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
Lunna [17]
3 years ago
8

Which of these is an example of a chemical change?

Physics
2 answers:
nadya68 [22]3 years ago
6 0
1 - fireworks exploding
lora16 [44]3 years ago
3 0

Answer:

Fireworks Exploding

Explanation:

You might be interested in
A meter stick is place in a very high-speed spaceship. What length would the astronauts say the meter stick was? What would the
Marysya12 [62]

Answer:

a) The astronauts would see the real length of the meter stick, i.e.  L₀

b) The length of the meter stick as measured by the stationary observer will be L = L_{0} }{\sqrt{(1-(\frac{v}{c} )^{2}  } }

Explanation:

a) Let the proper length of the meter stick be L₀

The meter stick and the astronauts on the on the space ship are on the same moving frame, therefore, they will see the exact length of the meter stick, that is, L₀

b) A stationary observer watching the space ship and meter stick travel past them will see a contracted length of the meter stick

The original length = L₀

Let the speed of the space ship = v

The contracted length, L, is related to the original length in the frame of rest by

L = L₀/γ......................(1)

Where γ = \frac{1}{\sqrt{(1-(\frac{v}{c} )^{2}  } } ....................(2)

Substituting equation (2) into (1)

L = L_{0} }{\sqrt{(1-(\frac{v}{c} )^{2}  } }

4 0
3 years ago
A solution with a pH of 2.0 is
olya-2409 [2.1K]

a solution with a pH of 2.0 is strongly acidic

4 0
4 years ago
In triangle​ ABC, the angles A and B have the same​ measure, while the measure of angle C is 21degrees larger than the measure o
Lynna [10]
180 = 2x+x+21
159 = 3x
x = 53
Angle A = 53°
Angle B = 53°
Angle C = 53+21 = 74°
7 0
3 years ago
What happens to the electric potential energy of a negatively charged ion as it moves through the water from the negative probe
Nataly [62]

Answer:

Decreases.

Explanation:

Electric potential energy is the potential energy which is associated with the configuration of points charge in a system and it is the result of conservative coulomb force.

When the negatively charge ion is at the position of the negative probe than its potential energy is positive when it is move towards the positive probe it's potential energy becomes negative due to the negative ion.

Therefore, potential energy is decreases when negative charge ion moves through the water from negative probe to positive probe.

5 0
4 years ago
Copy of AL
tamaranim1 [39]

Answer:

I’m so sorry I tried solving it but I don’t understand it can you explain the question a little bit more ty

Explanation:

3 0
4 years ago
Other questions:
  • An electric toy with a resistance of 2.50 Ω is operated by a 3.00-V battery. (a) What current does the toy draw? (b) Assuming th
    11·1 answer
  • The following three hot samples have the same temperature. The same amount of heat is removed from each sample. Which one experi
    13·1 answer
  • What is the kinetic energy of a 1.00g hailstone falling at 8.50m/s
    13·1 answer
  • Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?
    6·2 answers
  • City A and City B are located far apart at the same latitude. City A has a much greater annual temperature range than City B. Th
    10·1 answer
  • During a storm, a car traveling on a level horizontal road comes upon a bridge that has washed out. The driver must get to the o
    14·1 answer
  • 1. The mass of an object on the Earth is 100. kg.
    15·1 answer
  • 5. Analyze When you use a
    14·1 answer
  • Any Acellus folk figure out the answer to this one??? I CANNOT for the life of me.
    8·1 answer
  • What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34 j •
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!