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
anastassius [24]
3 years ago
13

The second floor of a house is 6m above street level. How much work is reguired to lift a 300 kg refrigerator to the second stor

y?
Physics
1 answer:
zubka84 [21]3 years ago
8 0

Answer: 17.658kJ

Explanation:

The work done in lifting the refridgerator is given my

W = F.d

Where W = Work done, F = Force and d = distance/height to be covered by that force = 6m

But F = mg (this work is done against gravity)

Where m = mass of fridge and g = acceleration due to gravity.

F = 300kg × 9.81m/s^2

= 2943N

W = Fh (where h is the height to be scaled by the force)

W = 2943 × 6

W = 17658J

17.658kJ of work is needed to lift the refridgerator to a height of 6m

You might be interested in
Thing 1 and Thing 2 push with a force of 2000 N to move a rather small 500 kg elephant 30 m across the kitchen floor. How much w
Amanda [17]

Answer:

60000 J

Explanation:

Assuming the force is applied parallel to the displacement of the elephant, the work done to move it across the floor is

W=Fd

where

F = 2000 N is the force applied

d = 30 m is the displacement of the elephant

Substituting the numbers into the formula, we find

W=(2000 N)(30 m)=60,000 J

3 0
3 years ago
The food chain in question 1 is; Grass -> Deer -> Wolf
aleksklad [387]
Grass dear wolf is the right awnser
6 0
3 years ago
Many of the male characteristics come from which reproductive hormone?
motikmotik

Answer:

The answer is C. Testosterone.

Explanation:

Thats what make us a male.

8 0
2 years ago
From the Bohr Model diagram, assuming the atom is neutral, what element is represented by the diagram? A) Argon B) Chlorine Elim
viktelen [127]

The actual answer is B) Chlorine

According to the Bohr Model diagram, the atom has seventeen electrons. This makes it Chlorine.


Sorry if i'm late!!

5 0
3 years ago
Read 2 more answers
While hovering motionless 3.0 meters an asteroid, a small
AnnZ [28]
I have no idea what you are trying to ask sorry
4 0
3 years ago
Other questions:
  • Mathew, a farmer, cultivates monocultures of wheat. What negative effect will monoculture farming have on Mathew’s land? A. crop
    7·1 answer
  • A Car travel at a speed of 200 km/hr. How far it will go in 15 mins? 27.7 km 66.1 km7.70 km50.0 km8.33 km"
    15·1 answer
  • A girl at an airport rolls a ball north on a moving walking that moves east. If the ball’s speed with respect to the walkway is
    5·1 answer
  • What happens to the magnitude of the force of gravitation between two objects if: 1. distance between the objects is tripled? 2.
    12·2 answers
  • What are the density, specific gravity and mass of the air in a room whose dimensions are 4 m * 6 m * 8 m at 100 kPa and 25 C.
    6·1 answer
  • What are the two distinct ways in which energy moves outward from the solar core to photosphere?
    12·1 answer
  • Anna drew a diagram to compare the strong and weak force. Which labels belong in the areas marked X, Y, and Z? X: infinite range
    8·1 answer
  • Two clouds collide and form another, more massive cloud. One cloud is stationary, while the other is traveling at 1 m/s. After t
    9·1 answer
  • A car travels eastwards at 60km/h for 2h, then travels northwards at 20km/h for 8h. Find,
    13·1 answer
  • A 248 kg object moving at 19m/s comes to stop over a distance of 38 m. What is the coefficient of kinetic friction between the s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!