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
vladimir1956 [14]
3 years ago
7

A 25kg chair initially at rest on a horizontal floor requires 165 N force to set it in motion. Once the chair is in motion, a 12

7 N horizontal force keeps it moving at a constant velocity. Find the coefficient of static friction between the chair and the floor.
Physics
1 answer:
bazaltina [42]3 years ago
3 0

The coefficient of static friction between the chair and the floor is 0.67

Explanation:

Given:

Weight of the chair = 25kg

Force = 165 N (F_applied)

Force = 127 N (F_max)

To find: Coefficient of static friction  

The “coefficient of static friction” between a chair and the floor is defined as the ration of maximum force to the normal force acting on the chair  

μ_s=F_{max}/F_{n}  

The F_n is equal to the weight multiplied by its gravity

∴F_{n}=mg  

Thus the coefficient of static friction changes as

μ_s=F_{max}/mg

μ_{s} = =165N/((25kg)\times(9.80 m/s^2 ) )

= 0.67

You might be interested in
HELPPPPPPPPPPPPPP 70PTS NOT A LIE
jeka57 [31]

Explanation:

  1. a magnetic substance is one that is attracted by magnets
  2. electricity and magnetism are two related phenomena produced by electromagnetic force.A moving electric charge forms a magnetic field
  3. ferromagnetism is a a magnetism related to iron,cobalt, nickel or
8 0
2 years ago
Read 2 more answers
Recall that photosynthetic rates remain relatively constant in regions near the equator. Imagine that tropical environments pers
solniwko [45]

Answer:E.

a straight line sloping upward (atmospheric CO2 levels would not seasonally oscillate, but would have increased over time)

Explanation: Photosynthesis is the process through which green plants and certain other organisms make their food using carbon dioxide and water in the he presence of Sunlight.

During photosynthesis, energy conversion from light energy into chemical energy takes place.

Photosynthesis is one of the major processes that helps to eliminate and reduce the quantity of carbon dioxide in the atmosphere,it also serve to make oxygen present in the atmosphere.

8 0
3 years ago
A little girl is going on the merry-go-round for the first time, and wants her 50kg mother to stand near to her on the ride 2.1m
aliya0001 [1]
Angular momemtum : mass * tangential speed * distance to the center = 50*2.1*3.6=37800 J.s
3 0
3 years ago
PLz I Need Help PLZZZ ASAP
AURORKA [14]

#1

As we are increasing the frequency in the simulation the wavelength is decreasing

So if speed remains constant then wavelength and frequency depends inversely on each other

If we are in boat and and moving over very small wavelengths then these small wavelength will be encountered continuously by the boat in short interval of times

#2

As we are changing the amplitude in the simulation there is no change in the speed frequency and wavelength.

So amplitude is independent of all these parameter

Amplitude of wave will decide the energy of wave

So light of greater intensity is the light of larger amplitude

#3

In our daily life we deal with two waves

1 sound waves

2 light waves

3 0
3 years ago
Free point cuz i cewl like dat‍♀️‍♂️
DedPeter [7]
Yes thank u teehee




.................... x
8 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following would be more likely to utilize capitalism-based land management methods?
    10·2 answers
  • TECHNOLOGY A Lamborghini Aventador accelerates from rest to 100 km / h in 2.9 s. The mass of the car is 1575 kg Calculate the po
    14·1 answer
  • Which type of stress is a uniform stress that doesn't lead to earthquakes?
    7·2 answers
  • How does end A of the rod react when the charged ball approaches it after a great many previous contacts with end A? Assume that
    11·1 answer
  • The stoplights on a street are designed to keep traffic moving at 24 mi/h. The average length of a street block between traffic
    15·1 answer
  • The 49-g arrow is launched so that it hits and embeds in a 1.45 kg block. The block hangs from strings. After the arrow joins th
    5·1 answer
  • sketch a graph of position vs. time for a person starting 0.4 m away and standing still. Include an explanation of your predicti
    8·1 answer
  • 1) Andrea and Chuck are riding on a merry-go-round. Andrea rides on a horse at the outer rim of the circular platform, twice as
    14·1 answer
  • D. If they are dropped from their original heights at the same time, will the melon or
    15·1 answer
  • Information about mars' moons.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!