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
Troyanec [42]
3 years ago
7

________ are used to reduce rolling friction.

Physics
2 answers:
Ratling [72]3 years ago
6 0
"SMOOTH SURFACES" are used to reduce rolling friction.
Flura [38]3 years ago
4 0
Replace the sliding friction with a rolling element friction like using a roll of element bearings.


Improve the lubrication by either  changing its viscosity or using a different or improved additives or you could use different lubricants too.
You might be interested in
Hair color is a trait that’s controlled by many genes working together. Each gene contributes to this trait only in a small prop
Katena32 [7]
Codominence i think, its both parents genes are used

3 0
3 years ago
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 2.4
NeX [460]

When person is observing destructive interference at 0.20 m distance from the equidistant position then we can say that path difference must be equal to half of the wavelength

now we will have

\frac{\lambda}{2} = \frac{yd}{L}

now we know that

y = 0.20 m

d = 2.4 m

L = 10 m

now here we have

\frac{\lambda}{2} = \frac{0.20\times 2.4}{10}

\lambda = 0.096 m

now frequency of wave is given as

f = \frac{v}{\lambda}

f = \frac{343}{0.096} = 3573 Hz

5 0
3 years ago
A parallel circuit has a 125 Volt battery connected with 3 resistors. R1= 20 Ω, R2= 100 Ω, and R3= 50 Ω. Find the total current
Musya8 [376]

Answer:

10A

Explanation:

to calculate r

1/R=1/20+1/100+1/50=2/25

r=25/2=12.5

I=125/12.5=10A

8 0
3 years ago
Read 2 more answers
The strength of a magnetic field follows _____.
ycow [4]
I think its Coulomb's law<span>
</span>
8 0
3 years ago
Read 2 more answers
Stellar nurseries, such as the orion nebula, contain hundreds or more fragmenting and contracting regions, as well as many proto
Natasha_Volkova [10]

The hydrogen fusion process will begin after the protostar reaches a temperature of 10 million degrees kelvin, and it will then turn into a stable star.

<h3>How does a protostar become a stable star?</h3>

The interstellar medium can sometimes be gathered into a large nebula, which is a cloud of gas and dust. A nebula can span a number of light years. These nebulae are where gas and dust can combine to produce stars. Until a star can combine hydrogen into helium, it cannot be considered a star. They are referred to as protostars before then. As gravity starts to gather the gases into a ball, a protostar is created. Accrution is the term for this procedure.

Gravitational energy starts to heat the gasses as gravity draws them into the ball's core, which causes the gasses to radiate radiation. Radiation initially just dissipates into space. However, much of the radiation is retained inside the protostar as it draws in stuff and becomes denser, which causes the protostar to heat up even more quickly.

The hydrogen fusion process will begin after the protostar reaches a temperature of 10 million degrees kelvin, and it will then turn into a star.

Learn more about a protostar here:

brainly.com/question/12534975

#SPJ4

3 0
1 year ago
Other questions:
  • Why we don’t say degrees Kelvin. For example Water freezes at 273K .
    15·1 answer
  • What was the significant change that Glenn Seaborg made to Mendeleev’s periodic table?
    11·1 answer
  • What defines minerals will mark brainlest if croccted right
    11·1 answer
  • A man pushes a cart with force of 120-N at an angle of 50 degrees with the ground. If he walks a horizontal displacement of 20-m
    12·1 answer
  • What is the name of the area between the shoreline and the continental slope ?
    12·1 answer
  • What is the word that means Have adapted to antibiotics
    11·1 answer
  • An infinitely large plane carries a uniformly distributed charge such that the charge per unit area is 3.47E-6 C/m2. What is the
    10·1 answer
  • What acceleration occurs if the friction force in #4 is now 4N?
    5·2 answers
  • Compare and contrast the shape and volume of each state of matter
    15·1 answer
  • A pick up truck heading south accelerates from 0 m/s to 22 m/s in 8.5 seconds.what is the truck acceleration?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!