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
grin007 [14]
2 years ago
13

A 200 N object is resting on a surface with a coefficient of static friction equal to 0.15. A person pushes horizontally with a

force of 20 N. Calculate the magnitude of the force of friction.
Physics
1 answer:
Reika [66]2 years ago
3 0

Answer:

20 N

Explanation:

the force of static friction maximum = Fn * .15 = 200 * .15 = 30 N

  the force of friction will cancel out the 20 N force applied

    Ff = 20 N

You might be interested in
Difference between lower fixed point and upper fixed point​
sesenic [268]

Answer:

The lower fixed point, or ice point, is the temperature of pure melting ice at normal atmospheric pressure. The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.

Explanation:

4 0
3 years ago
The density of an object is how much matter it contains.<br> True or False?
vlabodo [156]

Answer:

true

Explanation:

8 0
3 years ago
Read 2 more answers
Virtual image formed by concave mirror<br>​
Elis [28]

Answer:

yes

Explanation:

because it is a diverging mirror

3 0
3 years ago
A tuning fork of frequency 254 Hz and an open orang pipe of slightly lower frequency are at 15oC. When
katovenus [111]

The temperature of the air in the open orang pipe has been altered by 18.73° C

The frequency of an open orang pipe is estimated by using the formula:

\mathbf{f = \dfrac{v}{2L}}

Then, the combination of the frequency of the tuning fork and the open orang pipe is:

\mathbf{254 - \dfrac{v}{2L} }

These combinations of frequency produce 4 beats per sound.

i.e.

\mathbf{254 - \dfrac{v}{2L}   =4}

\mathbf{ \dfrac{v}{2L} = 254-4 }

\mathbf{ \dfrac{v}{2L} = 250 ----(1)}

When it is altered, the beats first diminish and increase again by 4.

i.e.

\mathbf{ \dfrac{v'}{2L} = 254+4 }

\mathbf{ \dfrac{v'}{2L} = 258 --- (2) }

If we equate both equations (1) and (2) together, we have:

\mathbf{\dfrac{v'}{v}= \dfrac{258}{250}}

However, from our previous knowledge, we understand that the velocity of an object varies directly proportional to the square root of its temperature.

Hence;

  • when the temperature of the pipe  = unknown ???
  • the temperature of the open orang pipe = 15

∴

\implies \mathbf{\sqrt{\Big(\dfrac{273 + T}{273 + 15}\Big)}= \dfrac{258}{250}}

By squaring both sides, we have:

\implies \mathbf{\Big(\dfrac{273 + T}{273 + 15}\Big)}= \Big (\dfrac{258}{250}\Big )^2}

\implies \mathbf{\Big(\dfrac{273 + T}{273 + 15}\Big)= \Big (\dfrac{66564}{62500}\Big )}

\implies \mathbf{\Big(\dfrac{273 + T}{288}\Big)= \Big (1.065024\Big )}

\implies \mathbf{273 +T =306.726912  }

T = 306.726912 - 273

T ≅ 33.73 ° C

∴

The change in temperature ΔT = 33.73° C - 15° C

The change in temperature ΔT = 18.73° C

Learn more about wave frequency here:

brainly.com/question/14316711?referrer=searchResults

4 0
3 years ago
In a laboratory experiment, a diffraction grating produces an interference pattern on a screen. If the number of slits in (inclu
Darya [45]

Answer:

Explanation:

When the number of slits increases, the intensity of fringes increases.

So, the fringes appear to be more bright.

As we know that the fringe width is inversely proportional to the number of slits, so as the number of slits increases, the fringe width decreases, hence the fringes are narrower, bright and close together.

7 0
3 years ago
Other questions:
  • How do you solve for a net force
    8·1 answer
  • slader A uniform cylindrical grinding wheel of mass 50.0 kg and diameter 1.0 m is turned on by an electric motor. The friction i
    13·1 answer
  • Introduction This section describes the principles and concepts related to the experiment. It is used to help the person reading
    15·1 answer
  • Think of a real-life example of Boyle's law. Explain it.
    15·2 answers
  • A 410-g cylinder of brass is heated to 95.0*C and placed in a calorimeter containing 335 g of water at 25.0*C. The water is stir
    9·1 answer
  • one deterrent to burglary is to leave your front porch light on all the time if your fixture contains the 23 watt compact fluore
    6·1 answer
  • A 500N force applied against an unmoving object does 0J of work <br> Please help it’s a test !!!
    11·1 answer
  • A Scooter travelling at 10m/s speed up to 20m/s in 4 sec.find the acceleration of scooter​
    15·1 answer
  • Give a claim about what is affecting the orbital speed and how it affects it
    11·1 answer
  • The magnitudes of the two displacement vectors are _____ and ______
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!