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Olenka [21]
3 years ago
8

What types of energy are produced during firework displays?

Physics
2 answers:
-Dominant- [34]3 years ago
8 0

Answer: The chemical energy is converted to heat, light ,sound and kinematic movements.

Explanation:

An exploding firework is essentially a number of chemical reactions happening simultaneously or in rapid sequence. When you add some heat, you provide enough activation energy (the energy that kick-starts a chemical reaction) to make solid chemical compounds packed inside the firework combust (burn) with oxygen in the air and convert themselves into other chemicals, releasing smoke and exhaust gases such as carbon dioxide, carbon monoxide, and nitrogen in the process. For example, this is an example of one of the chemical reactions that might happen when the main gunpowder charge burn.

some of the chemical energylocked inside them is converted into four other kinds of energy (heat, light, sound, and the kinetic energy of movement). According to a basic law of physics called the conservation of energy.

bekas [8.4K]3 years ago
8 0

Answer:

Heat, Light and Sound.

Explanation:

There are 3 forms of energy generated by fireworks. They are:

Sound: Some fireworks produce a crackling sound while others creating an explosive sound.

Light: When fireworks explode, we see a bright light emitted from the explosion.

Heat: The explosive sound heard from fireworks are due to a quick release of energy at the surface of the fireworks.

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Rzqust [24]

3x + 1 ≤ 1

Subtract 1 from each side:  3x ≤ 0

Divide each side by  3 :     <em>x ≤ 0</em>

8 0
3 years ago
A Jamaican Bobsled team hits the brakes on their sled so that decelerates at a uniform rate of 0.43 m/s^2. How long does it take
ankoles [38]

Answer:

20.05 seconds

Explanation:

Given that:

v² = u² + 2as

v = final velocity

u = initial velocity

a = acceleration

s = distance

a = negative acceleration = - 0.43

s = distance = 86.5

v = 0

0 - 2(0.43)(86.5) = u²

74.39 = v²

U = sqrt(74.39)

U = 8.6249

From ;

t = Time in seconds

t = (v - u) / a

t = (0 - 8.6249) / - 0.43

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6 0
3 years ago
A constant net torque is exerted on an object. Which of the following quantities for the object cannot be constant? (Select all
prohojiy [21]

Answer:

A. kinetic energy

B. angular velocity

E. angular position

Explanation:

The quantities that cannot be constant if a constant net torque is exerted on an objecta are:

A. Kinetic energy. If a torque is applied, the linear or angular speed will be changing at a rate proportional to the torque, so the kinetic energy will change too.

B. Angular velocity. It will change at a rate equal to the torque.

C. Angular position. If the angular velocity changes, the angular position will change.

3 0
4 years ago
A bicyclist travels due east 60.0 km in 3.5 hours. What is the cyclist average speed?
Nezavi [6.7K]
If it is average speed per hour, then you just have to divide 3.5 into 60
60/3.5 = 17.143 so around 17km/h
7 0
3 years ago
A planet has a circular orbit around a star. It is a distance of 53,000,000 km from the centre of the star.
Kipish [7]

Answer:

it takes 365 days to revolve around the star(sun)

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