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
postnew [5]
3 years ago
13

A box weighs 1300 N. When a horizontal force of 390 N has applied the box accelerates at 1.3 m/s2. What is the magnitude of the

frictional force?
Physics
1 answer:
katrin [286]3 years ago
8 0

Answer:

Ffriction = 217.7[N]

Explanation:

First, we must find the mass of the box, we must remember that the weight is defined as the product of the mass by acceleration.

w=m*g

where:

w = weight [N] (units of Newtons)

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

1300=m*9.81\\m=132.51[kg]

Now we must use Newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F sum of forces

m = mass = 132.51[kg]

a = acceleration = 1.3[m/s²]

We must know that the forces that act are the horizontal force that moves the box and the friction force in the negative direction that acts against the movement.

Now replacing:

390-f_{friction}=132.51*1.3\\390-172.26=f_{friction}\\f_{friction}=217.7[N]

You might be interested in
A tuning fork is vibrating the air around it. What best describes the waves produced by the tuning fork?
never [62]

The answer is B on the quiz

9 0
3 years ago
Read 2 more answers
A machining company needs to manufacture more than 20 fixtures in a day. The company uses five identical machines to make the fi
balu736 [363]

a put a my boy

Explanation:

5x5=25 so it would be a

5 0
2 years ago
2 a A pile of 60 sheets of paper is 6 mm high. Calculate the average thickness of a sheet of the paper.
fiasKO [112]

The average thickness of a sheet of the paper is 0.1 mm.

The number of ice blocks that can be stored in the freezer is 80 blocks of ice.

<h3>Average thickness of a sheet of the paper</h3>

The average thickness of a sheet of the paper is calculated as follows;

average thickness = 6 mm/60 sheets = 0.1 mm /sheet

Thus, the average thickness of a sheet of the paper is 0.1 mm.

<h3>Volume of each block of ice</h3>

Volume = 10 cm x 10 cm x 4 cm

Volume = 400 cm³

<h3>Volume of the freezer</h3>

Volume = 40 cm x 40 cm x 20 cm = 32,000 cm³

<h3>Number of ice blocks that can be stored</h3>

n = 32,000 cm³/400 cm³

n = 80 blocks of ice

Thus, the number of ice blocks that can be stored in the freezer is 80 blocks of ice.

Learn more about average thickness here: brainly.com/question/24268651

#SPJ1

6 0
1 year ago
Consider the case in which the object is between the lens and the focal point. Trace the P ray (use the label P1 for the segment
Pani-rosa [81]

Answer:

See attachment

Explanation:

The diagram attached is a sketch of rays when the object is placed between the lens and focal point. As can be seen, the image in such cases is always on the same side of lens as the object. It is formed beyond the focal point from the lens and is magnified

8 0
3 years ago
According to Erik Erikson, the problem of _______ will arise during adolescence as teens try to establish a sense of their perso
mixer [17]
D. role diffusion is answer

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which structure is part of the inner ear?
    12·2 answers
  • Average velocity is different than average speed because calculating average velocity involves ?
    6·2 answers
  • What does a fern ultimately depend on as an energy source?
    6·1 answer
  • Synthetic fibers, such as nylon, are made of long-chain
    15·2 answers
  • Fluency means that
    5·2 answers
  • The Kyoto Protocol, which limits emissions of greenhouse gases for developed nations, is an example of which type of law? A. con
    7·2 answers
  • Which has more momentum, a 2.0 kg dog at 41 m/s or a 75 kg pony at 1.0 m/s?
    12·1 answer
  • A square coil of wire of side 3.95 cm is placed in a uniform magnetic field of magnitude 2.25 T directed into the page as in the
    9·1 answer
  • When applying a force to a book on a desk, the force must be greater than the force of
    5·1 answer
  • 100.0 J of work accelerates a 0.500 kg hockey puck across an ice rink (a frictionless
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!