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
algol [13]
3 years ago
14

A 1200-N crate rests on the floor. How much work is required to move it at constant speed (a) 5.0 m along the floor against a fr

iction force of 230 N, and (b) 5.0 m vertically?
Physics
1 answer:
Bogdan [553]3 years ago
6 0

Answer:

(a) The work required to move the crate = 7150 J

(b) The Work required to move the crate vertically = 6000 J

Explanation:

(a) Frictional Force: These is the force that tend to oppose the motion of  two bodies in contact.

Work required to move the crate = work done against friction + work required to move it through a distance of 5.0 m.

Wr = Wf + Wd

Where Wr = work required to move the crate, Wf = work done against friction, Wd = work required to move the crate through 5.0 m

Given: Wf = friction force × distance = 230×5 = 1150 J

and Wd = force × distance = 1200×5.0 =6000 J.

Substituting these values into equation 1

Wr = 6000 + 1150

Wr = 7150 J

Therefore the work required to move the crate = 7150 J

(b)

Work required to move the crate vertically = mgh

or

Work required to move the crate vertically =  Wh................ Equation 2

Where W = weight of the block, h = vertical height

<em>Given:W = 1200 N, h= 5.0 m</em>

Substituting these values into equation 2

Work required to move the crate vertically = 1200×5

Work required to move the crate vertically = 6000 J

You might be interested in
A charge in motion is called a (n) ______.
Lubov Fominskaja [6]
<span>It's called an electric current</span>
7 0
3 years ago
Read 2 more answers
Two long, straight parallel wires 8.2 cm apart carry currents of equal magnitude I. The parallel wires repel each other with a f
o-na [289]

Answer:

36.22 mA

Explanation:

i1 = I , i2 = I, d = 8.2 cm = 0.082 m

Force per unit length = 3.2 nN/m = 3.2 x 10^-9 N/m

μo = 4 π × 10^-7 Tm/A

The formula for the force per unit length between the two wires is given by

F = μo / 4π x (2 i1 x i2) / d

3.2 x 10^-9 = 10^-7 x 2 x I^2 / 0.082

I = 0.0362 A = 36.22 mA

4 0
3 years ago
The mass of an electron is...
tester [92]
<span>The mass of an electron is not significant to the overall mass of the atom. (B)

It takes roughly 1,850 electrons to equal the mass of ONE proton or neutron,
but the most complex atom has only around 100 of them.</span>
4 0
3 years ago
Why is a silver spoon a good conductor
dangina [55]
Because it’s made of metal. And metal is a good conductor
4 0
3 years ago
Read 2 more answers
Does this marble have potential energy?<br> 1) no<br> 2)yes
jek_recluse [69]

Answer:

yes

Explanation:

because it has the potential to move

5 0
3 years ago
Other questions:
  • if you were to increase either mass or speed by a unit of 1 in a joules calculation, which would give you more energy?
    14·1 answer
  • Can you use a machine to gain both force and speed at the same time? explain.
    8·1 answer
  • What is the law that states that matter can not be created nor destroyed?
    13·1 answer
  • In the United States, car accidents are the leading cause of death for teenagers. Wearing seat belts helps save lives. Describe
    10·1 answer
  • A recipe for candy requires that the liquid ingredients be stirred constantly until the liquid reaches a temperature of 140°C. W
    9·2 answers
  • 20. A photographer takes an average of 15 pictures per session. The total
    14·1 answer
  • Can you think of other factors that may affect a carrying capacity
    15·1 answer
  • One ounce of a well-known breakfast cereal contains 103 Calories (1 food Calorie = 4186 J). If 1.6% of this energy could be conv
    15·1 answer
  • 14.What is the kinetic energy of a 3kg ball that is rolling 2m/s?
    8·2 answers
  • !!!!100 POINTS!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!