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
irakobra [83]
3 years ago
15

What causes colour in fireworks

Physics
1 answer:
BigorU [14]3 years ago
8 0
<span>Inside each handmade firework are small packets filled with special chemicals, mainly metal salts and metal oxides, which react to produce an array of colors. </span>
You might be interested in
What do these weapon stats mean?
kaheart [24]

Answer:

its sort of like how Pounds are measured in lbs

Explanation:

Pounds are measured in lbs when they dont sound anything similar, same thing applies to gun technology.

5 0
3 years ago
An capacitor consists of two large parallel plates of area A separated by a very small distance d. This capacitor is connected t
scoundrel [369]

Answer:

Will be doubled.

Explanation:

For a capacitor of parallel plates of area A, separated by a distance d, such that the charges in the plates are Q and -Q, the capacitance is written as:

C = \frac{Q}{V}  = e_0\frac{A}{d}

where e₀ is a constant, the electric permittivity.

Now we can isolate V, the potential difference between the plates as:

V = \frac{Q}{e_0} *\frac{d}{A}

Now, notice that the separation between the plates is in the numerator.

Thus, if we double the distance we will get a new potential difference V', such that:

V' = \frac{Q}{e_0} *\frac{2d}{A} = 2*( \frac{Q}{e_0} *\frac{d}{A}) = 2*V\\V' = 2*V

So, if we double the distance between the plates, the potential difference will also be doubled.

6 0
3 years ago
Your friend says that for a moving object to continue moving, a force must be continually applied to it. Do you agree with your
Zigmanuir [339]

Answer:

I would disagree with my friend because that according to Newton's first law, an object in motion will continue to be in motion until stopped by another object/force. If the object is already moving, it will stay in motion until something else stops it. There is no need for a force to be <em>continually</em> applied to it while it's already moving.

4 0
2 years ago
Suppose you average 75 MPH over the first halfof a drive, and your average speed for the entiredrive is 60 MPH. What was your av
alexandr402 [8]

Answer:

x = 45 MPH

Explanation:

given,

Average speed of the first half = 75 MPH

Average speed of entire ride = 60 MPH

Average speed of the second half = ?

let the average speed of the second half = x MPH

now,

average of entire ride is given as 60 mph so,

 \dfrac{75+x}{2} = 60

 75+x= 2\times 60

       75 + x = 120

         x = 120 -75

        x = 45 MPH

hence, the average speed of the second half comes out to be 45 MPH.

5 0
4 years ago
An Arrow (0.5 kg) travels with velocity 60 m/s to the right when it pierces an apple (1 kg) which is initially at rest. After th
Rom4ik [11]

Answer:

Velocity after collision will be 20 m/sec

Explanation:

We have given mass of arrow m_1=0.5kg

Mass of arrow v_1=60m/sec

Mass of apple m_2=1kg

Apple is at rest so velocity of apple v_2=0m/sec

According to conservation of momentum

Momentum before collision is equal to momentum after collision

m_1v_1+m_2v_2=(m_1+m_2)v

0.5\times 60+1\times 0=(0.5+1)v

1.5v=30

v = 20 m/sec

5 0
3 years ago
Other questions:
  • Sunlight shines through a window. What happens to most of the light that strikes the window?
    15·1 answer
  • PLEASE HELP An object is thrown upward with an initial velocity of 32.1 m/s. What is its velocity in 4.0 s? (use g = 9.81 m/s2).
    7·1 answer
  • 1.A little girl kicks a soccer ball. It goes 10 feet and comes back to her. How is this possible?
    14·2 answers
  • Guys I really need help with these 2 questions , it's for my final plz help asap
    11·1 answer
  • Albert's laboratory is filled with a constant uniform magnetic field pointing straight up. Albert throws some charges into this
    5·1 answer
  • A pinball launcher is a spring with spring constant k = 65.0 N/m. It is compressed a distance of 8.00 cm and a ball of mass 0.10
    7·1 answer
  • Please answer this to the best of your ability<br><br>Don't send links, please
    6·2 answers
  • A wheel rotates about a fixed axis with an initial angular velocity of 24 rad/s. During a 4 s interval the angular velocity decr
    9·1 answer
  • What are the similarities between a food web and a food chain? (I need three)
    15·1 answer
  • A 215 N box is placed on an inclined plane that makes a 35.0 degree angle with the horizontal.  What applied force is needed to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!