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
notsponge [240]
3 years ago
10

You and your friends are building a treehouse, and you need a machine to get a heavy load of wood from the ground to the top of

the tree. You set up a pulley system that allows you to pull down on the rope to lift the wood. What type of pulley system was this and how did it make work easier?
Question 9 options:


fixed pulley by changing the direction of input force.


movable pulley by decreasing input force but not the direction.
Chemistry
1 answer:
11111nata11111 [884]3 years ago
4 0

Machines are systems that are built to carry out a certain function or work. These are classified as: Simple and Compound Machines.

Simple machines are simple tools used to accomplish a certain task. These include lever, pulley, inclined plane atc. In contrast compound machines are a combination of simple machines.

In the given scenario, a pulley system was used to carry the wood from the bottom to the tree top. This is a movable pulley system which is directly attached to the load and works by decreasing the input force but not the direction.

You might be interested in
Is the capacity to do work or to produce heat.
antiseptic1488 [7]

Answer:

Energy is the ability to do work or to produce heat.

5 0
3 years ago
An ice cube melts to become water in a cup. how will the ice cube and the water be the same?
kenny6666 [7]
They will stay the same through the laws of conservation of mass even when they have changed state so they will have the reactant of Ice will be the same amount as the product of water   
6 0
3 years ago
When 8.00x10^22 molecules of ammonia react with 7.00x10^22 molecules of oxygen according to the chemical equation shown below, h
Pavel [41]
NH₃:

N = 8*10²²
NA = 6.02*10²³

n = N/NA = 8*10²²/6.02*10²³ ≈ 1.33*10⁻¹=0.133mol

O₂:

N=7*10²²
NA = 6.02*10²³

n = N/NA = 7*10²²/6.02*10²³ = 1.16*10⁻¹=0.116mol

4NH₃                   <span>+                        3O</span>₂                      ⇒<span>          2N</span>₂<span> + 6H</span>₂<span>O
</span>4mol                     :                        3mol                   :             2mol
0.133mol             :                        0.116mol           :             0,0665mol
limiting reactant

N₂:

n = 0.0665mol
M = 28g/mol

m = n*M = 0.0665mol*28g/mol = <u>1,862g</u>
6 0
3 years ago
What is the density of a plastic ball that has a volume of 6cm) and a mass of 12g?<br> 50 cm3
marissa [1.9K]

Answer:

2 g/cm³

Explanation:

4 0
2 years ago
Compare the diameter of the moon to the diameter of the Earth
hichkok12 [17]

Answer:

Ok Hold up. I will answer after I think of question

Explanation:

6 0
3 years ago
Other questions:
  • A 10.00 mL sample of 8.50 M HNO3 solution is diluted to a new volume of 65.0 mL. What is the concentration of the dilute solutio
    15·1 answer
  • What are the three things chloroplasts needs in order to complete photosynthesis?
    13·1 answer
  • A student placed 15.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
    9·1 answer
  • What is the valency of Al2O3 and why?
    14·1 answer
  • Anthracite is so hard and pure it is also referred to as a _____.
    10·1 answer
  • What are the effects of the<br> collision forces when objects<br> of the same mass collide?
    12·1 answer
  • You need 300 ml of a 75% alcohol solution. on hand, you have a 10% alcohol mixture and a 85% alcohol mixture. how much of each m
    11·1 answer
  • How many grams of salt are in 5 L of a solution with a concentration of 3 g/L
    8·1 answer
  • What is the empirical formula of vitamin A ( C=83.85, H=10.56, O=5.58)<br>​
    11·1 answer
  • What type of elements form ionic bonds with metals
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!