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
12345 [234]
3 years ago
15

The value of efficiency is never 100% or more in practice. why​

Physics
1 answer:
Alona [7]3 years ago
3 0

Answer: Because of presence of friction in most cases as friction exists in ever machine/body, so whenever it works, friction causes heat and sound energy as well, hence, proving that a system cannot be 100% efficient due to friction.

You might be interested in
Pls help me guys simple question​
Airida [17]

Answer:

please write neater

Explanation:

can you write neater so I can answer th question but also is a equal to b

7 0
4 years ago
How many atoms are in 3MgCl2?
Bogdan [553]

Answer:

3MgCl2 has 9 atoms.

Explanation:

The Element Magnesium (Mg) has 3 atoms.

The Element Chloride (Cl) has 6 attoms.

Their fore 6 + 3 is 9 of course. 3MgCl2 has 9 atoms.

BTW: 3MgCl2 is a molecular compound as well as H2O and CO2.

8 0
3 years ago
What is a benfit of useing a restince band in workouts?
andrey2020 [161]

Answer:

It makes it more difficult to move, making it stretch and exercise your muscles better becuse there is a resistant force to overcome.

Explanation:

-Sky :3

6 0
2 years ago
Read 2 more answers
If a current is two amps and the resistance is 3 ohms, how much voltage was needed?
Hunter-Best [27]

Answer:

6 V

Explanation:

We can solve the problem by using Ohm's law:

V=RI

where

V is the voltage in the circuit

R is the resistance

I is the current

In this problem, we know the current, I=2 A, and the resistance, R=3 \Omega, therefore we can find the voltage in the circuit:

V=RI=(3 \Omega )(2 A)=6 V

7 0
3 years ago
Work is always done when
dusya [7]
Its option 3 an object has potential energy
5 0
2 years ago
Other questions:
  • A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor of 2.4. What is the final pre
    6·1 answer
  • What is difference between non uniform and uniform circular motion?
    10·1 answer
  • Karen runs sets in basketball practice. She starts from a line runs 2.0 m, returns to the line, runs 4.0 m, to the line, runs 6.
    12·1 answer
  • What occurs along a convergent plate?
    11·1 answer
  • The moon is made up mostly of _______, similar to minerals on earth
    9·1 answer
  • Define very long base line interferometry
    8·2 answers
  • A reactor operating at 1 MW is scrammed by instantaneous insertion of $5.00 of negative reactivity. Approximately how long does
    12·1 answer
  • 6. Rebecca is playing softball and slides into home plate. Her weight is 600N. The Coefficient of static friction between her cl
    11·2 answers
  • Write the adverbs use in sentences no.1-5 ty​
    13·1 answer
  • Since sound is a mechanical wave it needs a ...... to travel through
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!