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
olya-2409 [2.1K]
2 years ago
10

A doorknob makes it easier for you to open doors because it is what type of simple machine?

Chemistry
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer: Wheel and Axle

Both of these work together to form a simple machine. You can't have one without the other.

If you try to turn just the axle itself, then you'll find it takes a lot of work. This is because the inertia of the axle wants to keep the object at rest. Also, you won't have a lot of torque due to the small radius compared to what a doorknob can offer.

Using a doorknob is like putting a (steering) wheel on an axle. This increases the radius and therefore increases the torque. You put in less work into the system and get more out of it.

You might be interested in
Please answer these about Charles law
NNADVOKAT [17]

Answer:

1. V2.

2. 299K.

3. 451K

4. 0.25 x 451 = V2 x 299

Explanation:

1. The data obtained from the question include:

Initial volume (V1) = 0.25mL

Initial temperature (T1) = 26°C

Final temperature (T2) = 178°C

Final volume (V2) =.?

2. Conversion from celsius to Kelvin temperature.

T(K) = T (°C) + 273

Initial temperature (T1) = 26°C

Initial temperature (T1) = 26°C + 273 = 299K

3. Conversion from celsius to Kelvin temperature.

T(K) = T (°C) + 273

Final temperature (T2) = 178°C

Final temperature (T1) = 178°C + 273 = 451K

4. Initial volume (V1) = 0.25mL

Initial temperature (T1) = 299K

Final temperature (T2) = 451K

Final volume (V2) =.?

V1 x T2 = V2 x T1

0.25 x 451 = V2 x 299

6 0
3 years ago
G vinegar is a solution of acetic acid in water. if a 165 ml bottle of distilled vinegar contains 28.2 ml of acetic acid, what i
Delicious77 [7]
<span>Volume Percent (volume/volume%) is defined to be the ratio of the volume of solute to the volume of solution times 100%. The acetic acid is the solute volume. The bottle of vinegar is the solution volume. Acetic acid (28.2ml) / Vinegar(165ml) x 100% = 17.1%</span>
7 0
3 years ago
A flask contains methane, chlorine and carbon monoxide gases. the partial pressures of each are 0.215 atm, 0.066 atm, and 0.826
hjlf

Answer;

The total pressure is 1.107 atm.

Explanation;

The total pressure is the sum of the pressures of the three gases in the flask

Pressure (total) = 0.215 atm + 0.066 atm + 0.826 atm = 1.107 atm

= 1.107 atm.

8 0
3 years ago
Read 2 more answers
Form of energy also known as light energy
Rzqust [24]
Atom enery is also one of them 
6 0
3 years ago
Read 2 more answers
What is the main reason that Absolute Zero has not been achieved under laboratory conditions?
Alexeev081 [22]

Answer:

The reason is because Charle's Law which states that volume is directly proportional to temperature. So, for the temperature to be absolute zero, there would need to be no volume. It's Impossible.

Explanation:

3 0
3 years ago
Other questions:
  • Which equation is used to help form the combined gas law?<br> eP, V, P, V, т.
    14·1 answer
  • The solvent is usually referred to as the component of a solution which is present as
    5·2 answers
  • A droplet of pure mercury has a density of 13.6 g/cm3. What is the density of a sample of pure mercury that is 10 times as large
    14·1 answer
  • Which is a combination of pollutants that mix with water vapor in a city or near large highways and factories?
    10·1 answer
  • If you sprayed an air freshener, where would the highest concentration of air freshener be found?
    5·1 answer
  • Which of the following experiments would best test viscosity?
    13·1 answer
  • NEED HELP!!!
    12·1 answer
  • How many grams of lithium hypochlorite are there in 1.35 mol?
    7·1 answer
  • What is the overall charge of an ion Pat has 12 protons 10 electrons and 14 neutrons
    7·1 answer
  • What happens to the temperatures when we have direct sunlight vs indirect sunlight?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!