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
jek_recluse [69]
3 years ago
13

Ahsoka pulls a wounded soldier (mass 64 kg) across the ground with a force 18 Newtons. If they have an acceleration of 1.5 m/s2

Physics
2 answers:
Mekhanik [1.2K]3 years ago
7 0

Hello!

Let's applicate formula:

F - Ff = ma

How we dont know friction force, we descompose it in:

F - (μ * N) = ma

Now, lets replace (N = Is the normal force, or weight in this case):

18 N - (μ * (64 kg * 9,81 m/s²) = 64 kg * 1,5 m/s²

First, lets resolve parenthesis:

18 N - (μ * 627,84 N) = 96 N

The force happens to subtract:

- (μ * 627,84 N = 96 N - 18 N

-μ = 78 N / 627,84 N

-μ = 0,124

The value of <u>μk = 0,124</u>

Kryger [21]3 years ago
4 0

Answer:

0.124

Explanation:

18-(9.81*64)*k=64*1.5

You might be interested in
Two stars orbit each other in a _ solar system
Brilliant_brown [7]
This is a binary star system
4 0
3 years ago
Read 2 more answers
In Linnean taxonomy, the most unique level is _____.<br><br> species<br> genus<br> kingdom<br> breed
Nookie1986 [14]
The answer is species, I hope this helps!
6 0
3 years ago
Read 2 more answers
A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. at point a the speed of the car is 1
pav-90 [236]
I attached the missing picture.
The force of seat acting on the child is a reaction the force of child pressing down on the seat. This is the third Newton's law. The force of a child pressing down the seat and the force of the seat pushing up on the child are the same.
There two forces acting on the child. The first one is the gravitational force and the second one is centrifugal force. In this example, the force of gravity is always pulling down, but centrifugal force always acts away from the center of circular motion.
Part A
For point A we have:
F_a=F_cf-F_g
In this case, the forces are aligned, centrifugal is pointing up and gravitational is pulling down.
F_a=m\frac{v^2}{r}-mg=179 $N
Part B
At the point, B situation is a bit more complicated. In this case force of gravity and centrifugal force are not aligned. We have to look at y components of this forces, y-axis, in this case, is just pointing upward.
F=F_{cf}\cos(30)-mg=m\frac{v^2}{r}\cos(30)-mg=153.2$N
Part C
The child will stay in place at point A when centrifugal force and force of gravity are in balance:
F_g=F_{cf}\\&#10;mg=m\frac{v^2}{r}\\&#10;gr=v^2\\&#10;v=\sqrt{gr}=8.29\frac{m}{s}

6 0
3 years ago
Calculate the de Broglie wavelength of a 0.56 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h)
PilotLPTM [1.2K]

The de Broglie wavelength of a 0.56 kg ball moving with a constant velocity of 26 m/s is 4.55×10⁻³⁵ m.

<h3>De Broglie wavelength:</h3>

The wavelength that is incorporated with the moving object and it has the relation with the momentum of that object and mass of that object. It is inversely proportional to the momentum of that moving object.

λ=h/p

Where, λ is the de Broglie wavelength, h is the Plank constant, p is the momentum of the moving object.

Whereas, p=mv, m is the mass of the object and v is the velocity of the moving object.

Therefore, λ=h/(mv)

λ=(6.63×10⁻³⁴)/(0.56×26)

λ=4.55×10⁻³⁵ m.

The de Broglie wavelength associated with the object weight 0.56 kg moving with the velocity of 26 m/s is λ=4.55×10⁻³⁵ m.

Learn more about de Broglie wavelength on

brainly.com/question/15330461

#SPJ1

6 0
1 year ago
How do protons, neutrons and electrons determine the properties of the atoms??? HELP! NEED SCIENCE HELP FAST!!!!
Roman55 [17]
The number of protons determines the element. Many elements also have many isotopes. Such as carbon-14 Carbon-12 and carbon-10.
4 0
3 years ago
Other questions:
  • Why is it helpful to study the light that comes off stars?
    15·1 answer
  • Is an object moving in a circle at a constant speed accelerating?
    7·1 answer
  • Most of the Earth's volcanoes occur
    5·1 answer
  • Are lions stronger then tigers?
    12·1 answer
  • The quantum theory of radiation reflects:
    8·1 answer
  • The distance between 4 nodes (3 sections, 2 sections= wavelength) is 15.0cm. The frequency of the source is 10Hz. What's the spe
    7·1 answer
  • How much power does it take to lift 70.0 N to 5.0 m high in 5.00 s?
    15·1 answer
  • . The photo shows Steve Hewitt and his daughter Gretchen. Is Gretchen touching her dad, or is he touching her? Explain.​
    6·1 answer
  • Directions: Read each question carefully and answer
    6·1 answer
  • If there were no external forces acting on the two pucks, their complex motion could be described as the combination of the unif
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!