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
daser333 [38]
3 years ago
15

Explain how machines can be useful if the output is always less than the input work

Physics
1 answer:
Anni [7]3 years ago
6 0

Because: Some of the work done by the machine is used to overcome the friction created by the use of the machine. ... Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.

You might be interested in
The drawing shows three objects rotating about a vertical axis. The mass of each object is given in terms of m0, and its perpend
photoshop1234 [79]

Answer:

I₁ > I₃ > I₂

Explanation:

Taking the pic shown, we have

m₁ = 10m₀

m₂ = 2m₀

m₃ = m₀

r₁ = r₀

r₂ = 2r₀

r₃ = 3r₀

We apply the formula

I = mr²

then

I₁ = m₁r₁² = (10m₀)(r₀)² = 10m₀r₀²

I₂ = m₂r₂² = (2m₀)(2r₀)² = 8m₀r₀²

I₃ = m₃r₃² = (m₀)(3r₀)² = 9m₀r₀²

finally we have

I₁ > I₃ > I₂

7 0
3 years ago
HELPPPPP it’s due in 10 minutes
iris [78.8K]

Answer:

A.c

Explanation:

The chromosphere is above the photosphere, the visible "surface" of the Sun. It lies below the solar corona, the Sun's upper atmosphere, which extends many thousands of kilometers above the chromosphere into space. The plasma (electrically charged gas) in the chromosphere has a very low density.

In basic terms it is the 2nd one out from the core.

7 0
3 years ago
Which of these is not true about the proton?
bulgar [2K]

Answer:

Option C is the untrue statement.

5 0
3 years ago
Read 2 more answers
A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5 m/s.
nignag [31]
The kinetic energy (KE) is 250 J and the gravitational potential energy (GPE) is 392 J
4 0
3 years ago
What is a plane mirror? state the characteristics of the image formed by a plane mirror ​
Nadusha1986 [10]
A plane mirror always forms a virtual image. the image and the object are the same distance from a flat mirror, the image size is the same as the object, and the image is upright!
3 0
2 years ago
Other questions:
  • An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number.
    9·2 answers
  • Jana is observing a young autistic boy in a preschool classroom. Her job is to note each time the boy gets up from his chair wit
    15·1 answer
  • What is the transfer of energy to an object using a force that causes the object to move in the direction of the force?
    13·1 answer
  • Plutonium has a half life of 2.4 × 104 years. How long does it take for 99.0% of the plutonium to decay?
    12·1 answer
  • What is the second law of thermodynamics
    8·1 answer
  • How are mechanical waves caused <br><br> please answer ASAP
    7·2 answers
  • Please help me with the correct answer​
    9·1 answer
  • A police car is driving north with a siren making a frequency of 1038 hz. Moops is driving north behind the police car at 12 m/s
    10·1 answer
  • What is the magnitude of the linear momentum of a 7.30 kg bowling ball going down the
    15·1 answer
  • Question 81 point)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!