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
Andreas93 [3]
3 years ago
7

Is chalk a colloid, suspension, element, compound, or a mixture

Physics
1 answer:
Fittoniya [83]3 years ago
3 0
I think that chalk is a compound. it is made up of molecules containing one calcium atom ,one carbon atom and three oxygen atoms.
You might be interested in
When you are in the way of a moving object and a collision is sure to occur, you are better off decreasing its momentum over …?
BlackZzzverrR [31]
<span>When you are in the way of a moving object and a collision is sure to occur, you are better off decreasing its momentum over time. Which is nothing but force.
mv/t = m.a = F

Fill the blank as: "Time"

Hope this helps!</span>
7 0
3 years ago
In a certain time interval, natural gas with energy content of 19000 J was piped into a house during a winter day. In the same t
Tcecarenko [31]

Answer:

The amount of heat transfer is 21,000J .

Explanation:

The equation form of thermodynamics is,

ΔQ=ΔU+W

Here, ΔQ is the heat transferred, ΔU is the change in internal energy, and W is the work done.

Substitute 0 J for W and 0 J for ΔU

ΔQ = 0J+0J

ΔQ = 0J

The change in internal energy is equal to zero because the temperature changes of the house didn’t change. The work done is zero because the volume did not change

The heat transfer is,

ΔQ=Q  (in ) −Q (out )

Substitute 19000 J + 2000 J for Q(in)  and 0 J for Q(out)

ΔQ=(19000J+2000J)−(0J)

=21,000J

​Thus, the amount of heat transfer is 21,000J .

​

8 0
3 years ago
Read 2 more answers
Please help I’ll give brainliest
marta [7]

Answer:

Repel

Unlike

Atrract

Fur

Balloon

Positivley charged

negative

postive

neutral

Explanation:

It goes from top to bottom

7 0
3 years ago
What is the speed of terminal velocity?
ivann1987 [24]
The so-called "terminal velocity" is the fastest that something can fall
through a fluid.  Even though there's a constant force pulling it through,
the friction or resistance of plowing through the surrounding substance
gets bigger as the speed grows, so there's some speed where the resistance
is equal to the pulling force, and then the falling object can't go any faster.

A few examples:
-- the terminal velocity of a sky-diver falling through air,
-- the terminal velocity of a pecan falling through honey,
-- the terminal velocity of a stone falling through water.

It's not possible to say that "the terminal velocity is ----- miles per hour".
If any of these things changes, then the terminal velocity changes too:

-- weight of the falling object
-- shape of the object
-- surface texture (smoothness) of the object
-- density of the surrounding fluid
-- viscosity of the surrounding fluid .
4 0
3 years ago
Class characteristics serve as corroboration for other, more subjective pieces of evidence in a courtroom (like witness testimon
Amiraneli [1.4K]

Answer: True

Explanation:

Class characteristics can be define as the features which are common to the group of objects. Like the make, model, label of the manufacturing company, design, shape and form. The individual characteristics can be define as the features which develop on the object or any other article with it's wear and use. Like tear, cuts, malformation and deposition of dust, dirt, and mud. The individual characteristic indicate towards the ownership of article or evidence to a particular person.

The class characteristics can only support the possibility of the evidence exactly alike that of the evidence found at the scene of crime. But the individual characteristics can directly link the evidence with the cause of crime. Hence, will be useful to prove that a crime has taken place in the court of law.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the difference between speed and velocity? A. Velocity takes acceleration into account, while speed does not. B. Speed t
    9·1 answer
  • Two charged concentric spherical shells have radii of 11.0 cm and 14.0 cm. The charge on the inner shell is 3.50 ✕ 10−8 C and th
    9·1 answer
  • A pair of opposite electric charges of equal magnitude is called a(n)
    5·2 answers
  • The rate at which correct flows is measured in _?
    7·1 answer
  • Seems knows the mass of a basketball what other information is needed to find the balls potential energy
    9·1 answer
  • A veterinarian thinks that a dog has swallowed a key ring. Which types of electromagnetic waves is the doctor most likely to use
    12·2 answers
  • Help uhh i need to know this answer
    12·1 answer
  • How much do you do when you stand by carrying 50 kg load bricks? write the reason​
    11·1 answer
  • A spring has a spring constant of 330 n/m. how far is the spring compressed when 150 newtons of force are used?
    10·1 answer
  • A block of copper of density 8.9g/cm3 measures 5 cm by 3 cm by 2 cm. Given that the force of gravity is 10N/kg-1, determine. a)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!