitude and direction.

The magnitude is the amount of that quantity

The direction is its orientation from a reference.

 Therefore, the displacement is 5miles north

3 0
3 years ago
The seeds were sown (change the voice)​
MaRussiya [10]

Answer:

He sowed the seeds

Explanation:

While the question should have given the person who did the sowing for example the seeds were sown by him/ her/ the farmer/ or any name. Therefore, voice is given in passive and to change passive voice to active voice then the sentence will read as follows assuming that the seeds were sown by him

He sowed the seeds

7 0
3 years ago
Other questions:
  • The gaps on Mendeleev's table _____.
    8·1 answer
  • 4. You make the following measurements of an object: 42 kg and 22 m3. What would the object’s density be?
    13·1 answer
  • If the gravitational forces exist between all objects in the universe why aren't people affected by the gravitational force exer
    9·1 answer
  • On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves (tsunami) that killed som
    6·1 answer
  • Late on an autumn day, the relative humidity is 44.0% and the temperature is 20.0°C. What will the relative humidity be that ev
    6·1 answer
  • Can someone pls explain this question to me. Thanks in advance! ​
    11·1 answer
  • Hey help me and thanks in advance if you do​
    5·2 answers
  • A closed, rigid container holding 0.2 moles of a monatomic ideal gas is placed over a Bunsen burner and heated slowly, starting
    12·1 answer
  • Thank youuuu.........
    6·1 answer
  • make a sketch showing the direction of the magnetic field from the solenoid. on your sketch, label the induced north magnetic po
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!