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
timofeeve [1]
3 years ago
11

When you apply a horizontal force of 76 N to a block, the block moves across the floor at a constant speed ().When you apply a f

orce of 89 N, what is the magnitude of the horizontal component of the force that the floor exerts on the block?
Physics
1 answer:
elena-s [515]3 years ago
3 0

Answer:

Explanation:

When we apply a horizontal force of 76 N to a block, the block moves across the floor at a constant speed. So net force on the block is zero .

It implies that a force ( frictional ) acts on it which is equal to 76 N in opposite direction ( friction )

When we apply  a greater force on it it starts moving with acceleration .

This time kinetic friction acts on it due to rough ground equal to 76 N .This is limiting friction ( maximum friction )

Net force on the body in later case

= 89 - 76

= 13 N

Force by ground on the block in horizontal direction = 76 N ( FRICTIONAL FORCE )

=

You might be interested in
Help me please
yarga [219]
1. False
2.False
3.False
4.True
5. True
6. False
7.True
8.False
9. True
10. False

3 0
3 years ago
Read 2 more answers
A laser of wavelength 720 nm illuminates a double slit where the separation between the slits is 0.22 mm. Fringes are seen on a
kumpel [21]

Answer:

The appropriate solution is "2.78 mm".

Explanation:

Given:

\lambda = 720 \ nm

or,

  = 720\times 10^{-9} \ m

D=0.85 \ m

d = 0.22 \ mm

or,

  =0.22 \times 10^{-3} \ m

As we know,

Fringe width is:

⇒ \beta=\frac{\lambda D}{d}

hence,

Separation between second and third bright fringes will be:

⇒ \theta=\beta=\frac{\lambda D}{d}

       =\frac{720\times 10^{-9}\times 0.85}{0.22\times 10^{-3}}

       =2.78\times 10^{-3} \ m

or,

       =2.78 \ mm

8 0
2 years ago
I need help doing this i don’t understand what to do
Hatshy [7]

Answer:

You need to write an essay with 800 to 1,200 words. That talks about the significance of one of the seminal works (Definition- a work that strongly influenced people. Example: Martin Luther King Jr's speech "I Have A Dream") in the unit and how it connects to current issues (Example- Politics). It should be clearly stated and should be well supported by research (Example- a trustworthy article talking about its influence). You should properly cite at least 3 good sources from different perspectives. (Example- a republicans view for one source, a democratic for another, and a neutral for the third) You should also use direct quotes (Example: "Let them eat cake." - Marie Antoinette) and paraphrase- put it in your own words. (Example: Marie Antoinette said that they should eat cake.) I hope this helps, good luck! :)

Explanation:

7 0
2 years ago
Which planetery body has the greast gravitational pull?
Nataly [62]
Answer should be the earth
7 0
2 years ago
A train slows from 60m/s to 20m/s in 50s
Dovator [93]

Answer:

a = -4/5 m/s^2

Explanation:

Acceleration = change in velocity / time

change in velocity = final velocity - initial velocity

a = (20 m/s - 60 m/s) / 50 s

a = -40 m/s / 50 s

a = -4/5 m/s^2

hope this helps! <3

7 0
1 year ago
Read 2 more answers
Other questions:
  • Why do we experience a high tide twice a day?
    9·1 answer
  • Before Mt. Everest was discovered, what was the highest mountain in the world?
    13·1 answer
  • Gasoline flows in a long, underground pipeline at a constant temperature of 15o C (rho = 680 kg/m3 ; ν = 4.6 × 10-7 m2 /s). Two
    6·1 answer
  • A wire of length L is wound into a square coil with 167 turns and used in a generator that operates at 60.0 Hz and 120 V rms val
    8·1 answer
  • How can you safely experiment with plants during a scientific investigation?
    10·2 answers
  • What would MOST LIKELY happen if the amount of incoming solar energy decreased without a change in the amount of reflection or o
    14·2 answers
  • What change occurs to the gravitational force of attraction between two bodies when the
    6·1 answer
  • You push a 2.0 kg block against a horizontal spring, compressing the spring by 14 cm. then you release the block, and the spring
    6·1 answer
  • • 2. A 70 kg man on a 100 kg boat throws a ball. The boat moves backwards 5 meters in 10 seconds. What is
    8·1 answer
  • Why are paperclips attracted to magnets? Group of answer choices They contain silver They contain aluminum They contain tin They
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!