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
alisha [4.7K]
3 years ago
15

I’m just completely confused

Physics
1 answer:
Neporo4naja [7]3 years ago
6 0

4. It is substances

I don't know the 3rd one

Hope it helped you


You might be interested in
A bottle lying on the windowsill falls off and takes 4.95 seconds to reach the ground. The distance from the windowsill to the g
Liula [17]
The distance an object falls from rest through gravity is 
                        D  =  (1/2) (g) (t²) 
           Distance  =  (1/2 acceleration of gravity) x (square of the falling time)

We want to see how the time will be affected 
if  ' D ' doesn't change but ' g ' does. 
So I'm going to start by rearranging the equation
to solve for ' t '.                                                      D  =  (1/2) (g) (t²)

Multiply each side by  2 :         2 D  =            g    t²  

Divide each side by ' g ' :      2 D/g =                  t² 

Square root each side:        t = √ (2D/g)

Looking at the equation now, we can see what happens to ' t ' when only ' g ' changes:

  -- ' g ' is in the denominator; so bigger 'g' ==> shorter 't'

                                             and smaller 'g' ==> longer 't' .-- 

They don't change by the same factor, because  1/g  is inside the square root.  So 't' changes the same amount as  √1/g  does.

Gravity on the surface of the moon is roughly  1/6  the value of gravity on the surface of the Earth.

So we expect ' t ' to increase by  √6  =  2.45 times.

It would take the same bottle  (2.45 x 4.95) = 12.12 seconds to roll off the same window sill and fall 120 meters down to the surface of the Moon.
5 0
3 years ago
Beginning<br> lonic compounds are made up of a__<br> and a__
Romashka-Z-Leto [24]

Answer:

metal and non-metal

Explanation:

Ionic bonds are formed when a metal loses electrons and a non-metal gains said electrons.

3 0
3 years ago
Read 2 more answers
Which observation BEST supports evidence that two different species share a common ancestor? A) they both prey on the same anima
Anna [14]
The answer is definitely C
3 0
3 years ago
Read 2 more answers
Define Potential Difference ​
GarryVolchara [31]

Answer:

the difference of electrical potential between two points.

Explanation:

3 0
4 years ago
A person is filling a knee-high bucket with water using a garden hose and holding it such that water discharges from the hose at
Serggg [28]

Answer:

Yes i am agree with this suggestion

Explanation:

Given that we have to assume that there is no any frictional affects.

As we know that when height increases then the discharge level will decreases when discharge level decreases then the time of filling for the bucket will increase.So the  bucket will fill faster if the hose lowered until knee level.

Yes i am agree with this suggestion

8 0
3 years ago
Other questions:
  • A block with mass of 0.5 kg is forced against a horizontal spring of negligible mass. compressing the spring a distance of 0.20m
    8·2 answers
  • Describe the basis concept of the atwood’s machine
    11·1 answer
  • A particle executes simple harmonic motion with an amplitude of 2.18 cm.
    11·1 answer
  • The magnet has an unchanging magnetic field: very strong near the magnet, and weak far from the magnet. How did the magnetic fie
    9·1 answer
  • DO I JUST DRAW A SIMPLE WATER MOLECULE? Sketch a space filling model of a water molecule, show polarity by label positive and ne
    10·1 answer
  • (a) When the displacement in SHM is one-sixth the amplitude xm, what fraction of the total energy is kinetic energy? (b) What fr
    11·1 answer
  • What is the energy per photon absorbed during the transition from n = 2 to n = 3 in the hydrogen atom?
    15·1 answer
  • 7. A runner runs on the track field with a velocity of 20 m/s and it is known that her momentum is
    9·1 answer
  • A 36.3 kg cart has a velocity of 3 m/s. How much kinetic energy does the object have?
    5·1 answer
  • Hello people ~
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!