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
Liono4ka [1.6K]
3 years ago
12

The box is pushed to the right with a force of 40 Newtons and it just begins to move what is the maximum static frictional force

Physics
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

The maximum static frictional force is 40N.

Explanation:

When an object of mass M is on a surface with a coefficient of static friction μ, there is a minimum force that you need to apply to the object in order to "break" the coefficient of static friction and be able to move the object (Called the threshold of motion, once the object is moving we have a coefficient of kinetic friction, which is smaller than the one for static friction).

This coefficient defines the maximum static friction force that we can have.

So if we apply a small force and we start to increase it, the static frictional force will be equal to our force until it reaches its maximum, and then we can move the object and now we will have frictional force.

In this case, we know that we apply a force of 40N and the object just starts to move.

Then we can assume that we are just at the point of transition between static frictional force and kinetic frictional force (the threshold of motion), thus, 40 N is the maximum of the static frictional force.

You might be interested in
A 282 kg bumper car moving right at 3.50 m/s collides with a 155 kg bumper car moving 1.8 m/s left. Afterwards, the 282 kg car m
svetoff [14.1K]

Answer:

482.4kgm/s

Explanation:

7 0
3 years ago
the pitch that the average human can hear has a frequency of 20.0. If sound with this frequency travels through air with the spe
Natalka [10]

There are problems with the first sentence, and it's not really needed when
working with this question.  So let's just take the 20 (Hz ?) frequency from
the first sentence, and ignore the rest of it for right now.

           Wavelength = (speed) / (frequency) =

                                   (331 m/s) / (20 Hz) = <em>16.55 meters</em>.


8 0
3 years ago
Tala wants to create a sound echo. She can create the echo using a pane of glass or a carpet square. Which one does she choose?
Alisiya [41]
Carpet asorbs sound, so glass should make it echo.
7 0
3 years ago
During light activity, a 70-kg person may generate 200 kcal
Lerok [7]

Answer:

2.75387\ ^{\circ}

Explanation:

m = Mass of person = 70 kg

c = Specific heat of human body = 0.83\ J/kg^{\circ}C

\Delta T = Change in temperature

Time taken is 1 hour

Heat is given by

Q=mc\Delta T\\\Rightarrow \Delta T=\dfrac{Q}{mc}\\\Rightarrow \Delta T=\dfrac{0.8\times 200\times 1}{70\times 0.83}\\\Rightarrow \Delta T=2.75387\ ^{\circ}C

The rise in temperature is 2.75387\ ^{\circ}C

3 0
3 years ago
What is the average speed of a train that travels at 100km/hr for 6 hours and then 120km/hr for 5 hours
Sindrei [870]

Answer:

Explanation:

Average speed = Total distance / Total time.

100 km/hr

r = 100 km / hr

t = 6 hours

d = 6 * 100 = 600 km

120 km / hr

r = 120 km / hr

t = 5 hour

d = 120 * 5

d = 600 km

Total distance = 600 + 600 = 1200 km

Total time = 5 hour + 6 hours = 11 hours.

Average speed = 1200 km / 11 hours = 109.1

5 0
3 years ago
Other questions:
  • How does the position of the Sun in the sky affect the intensity of sunlight striking Earth's surface?
    7·2 answers
  • What is 9/15 equal to
    10·2 answers
  • HELP PLEASE!<br> write the equation for calculating relative velocity in one dimensional.
    15·1 answer
  • Which of the following graphs shows the relationship between two variables that obey the inverse square law?​
    12·1 answer
  • Which of these have an elliptical orbit around the sun?
    7·2 answers
  • HELP PLEASE!!!!!!!!!!!!!!!
    7·1 answer
  • A reagent is added to the blue solution to identify the copper 2 ions name the blue solution​
    13·2 answers
  • Click on image to see it <br><br> please show all steps and formulas
    5·2 answers
  • ______ interference occurs when two waves are out of phase.
    12·1 answer
  • Why does the periodic table work?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!