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
Archy [21]
2 years ago
11

Efficiency of a machine is always less than 100% why?

Physics
1 answer:
kifflom [539]2 years ago
7 0

The reason the efficiency is always less than 100% is because there is always some sort of friction in the machine.


Answer: because of friction

You might be interested in
I need help answering this question in the photo (middle)
GalinKa [24]
I believe it is because of weight if Timmy is larger and bigger than Maria that would mean he would stop slower just because of his bodyweight pushing on the back of the skateboard while Maria is all those skinny and she doesn’t have as much weight as she can go farther
3 0
3 years ago
Which of the following is an example of kinetic energy?
tresset_1 [31]
B. Sound, because everything else sits still and sound waves move
5 0
3 years ago
A current of 5.0 a flows through an electrical device for 10 seconds. how many electrons flow through this device during this ti
melisa1 [442]
1 Amp = 1 Coulomb/sec
1 Coulomb/sec = 6.25*10^18 electrons/sec

Therefore,
5.0 A = 5 C/s = 5*6.25*10^18 = 3.125*10^19 e/s

In 10 second, number of electrons are calculated as;
Number of electrons through the device = 3.125*10^19*10 = 3.125*10^20 electrons

4 0
3 years ago
Graphite crystals can be used as a lubricant.<br> TRUE<br> FALSE
timurjin [86]
I think its true because they are a soft solid that can be broken down into a liquid... Hope this helps in any way :3
6 0
3 years ago
Read 2 more answers
Julie's psychologist helped her get over her fear of spiders. Which goal of psychology has the phycologist met ?
lord [1]
<span>The four goals of psychology are: describe observed phenomena, explain them, predict what may occur as a result of them and control behaviour as a result. Julie’s psychologist has helped Julie control her behaviour - her fear response to spiders - so they have met the ‘control behaviour’ goal of psychology.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • A wire with radius 23 cm has a current of 7 A which is distributed uniformly through its cross sectional area. If you were to us
    9·1 answer
  • Name the three different types of radiation and describe how they are different in their penetrating abilities. Explain.
    6·2 answers
  • A boy picks up a bowling ball. Which of the following choices correctly describes the interaction between the boy and the bowlin
    14·2 answers
  • What has to happen to sediment in order for it to become sedimentary rock?
    7·2 answers
  • Paco was driving his scooter west with an initial velocity of 4 m/s. He accelerates at 0.5 m/s2 for 30 seconds.
    12·2 answers
  • Why is water not suitable for hydraulic machine​
    15·1 answer
  • IM BEGGING ILL GIVE BRAINLEST PLEASEEEEEEE HELP ME Distance and amount of charge are factors that determine which of the
    9·1 answer
  • Is grade 10 harder or 9? I passed 9 grade thise year by 89,36 my mark..im scared of high school plis help and some advice ?
    12·1 answer
  • To which end of the horseshoe magnet will the north end of the magnet be attracted
    8·1 answer
  • The linear expansion coefficient of aluminium is 24 × 10^-6 (°C)^-1. When thetemperature is 33 °C, a spherical aluminium ball ha
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!