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
vova2212 [387]
3 years ago
5

Plz help with dis science

Physics
1 answer:
grandymaker [24]3 years ago
8 0

I'll give you some of them, but I want you to promise to
look them up, either on line or in a book, and read more
about them, even after you have the answers.

This whole sheet is talking about the "states" of matter,
and changes between the states.

There are three "states" of matter: 
-- solid like ice
-- liquid like runny water
-- gas, like steam
 
1).  When a substance changes from one to another,
that's a "change of state".

2).  Which of these states has a definite shape and volume ?
(It doesn't make puddle, and it doesn't fill up the room. It's "solid".)


3).  You know this one.  What is it when ice changes to runny water ?

4).  Which state can you put into a jar, and it gets round like the jar
but it doesn't fill up the jar ?

5).  You know this.  What is it when runny water changes to ice ?

6).  Which state fills up anything you put it into ?

7).  I don't know this one.  It's either endothermic or exothermic.
I can never get these straight.

8).  Same as #6.  Which state fills up anything you put it into ?

9).  I don't know the term that includes both boiling and evaporation.

10).  This is the opposite of #7. 
As I said, I can never get these straight.

11).  Changing from a gas to a liquid, like steam to water,
or breathing fog onto a mirror, is "condensation".

12).  This is interesting.  If you have a lump of dry ice on the table
and it melts, there's no puddle around it !  It goes directly from solid
to carbon dioxide gas, and never forms liquid.  That process is called "sublimation", and we say that the dry ice "sublimes".

You might be interested in
A stone is thrown vertically upwards. It decelerates at a rate of 9.8m/s. It reaches a greatest
frez [133]

Answer:

18

Explanation:

brainiest pls

5 0
3 years ago
A baseball is thrown at an angle of 25 degrees, with a speed
Lana71 [14]

Answer:

vertical component = 9.7m/s

Explanation:

Vy= (23)sin25 = 9.7m/s

8 0
3 years ago
What often happens to light when it travels from one medium to another
quester [9]

Answer:

Although the speed changes and wavelength changes, the frequency of the light will be constant. The frequency, wavelength, and speed are related by: The change in speed that occurs when light passes from one medium to another is responsible for the bending of light, or refraction, that takes place at an interface.

Explanation:

3 0
3 years ago
Can someone help me with 1-2
ira [324]
Can't really plot a graph here for question 1.

2a) The car speeds up from A to B. The car travels at a constant speed from B to C. The car slows down to a stop from C to D.

b) From the graph, at 10 seconds, the car is moving at 20 m/s.
4 0
3 years ago
A 1640 kg merry-go-round with a radius of 7.50 m accelerates from rest to a rate of 1.00 revolution per 8.00 s. Estimate the mer
son4ous [18]

Solution :

Given data :

Mass of the merry-go-round, m= 1640 kg

Radius of the merry-go-round, r = 7.50 m

Angular speed, $\omega = \frac{1}{8}$  rev/sec

                             $=\frac{2 \pi \times 7.5}{8}$  rad/sec

                              = 5.89 rad/sec

Therefore, force required,

$F=m.\omega^2.r$

   $$=1640 \times (5.89)^2 \times 7.5  

   = 427126.9 N

Thus, the net work done for the acceleration is given by :

W = F x r

   = 427126.9 x 7.5

   = 3,203,451.75 J

6 0
3 years ago
Other questions:
  • 1.) Properties of a compound are_____the properties of the elements that make them up.
    15·1 answer
  • In a certain kinetics experiment, the enzymatically catalyzed hydrolysis of ATP proceeds at a constant rate of 2.0 µM•s–1. If th
    9·1 answer
  • You are leaving for a party at your cousin’s house in a city that is 150 km away. You will travel at an average rate of 50 km/hr
    12·2 answers
  • Wave energy can only be transmitted through a material medium. wave energy can only be transmitted through a material medium.
    5·1 answer
  • Our galaxy, the Milky Way, has a diameter of about 100,000 light years. How many years would it take a spacecraft to cross the g
    10·1 answer
  • This is heat or electrical transfer by contact.
    9·2 answers
  • Can someone help me match the words?
    13·1 answer
  • Need help ASAP!!!!!!!!!!!
    15·1 answer
  • A car which is traveling at a velocity of 27 m/s undergoes an acceleration of 5.5 m/s^2 over a distance of 430 m. How fast is it
    6·1 answer
  • . A certain sample of metal has a mass of 3 kg and a volume of 250 cm3. What is its density?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!