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
kati45 [8]
3 years ago
13

What does contact forces and non-contact forces mean?

Chemistry
1 answer:
Dmitrij [34]3 years ago
8 0
A contact force is a force in which and object comes in contact with a another object. A non-contact force, is a force is an object applied by another body. (A good example of a non-contact force is gravity)
You might be interested in
Give the number of significant figures in this number: 7.8 x 10¹²
denis-greek [22]
The number is written in scientific notation.


The significant figures are the numbers known precisely plus 1 digit that is uncertain.


When the numbers are expressed in scientific notation all the digits before  10^n are significant.


So, 7 and 8 are significant figures and the answer is that the number of significant figures is 2.


Answer: 2
8 0
3 years ago
In the lab vinegar acetic acid was mixed with baking soda sodium bicarbonate to form dioxide gas and sodium acetate. What are th
SpyIntel [72]

2CH3COOH +Na2CO3 ----> 2CH3COONa + H20 + CO2

know you can find what all products formed from his reaction

4 0
3 years ago
Which has a higher frequency, a neutron or electron? Why?
DanielleElmas [232]
The electron, due to the way an electron orbits the nucleus of an atom. 

According to Quantum Mechanics, electrons do not really orbit the nucleus of an atom. In fact, the most tightly bound state, the 1s orbital, has no angular momentum at all. This would be the state with the most "kinetic energy" and yet there is no "orbital" motion at all in this state.  
7 0
3 years ago
A snowflake contains 2.1 10^18 molecules of water. How many moles of water does it contain?
IgorC [24]

Answer:

divide the # of molecules by avogadros number and get 3.48 x 10^-6

Explanation:

6 0
2 years ago
A bowling ball is pushed with a force of 22.0 N and accelerates at 5.5 m/s^2 what is the mass of the bowling ball?
Kruka [31]

Data:

F (force) = 22.0 N

m (mass) = ? (in Kg)

a (acceleration) = 5.5 m/s²

We apply the data to the Resultant Force formula, we have:

4.0 kg

I hope this helps. =)

7 0
3 years ago
Other questions:
  • Why do quartz and glass both have very high melting points ?
    6·1 answer
  • There are 1.806×10^25 molecules of water. How many moles of water does the sample contain?
    8·1 answer
  • If 7.0 mol of NO and 5.0 mol of O2 are reacted tegethor. The reaction generates 3.0 mol of NO2. What is the percent yield for th
    9·1 answer
  • The millions of fossils that scientists have collected are called the fossil __.
    6·1 answer
  • An empty beaker weighs 39.09 g
    12·1 answer
  • Is air a mixture or pure substance ​
    12·1 answer
  • Which statement explains this observation?
    11·1 answer
  • A meteorite is
    6·1 answer
  • Large compounds that are composed of many smaller molecular subunits, most notably biochemicals are referred to as.
    5·1 answer
  • Answers for Chemistry A/Honors Chem A Unit 2 Test
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!