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
Tresset [83]
3 years ago
6

The box leaves position x=0x=0 with speed v0v0. The box is slowed by a constant frictional force until it comes to rest at posit

ion x=x1x=x1. Find FfFfF_f, the magnitude of the average frictional force that acts on the box. (Since you don't know the coefficient of friction, don't include it in your answer.) Express the frictional force in terms of mmm, v0v0v_0, and x1x1x_1.
Physics
1 answer:
const2013 [10]3 years ago
8 0

Answer:

fr = ½ m v₀²/x

Explanation:

This exercise the body must be on a ramp so that a component of the weight is counteracted by the friction force.

The best way to solve this exercise is to use the energy work theorem

            W = ΔK

Where work is defined as the product of force by distance

           W = fr x cos 180

The angle is because the friction force opposes the movement

          Δk =K_{f} –K₀

          ΔK = 0 - ½ m v₀²

We substitute

         - fr x = - ½ m v₀²      

           fr = ½ m v₀²/x

You might be interested in
Being able to see a square in the middle of the image despite not having lines to form a square represents the Gestalt principle
vredina [299]

Answer: The correct answer for the blank is -

C. closure.

Gestalt principle of closure describes how we perceive complete figures even when the information that form the figure is missing.

This is due the fact that our brain responds to the familiar patterns inspite of getting incomplete information.

For instance, in the given question, we are able to perceive an image of square in the center despite not having actual lines that form a square.

Thus, it represents principle of closure.

7 0
3 years ago
Read 2 more answers
A fuel cell that is becoming very popular for cars runs on:
jok3333 [9.3K]
It runs on Hydrogen gas.

Actually, using hydrogen as a fuel is not new. We used to use it on air vehicle like air balloon. But back then, we still cannot figure out how to safely use this because Hydrogen exlodes rather easily
7 0
3 years ago
What are the three main reservoirs of the oxygen cycle?
nika2105 [10]
<span>c. the atmosphere, the biosphere and the water cycle</span>
5 0
3 years ago
Which of the following is a scientific question?
scZoUnD [109]

Answer:

Hey

C Which LED screen design is the most energy-efficient?

In physics, we talk about energy, not the best price, or which one looks the best, or if it violates a patent

3 0
3 years ago
Read 2 more answers
An electron beam moves toward a cathode ray tube screen, which is 50 cm away from the negative electrode. The electrons are acce
zheka24 [161]

Answer:

Maximum displacement of the Electron beam= 0.0124m

Explanation:

Detailed solution of the question is given in the attached files.

6 0
3 years ago
Other questions:
  • A man paddles a canoe at 6 km per hour. If he paddles on a river with a current of 6 km per hour, what is the speed of the canoe
    13·1 answer
  • A reaction that releases heat is what
    11·1 answer
  • Which feature of the sun is a section that is cooler than its surroundings?
    7·2 answers
  • ¿Que es un átomo???????
    9·1 answer
  • Bullets from two revolvers are fired with the same velocity. The bullet from gun #1 is twice as heavy as the bullet from gun #2.
    6·1 answer
  • An instrument that measures air pressure using a partially evacuated chamber is called a(n ________ barometer.
    14·1 answer
  • PART A) The acceleration of gravity is 9.8 m/s^2 What is the magnitude of the net force on a(n) 82 kg driver operating a dragste
    10·1 answer
  • An electric heater rated 600 w operates 6 hours per day find the cast to operate it for 30 days , at rs. 4.00 per unit​
    10·1 answer
  • When light passes through sequential interfaces, there may be a change of phase upon reflection at each interface.
    10·1 answer
  • Please help me and I’ll mark as brainliest i promise
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!