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
fgiga [73]
3 years ago
14

In a shipping yard, a crane operator attaches a cable to a 1,400 kg shipping container and then uses the crane to lift the conta

iner vertically at a constant velocity for a distance of 40 m. Determine the amount of work done (in J) by each of the following.
Physics
1 answer:
Molodets [167]3 years ago
4 0

Answer:

Explanation:

Given

mass of crane m=1400\ kg

distance moved d=40\ m

Since it is moving with a constant velocity therefore net force on it is zero

Tension force=weight

T=mg

Work done by Tension T is

W_T=T\cdot d

W_T=1400\times 9.8\cdot 40

W_T=548.8\ KJ

Work done by Gravity will be equal in magnitude but opposite in sign and can be obtained by work energy theorem which states that change in kinetic energy of object is equal to work done by all the forces

W_T+W_g=0

W_g=-548.8\ KJ

                                 

You might be interested in
The intensity of a 70-dB whistle is quintupled. What is the new decibel level
hoa [83]

Multiplying the power of any signal by 5 can be described as
an increase of  6.99 dB .

If the whistle blew at 70 dB initially, and its sound power became
multiplied by 5, and the whistle and the listener both stayed in
the same places, then the listener would tell you that the whistle
was now blowing at 76.99 dB .

(More likely, he would report "77 dB" as he held his ears and winced.)

7 0
3 years ago
Determine the magnitude of the component of F directed along the axis of AB. Set F = 520 N .
Soloha48 [4]

Answer:

The component of F along AB is equal to Fcos45

F = 520N

Component along AB = 520cos45

= 367.7N

This is done by rotating the diamonds such that AB is now taken as the x-axis. Then the force F is resolved along AB.

Explanation:

7 0
3 years ago
Read 2 more answers
The mass of an object is 275.32g and its density is 7.562g/cm 3 . Calculate its volume by keeping significant figures in view.
Genrish500 [490]

Answer:

36.408cm3

Explanation:

Since we acknowledge that density is d= m/v, once we switch it up to maintain v as the number to be found it will change to v=m/d. Therefore, 275.32/7.562 is 36.408 and the unit is cm cube!

Hope that helped!!

8 0
3 years ago
What does it mean to say that momentum is conserved?
balu736 [363]
The momentum of two or more objects during collisions is not lost nor gained
8 0
3 years ago
You’ve made the hypothesis that the stepper the slope , the faster a ball will be rolling when it reaches the bottom .
BigorU [14]

Answer:

B) how steep the slope is

Explanation:

Because you have to know how is the influence of the steep of the slope in the time that a ball reaches the bottom. The steep of the slope is the variable that you would have to change in an experiment.

I hope this is useful for you

regards

4 0
3 years ago
Other questions:
  • Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?
    9·1 answer
  • How are chargeable cells different from ordinary dry cells​
    13·1 answer
  • What hormone is not related to stress
    7·1 answer
  • Newton's law of gravitation states that two masses will ______.
    9·2 answers
  • A ball is thrown into the air with 100 J of kinetic energy, which is transformed to gravitational potential energy
    10·1 answer
  • A 5.3 kg block initially at rest is pulled to the right along a frictionless, horizontal surface by a constant horizontal force
    7·2 answers
  • A car starts at the top of a hill with 200 J of energy, and rolls down a frictionless surface. The isolated system consists of t
    8·1 answer
  • We calculated the speed of visible light through four substances. What is different about the substances? Lesson: 4.10 Substance
    14·1 answer
  • A 3.0 kg object moving 8.0 m/s in the positive x-direction has a one-dimensional elastic collision with an object of mass, M, in
    5·1 answer
  • Question 2 of 5
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!