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
Bumek [7]
3 years ago
15

A crane lifts an air conditioner to the top of a building. If the building is 12 m high, and the air conditioner has a mass of 2

00 kg, how much work did the crane do to lift it? (Hint: the force the crane exerts is equal to the weight of the air conditioner)
Physics
1 answer:
Ganezh [65]3 years ago
5 0

Work needed = 23,520 J

<h3> Further explanation </h3>

Given

height = 12 m

mass = 200 kg

Required

work needed by the crane

Solution

Work is the transfer of energy caused by the force acting on a moving object  

Work is the product of force with the displacement of objects.  

Can be formulated  

W = F x d  

W = Work, J, Nm  

F = Force, N  

d = distance, m  

F = m x g

Input the value :

W = mgd

W = 200 kg x 9.8 m/s²x12 m

W = 23520 J

You might be interested in
Why does pumping a soccer ball with an air pump increase the pressure inside the ball? the pump puts more gas particles inside t
Archy [21]

Answer:

The pump puts more gas particles inside the ball

Explanation:

7 0
3 years ago
Read 2 more answers
5 points
Tresset [83]

Answer:

\frac{{v}^{2} g}{2 }

8 0
2 years ago
1) Complète les phrases suivantes en remplaçant
Zepler [3.9K]

Answer:

si?

Explanation:

definition La myopie. L'oeil myope est trop long ou le cristallin trop convergent. L'image d'un objet à l'infini se forme en avant de la rétine. Le punctum remotum est ... i dont know sorry

7 0
3 years ago
A car travels 8km in 7 minutes. Find the speed of the car.
AleksandrR [38]

Answer:

42.6083 mi/h

Explanation:

Given: A car travels 8km in 7 minutes.

To find: Find the speed of the car.

Formula: Speed = \frac{Distance}{Time}

Solution: Since the formula for the speed of an object (which is the car) is speed = distance ÷ time, divide the distance (8km) by the time (7min)

Speed = 42.6083 miles per hour

3 0
2 years ago
The transmission of heat requiring the movement of a liquid or a gas is
AysviL [449]

Answer:

convection

Explanation:

7 0
3 years ago
Other questions:
  • **HELP ASAP**
    13·1 answer
  • On takeoff, the combined action of the engines and wings of an airplane exerts a(n) 7934 N force on the plane, directed upward a
    11·1 answer
  • A bus accelerated at 1.8 m/s2 from rest for 15 s. It then traveled at constant speed for 25 s, after which it slowed to a stop w
    15·1 answer
  • The pitch of a sound is most closely related to the what
    5·1 answer
  • A 0.250-kg ball is thrown upwards with an initial velocity of 12.0 m/s Determine the acceleration of the ball when it has reache
    6·1 answer
  • Two small masses that are 10.0 cm apart attract each other with a force of 10.0 N. When they are 5.0 cm apart, these masses will
    11·1 answer
  • The temperature of an ideal gas in a sealed 0.1 m3 container is reduced from 430 K to 270 K. The final pressure of the gas is 70
    11·1 answer
  • Cardiorespiratory fitness is most likely to improve due to which of the following types of exercise?
    10·2 answers
  • A change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening bending of waves around a bar
    10·1 answer
  • If three balls of different materials were dropped at the same time from the same height, which would hit the ground first? (Ass
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!