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
k0ka [10]
3 years ago
9

a 3.46 kg box is sitting at rest on a flat floor. a.) what is the weight of the box. b.) what is the normal force on the box

Physics
1 answer:
just olya [345]3 years ago
4 0

A) The weight of the box is given by:

W = mg

W = weight, m = mass, g = gravitational acceleration

Given values:

m = 3.46kg, g = 9.81m/s²

Plug in and solve for W:

W = 3.46(9.81)

W = 33.9N

B) The box is sitting at rest on the floor. This means that the box is in equilibrium; the two forces acting on it, its weight and the normal force that the floor exerts on it, are equal in magnitude and opposite in direction. Therefore the normal force N acting on the box has a magnitude of 33.9N

You might be interested in
WHICH TYPES OF ENERGY ARE HAPPENING
Lady bird [3.3K]

Answer:

mecanichal energy

Explanation:

................

8 0
3 years ago
Astronomers define the __________ as all of space and everything in it. It is enormous, almost beyond imagination. Question 2 op
Genrish500 [490]

Answer:

Universe

Explanation:

I took the quiz.

3 0
3 years ago
A box is being moved with a velocity (v) by a force P (parallel to v) along a level horizontal floor. The normal force is (Fn),
labwork [276]

Answer:

Force (P) : Positive

Normal Force (Fn) : Zero

Weight (mg) : Zero

Kinetic Frictional Force (fk) : Negative

Explanation:

The work done by a force on an object is given by the following formula:

W = F.d

W = F d Cosθ

where,

W = Work Done

f = Force Applied

d = displacement

θ = Angle between force and displacement

<u>FOR FORCE (P)</u>:

Since, force P is parallel to the motion of the box. Therefore, θ = 0°

Hence,

W = P d Cos 0°

W = P d(1)

W = Pd

<u>Therefore, work done by force (P) is Positive.</u>

<u></u>

<u>FOR NORMAL FORCE (Fn) AND WEIGHT (W)</u>:

Since, normal force and weight are perpendicular to the motion of the box. Therefore, θ = 90°

Hence,

W = Fn d Cos 90°= mg d Cos 90°

W = Fn d(0) = mg d (0)

W = 0

<u>Therefore, work done by Normal Force (Fn) and Weight (mg) is Zero.</u>

<u></u>

<u>FOR KINETIC FRICTIONAL FORCE (fk)</u>:

Since, kinetic frictional force acts in the opposite direction of motion of the box. Therefore, θ = 180°

Hence,

W = fk d Cos 180°

W = fk d(-1)

W = -fk d

<u>Therefore, work done by Kinetic Frictional Force (fk) is Negative.</u>

<u></u>

8 0
3 years ago
Help !!!! Estimate the number of breaths taken by a person during 44 years?
Lisa [10]
44 x 12. I got the 12 from the total of 12 months in a year.


44 > 40

x
12 > 10
----------
The way my teacher taught me how to estimate is look at the neighbor to 44 and 12. The only time 44 can become 50, is when the neighbor is 5 or up. Same thing for 12. Now, multiply 40 and 10.

40 x 10 = 400.

Therefore, your estimate is 400.

The real answer is 520 breaths.
6 0
2 years ago
Magnetic Field: is a region around the charged particle where the electric force is exerted on other charged particles.
nalin [4]
The answer for this question should be TRUE
8 0
1 year ago
Other questions:
  • Write a sentence or short paragraph that defines and explains an adaptation
    6·1 answer
  • Planet z has a rocky surface. at height 3240 km above the surface, the gravitational acceleration is what is the radius of the p
    13·1 answer
  • Which heat transfer method is used to capture the sun's energy?
    7·1 answer
  • Light travels from crown glass (n=1:52) into air (n=1.00). The angle of refraction in
    11·1 answer
  • Can anybody answer this​
    8·1 answer
  • How people change their thinking and behaviors is central to which
    9·1 answer
  • The ratio of the speed of light in a medium to the speed of light in a vacuum is called its ______________ index.
    7·2 answers
  • 2.1kilograms into grams (1000g=1kg)
    14·1 answer
  • Which of the following is NOT a kind of energy store?
    8·1 answer
  • For for each situation say how the ideas of force pressure and area can be applied :
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!