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
leva [86]
3 years ago
11

How much work did the movers do (horizontally) pushing a 41.0-kg crate 10.6 m across a rough floor without acceleration, if the

effective coefficient of friction was 0.60?

Physics
1 answer:
VLD [36.1K]3 years ago
5 0

Answer:

The required work done is 2555.448~J

Explanation:

Consider 'F' is the applied force on the crate and 'f' be the force created by friction. According to the figure if '\mu_{k}' be the coefficient of friction, then

f = \mu_{k} \times N = \mu_{k} \times Mg

where 'M', 'N' and 'g' are the mass of the crate, the normal force aced upon the block and the acceleration due to gravity respectively.

Since the application of force by the movers does not create any acceleration to the block, we can write

F = f = \mu_{k} \times M \times g = 0.6 \times 41~Kg~ \times 9.8~m~s^{-2} = 241.08~N

So the work done (W) in moving the crate by a distance s = 10.6 m is

W = F \times s = 241.08~N \times 10.6~m = 2555.448 J

You might be interested in
What is the energy of a photon whose frequency is 6.0 x 10^20?
omeli [17]

Answer:

3.75 MeV

Explanation:

The energy of the photon can be given in terms of frequency as:

E = h * f

Where h = Planck's constant

The frequency of the photon is 6 * 10^20 Hz.

The energy (in Joules) is:

E = 6.63 x10^(-34) * 6 * 10^(20)

E = 39.78 * 10^(-14) J = 3.978 * 10^(-13) J

We are given that:

1 eV = 1.06 * 10^(-19) Joules

This means that 1 Joule will be:

1 J = 1 / (1.06 * 10^(-19)

1 J = 9.434 * 10^(18) eV

=> 3.978 * 10^(-13) J = 3.978 * 10^(-13) * 9.434 * 10^(18) = 3.75 * 10^(6) eV

This is the same as 3.75 MeV.

The correct answer is not in the options, but the closest to it is option C.

6 0
3 years ago
Choose the sentence that might be found in a personal narrative that correctly uses both a gerund and an infinitive.
Mumz [18]
Let's start with an infinitive: it has a form "to..." - only sentences C and D have a phrase like this, so we can exclude other options.

Among those, C does not have a gerund, which is a verbal form: "dreaming" has a function of a noun there.

So the correct answer is the remaining one, D.
3 0
3 years ago
You leave your house at 7:50
igor_vitrenko [27]

Answer:

LOL what?

Explanation:

3 0
2 years ago
Read 2 more answers
Please follow my sis on i.n.s.t.a.g.r.a.m Id - tehzz_13
Alisiya [41]

Answer:

Explanation:

ok

4 0
2 years ago
When designing an experiment, why is it important to test only one variable?
m_a_m_a [10]
That's the only way you can get consistent and accurate results. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • FORENSIC SCIENCE--
    12·1 answer
  • Under what circumstances does distance traveled equal magnitude of displacement? What is the only case in which magnitude of dis
    7·1 answer
  • Heat engines use heat to do work. true or false.
    15·2 answers
  • A student uses an indicator to measure the pH of a solution. The indicator shows a pH of 7. What must be true of this solution?
    13·2 answers
  • I need help matching I’m lost
    8·1 answer
  • To teach you how to find the parameters characterizing an object in a circular orbit around a much heavier body like the earth.
    9·1 answer
  • What do we call living things that share characteristics including processes that make life possible?
    8·1 answer
  • 4. Which of the following statement describes the particle model.
    9·2 answers
  • A roller coaster is released from the top of a track that is 125 m high. Find the rollar coaster speed when it reaches ground le
    5·1 answer
  • How long will it take a plane to fly 1256km<br> if it travels 500km/hr?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!