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
Andre45 [30]
4 years ago
13

A crane at a construction site lifts a concrete block with a mass of m = 344 kg from the ground to the top of a building with a

height of h = 18.3 m. How much work did the motor of the crane do? (Assume zero energy loss in the lifting mechanism due to friction.)
Physics
1 answer:
Rama09 [41]4 years ago
6 0

Answer: Work that the motor of the crane do is 61122 joules.

Explanation:

Work is defined as the force resulting into displacement of an object.

w=m\times g\times h

w = work done

m= mass of object = 334 kg

g = acceleration due to gravity = 10ms^{-2}

h = height of an object  = 18.3 m

Putting in the values:

w=334\times 10ms^{-2}\times 18.3m=61122Joules

Thus work that the motor of the crane do is 61122 joules

You might be interested in
Part A A supernova that occurs 10,000 years from now in a galaxy 50,000 light years away: A supernova that occurs 10,000 years f
melisa1 [442]

The Supernova will be observed on Earth 60,000 years from now.

<h3>What is Supernova?</h3>
  • A supernova is a star's tremendous and brilliant explosion. It is referred to as a supernova or a supernovae and is abbreviated as SN or SNe.
  • This fleeting astronomical occurrence takes place either when a white dwarf is set off into uncontrolled nuclear fusion or during the latter phases of the development of a big star. The original object, known as the progenitor, either disintegrates completely or falls into a neutron star or black hole.
  • Before fading over the course of several weeks or months, the peak optical luminosity of a supernova can be similar to that of an entire galaxy.
  • Compared to novae, supernovae are more energetic. Nova, which in Latin means "new," refers to what appears to be a transitory new bright star in astronomy. Supernovae can be distinguished from regular novae by the prefix "super-."

To learn more about Supernova with the given link

brainly.com/question/12702138

#SPJ4

6 0
2 years ago
Which explains why more energy is released in nuclear reactions than in chemical reactions? Chemical reactions are always endoth
Natali [406]
More energy is released in nuclear reactions than in chemical reactions; this is because in nuclear reactions, mass is converted to energy. Nuclear energy released in nuclear fission and fusion is several 100 million times as large as an ordinary chemical reaction like the combustion process. The reason why nuclear energy release so much energy is because tremendous amounts of energy is released at one time. The nuclei in a nuclear reaction undergo a chain reaction, causing the neutrons to move extremely fast and release high amounts of energy. 
3 0
4 years ago
Read 2 more answers
Integrated Science- 8th grade science
padilas [110]

Answer:

A. a rigorously tested explanation

Explanation:

  • B. and D. are out - theories are not opinionated, they are factual
  • C. is out - not all theories are mathematical
  • A. is the best choice
3 0
3 years ago
Read 2 more answers
Pls help quickly
emmasim [6.3K]

Answer: frosted glass

Explanation:

8 0
3 years ago
Read 2 more answers
Where is energy being applied to the system?
Aleksandr-060686 [28]
Well i cant answer the first question due to absence of diagram
For the second queation, the energy affects the Frequency of wave, the higher the ebrgy the higher the frequency. Since frequency =1/Period,energy can also be said to alter the period. Since wave speed = Frequency *Wavelength, the speed is also increase due to increase in the frequency.
its amplitude increases too by the way.
3 0
4 years ago
Other questions:
  • You are pushing a 20-kg box along a horizontal floor. Friction acts on the box. When you apply a horizontal force of magnitude 4
    5·2 answers
  • If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result?
    12·2 answers
  • A father racing his son has half the kinetic energy of the son, whohas three-fifths the mass of the father. The father speeds up
    10·1 answer
  • When is orange is the new black episodes come out
    9·1 answer
  • after a circuit has been turned off, so it is important to make sure they are discharged before you touch them. Suppose a 120 mF
    5·1 answer
  • A ball is kicked horizontally, at 16.8 m/s, from the edge of a bridge over a smooth flowing river. It lands on the water at a di
    14·1 answer
  • An airplane traveling at 60 m/s comes to a stop in 10 seconds. Calculate the airplane’s acceleration. Show the appropriate formu
    12·2 answers
  • If someone has a special rank in brainly how do you feel
    11·2 answers
  • A butterfly rests on a leaf floating on the surface of a pond. The butterfly then starts moving to the tip of the leaf at a spee
    12·1 answer
  • What is the gravitational field strength
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!