Which best explains why a firework being ignited is an example of an exothermic reaction and not an endothermic reaction?

The fireworks produce colors.
The fireworks give off heat.
Igniting the fireworks requires energy.
Igniting the fireworks makes an odor.

Answer:

B. Fireworks give off heat.

As the firework releases heat, it is considered as exothermic reaction. The correct option is B.

An exothermic reaction has been one in which the energy has been required to break bonds in the reactants has less than the energy released when the new bonds form in the products. Energy has been constantly released during an exothermic reaction, often in the form of heat. Exothermic reactions has been characterize all the combustion reactions.

Endothermic reactions has been known as the chemical reactions that produce products by absorbing heat energy from their surroundings. Exothermic reactions has been important in the forensic science, particularly in the investigation of the fires and explosions.

Endothermic has been refers to the chemical reaction that it requires heat and results in the cooling of the surroundings. As fireworks are the releasing energy in the form of the heat, it can be called as an exothermic reaction.

Therefore, As the firework releases heat, it is considered as exothermic reaction. The correct option is B.

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ASME gives several recommendations for lettering. Which one among the following list is not part of those considerations?

a
The minimum lettering size is .125mm on engineering drawings.
b
All dimension numerals, notes, and other lettered information should be the same height.
c
The spacing of letters in words should be such that the individual letters are uniformly spaced.
d
Notes should be lettered horizontally on the sheet.

You are developing a mind map for measuring the viscosity of fluid. At which stage in the process will you specify the equipment needed for the experiment?

Which of the following is an example of a "Engineering Control"?
A. Safety poster
B. Hard hat
C. Cover over a shock hazard on a machine
D. Steel toe boots

What is the measurement on this Dial Caliper?
A. 5.491
B. 4.044
C. 5.691

I WILL GIVE BRAINLIEST IF ANSWER FAST What is the measurement of this dial caliper?
A. 4.044 inches
B. 4.045 inches
C. 4.44 inches

Which option is an example of a physical model?
O A. A clay ball with a slice cut out, showing the layers of Earth
B. A graph of the relative thicknesses of Earth's layers
OC. A mental image of the solar system
O D. A computer weather map created by Doppler radar

Provide a brief defense of why the field of engineering is a great career path.

Scroll saw blades break
O very seldom
O when forcing the wood through the blade
O when dull​

PLEASE ANSWER THIS ASAP!

Which construction material can workers erect at the fastest rate?
____ is the fastest construction material to erect.

Potential eye injuries are one hazard of using GMAW equipment.

A) True B) False

I WILL GIVE BRAINLIEST IF ANSWER FAST What is the measurement on this Dial Caliper?
A. 5.491 inches
B. 4.044
C. 5.691

What is the measurement of this square?
A.075
B. 1.75
C. 0.34

I’m building a robot in class and I have to name it what should I name it

1. Thech bot ev3
2. Boop bot

What are the pros and cons of cooking with each type of heat source (solar vs fossil fuel)

As much as engineers try to avoid it, end-user problems are part of the process. You might have noticed that right after the latest smartphone comes out, there is a slew of articles pointing out what is not working properly with the phone. This is just one example of an end-user problem. Go online and find an example of an end-user problem. Describe the problem and how the company that created the problem plans to fix it. Include a link to the site where you found the information in your response.

Which risk is most closely associated with workers in construction engineering?
A.
risk of silicosis because of inhaling very minute silica particles
B.
risk of skin burns because of corrosive acids and alkalis
C.
risk of exposure to a fatal amount of electric current because of malfunctioning equipment
D.
risk of accidental exposure to radiation when handling radioactive elements

What is capillary action? A) The act of using a solvent to clean a car part B) The ability to get into small spaces and reduce friction points C) The adhesion of water molecules grabbing at the walls of a vessel, drawing the water upward even against the effects of gravity D) When water breaks down dirt without the use of soaps or other cleaners

Can someone do this for me Take picture of steps and result and send me link I did the other models but I’m struggling with this one I’ll do anything you want me to do I’ll do anything Plz I’m lost

A refrigerator operates on a average of 10 hours a day. If the power rating
of the fridge is 700 w how much electrical energy does the fridge use in one day

Why would the women in the following scenarios choose shoes made with totally different materials?
Deborah is a marathon runner who uses her running shoes in all weather during different times of the year. Marsha is a grandmother who wears her running shoes on warm days to play outside with her granddaughter.


Materials have specific properties that allow them to be useful in some situations and not in others.

Materials that are synthetic are not always favored by younger people.

Materials are not always sustainable and may undergo superficial changes.

Materials are being invented all the time and do not always meet a consumer’s specifications.

how are speed and acceleration related

What is the woodworking band saw used for?​

Which option supports the following scenario? Molly has always tried to use sustainable materials in her project designs. She is now designing a new children’s toy and must decide which materials to use. Most toys are made from plastic, but these are not usually recyclable. She knows the toy must be safe, chemical-free, and sturdy. She meets with her team to research other options.

PLZ HURRY IM ON A TIMER
Fran has a job involved with controlling the flow of oil through a series of pipelines at the refinery. As a part of his work, he needs to interpret diagrams, levels, and readings from gauges. He also needs to be ready with the appropriate procedures in case of an emergency.

Which career pathway does Fran most likely work in based on these tasks?

Energy Generation
Energy Transmission
Energy Distribution
Energy Transformation

Which of the following explains why civil engineers take courses that focus on understanding the forces involved in mechanical systems?

to test efficiency of energy usage
to create safe, stable structures
to design chips and circuit boards
to build effective communications systems

I NEED THIS DONE ASAP!!!!!! List 4 materials that would light up this light bulb when dropped onto the crocodile clips. In 1-2 sentences, describe why it caused the light to turn on using these 4 key terms: conductor, circuit, electrons, flow.

m+d=p+4=?
explain and answer ty

NEED HELP WILL MARK BRAINLEST!
What is the relationship between artificial satellites and astronomy?

Satellites are only used by astronomy employees of government agencies.
Satellites are only used by astronomy faculty for research.
Astronomers are dependent upon satellite technology.
Satellites are one type of technology used by astronomers for research.

After reading the following paragraph, what conclusion most accurately characterizes a police officer’s career?

After graduation from the police academy, some police agencies provide police training officer, or PTO, programs. PTO programs focus on many phases of training, each focusing on some aspect of the policing process. Problem-based learning, critical thinking, problem solving, and teamwork are also emphasized. Throughout a police officer’s career, training continues to occur. Called in-service training, this training helps to sharpen the officer’s skills and improve the quality of police work that an officer can provide to the community. Some of this training covers skills like firearms training or self-defense, but a wide choice of electives can be chosen, as well. These electives include computer and equipment skills, interview and interrogation skills, domestic violence, problem-solving skills. Most police agencies require that their officers participate in in-service training every year. Training can be tailored to the particular needs of the department’s officers, so that the skill set of each officer is developed to meet needs of the community.


A police officer will be given more legal jurisdiction over time

A police officer will be given more authority over time

A police officer will repeat many stages of training

A police officer will be engaged in lifelong learning and training

An engineer would like to create a new set of office supplies that are 100% recyclable. They will include staplers, pens, paper organizers, and computers. He would like to have preset molds to make just the frames of these items in mass bulk. Which of the following materials would be a good choice to begin exploring this project?


ceramics

metals

wood

glass