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
zlopas [31]
3 years ago
8

No machine can achieve 100% efficiency in terms of work output. In any mechanical system, what is considered the most common cau

se for some of the work being turned into thermal energy?
A) friction
B) inefficiency
C) poor design of the machine
D) not using the machine properly
Biology
2 answers:
Alex777 [14]3 years ago
3 0
The answer is A, friction.

Friction is the force that resists movement, and that's why oil is used as a lubricant and why ball bearings are used for machines that need to move with very little friction(i.e. bike wheels, roller skates, fidget spinners)

Answer B is too vague
C will probably reduce efficiency greatly, but not specifically in a way that turns work into thermal energy.
D is the same as C, except that it places the blame on the person using the machine, not the machine itself.


Hope I helped clear it up for you :)
iren [92.7K]3 years ago
3 0
The answer is A, Friction. The other ones don't make sense

Friction- action of one surface or object rubbing against one another

Hope this helps!
You might be interested in
What is the structure of the inferior vena cava
earnstyle [38]

Answer:

Structure. The IVC is formed by the joining of the left and right common iliac veins and brings collected blood into the right atrium of the heart. It also joins with the azygos vein (which runs on the right side of the vertebral column) and venous plexuses next to the spinal cord.

Source: common iliac vein; lumbar veins;

4 0
2 years ago
I need help please!!! ASAP Please I am begging you!!!
Nata [24]

Answer:

A if not A then its D

Explanation:

Mrk me branliest PLZZZZZZZZZ

3 0
2 years ago
Where is 78 % of all nitrogen found on earth
Ne4ueva [31]

Answer:

In the earths atmosphere or air

Explanation:

7 0
3 years ago
Read 2 more answers
______ energy is converted into________ energy during the process of_________
bezimeni [28]

Answer:

LIGHT ENERGY is converted to CHEMICAL ENERGY in the process of PHOTOSYNTHESIS

Explanation:

According to the law of conservation of energy, energy cannot be created nor destroyed but can only be changed from one form to another. This means that no form of energy gets destroyed but only transformed. This is evidently so in so many natural processes including the process of PHOTOSYNTHESIS undergone by plants.

Photosynthesis, which is the way plants obtain their food via sunlight, converts the LIGHT ENERGY of the sun to CHEMICAL ENERGY in glucose produced. Hence, photosynthesis obeys the law of conservation of energy.

7 0
3 years ago
How are elements identified in terms of their atoms?
Jobisdone [24]
The number of protons in the atom can be used to determine the element
6 0
3 years ago
Read 2 more answers
Other questions:
  • During their early stages of development, the embryos of reptiles, birds, and mammals look very similar. this suggests that rept
    13·2 answers
  • What process uses atomic particles of carbon and uranium to determine exact age?
    13·2 answers
  • Which species seem the least alike?
    12·1 answer
  • Else has been hallucinations and suffering from delusions. in addition to schizophrenia, she could also be suffering from:
    10·1 answer
  • What part of an environment are a swarm of bees?
    10·1 answer
  • Which natural methods remove CO2 from the atmosphere? respiration ofa. living organisms B.photosynthesis by plants C.evaporation
    8·2 answers
  • The American College of Sports Medicine's recommendations for physical activity include a minimum of
    5·1 answer
  • Please help it’s urgent!!
    14·1 answer
  • Which two events happen in the rock cycle
    13·2 answers
  • which is not considered to be an animal behavior? please choose the correct answer from the following choices, and then select t
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!