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raketka [301]
3 years ago
11

How many valence electrons do most stable atoms have?

Physics
1 answer:
IceJOKER [234]3 years ago
8 0

Answer:

D) 8

Explanation:

Due to the octet rule the most stable atoms will have 8 valence electrons.

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This physics problem is kinda complicated to my small brains...
Veronika [31]

Answer:

\huge\boxed{\sf P.E. = 14700\ Joules}

Explanation:

This work done is in the form of Potential Energy so we'll use the formula of Potential Energy.

<u>Given Data:</u>

Mass = m = 250 kg

Acceleration due to gravity = g = 9.8 m/s²

Height = h = 6 m

<u>Required:</u>

Work Done in the form of Potential Energy = P.E. = ?

<u>Formula:</u>

P.E. = mgh

<u>Solution:</u>

P.E. = (250)(9.8)(6)

P.E. = 14700 Joules

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
4 0
3 years ago
How can you measure the amplitude of a longitudinal wave
notsponge [240]

Answer:

In longitudinal waves, such as sound, the vibration is parallel to the propagation direction of the wave itself. These disturbances are due to the successive compressions of the medium, where the particles move back and forth in the same direction as the wave.

If we want to measure the amplitude of this type of wave we need to know the distance between particles of the medium that is being compresed by the perturbation. So, <em>the closer together the particles are, the greater the amplitude of the wave</em>.

3 0
3 years ago
A 1200 kg cannon fires a 100.0 kg cannonball at 52 m/s. What is the recoil velocity of the cannon? Assume that frictional forces
alina1380 [7]

Answer:

A) 4.3 m/s

Explanation:

M = mass of the cannon = 1200 kg

m = mass of the cannonball = 100 kg

v = speed of the cannonball after the fire = 52 m/s

V = speed of cannon after fire

Since the cannon and cannonball were at rest before fire, total initial momentum will be taken as 0

Using conservation of momentum

0 = m v - M V

M V = m v

inserting the values

(1200) V = (100) (52)

V = 4.3 m/s

8 0
3 years ago
Which statement about fossil fuels is false?
FromTheMoon [43]

The statement about fossil fuels is false is <u>C. They are dependent on location</u>, and the rest are relatively true

Further explanation

fossil fuels or mineral fuels are natural resources that contain hydrocarbons such as coal, petroleum, and natural gas. Fossil fuels are formed because of the natural process of decay from organisms that died hundreds of millions of years ago. Dinosaurs, trees, and almost all living things that died were deposited on the ground and now have become petroleum, natural gas, or coal. Natural gas has the form of gas, liquid petroleum, and solid coal. due to differences in the pressure and heat, they receive in the bowels of the earth over millions of years ago. Fossil fuels are a type of non-renewable natural resources. Because this fossil fuel is formed from the process of sedimentation and decomposition of living things and takes millions of years. That is why, the utilization of this fuel must be done wisely and responsibly, besides that the sources of fossil fuels that are available are faster used up compared to the formation of new ones.

There are 3 types of fossil fuels and all three have different shapes, which are

  • Natural gas has the form of gas.

natural gas is a fossil fuel in the form of gas. Natural gas is a mixture of hydrocarbons that has large expandability, high compressive strength, low specific gravity and naturally exists in the form of gas. Natural gas is collected underground with a variety of compositions contained in the oil content (associated gas).

  • Coal has a solid form.

Coal is a sedimentary rock that can burn. Formed from organic sediment and through the process of a forge. The main elements of coal are carbon, hydrogen, and oxygen. Coal is used as a raw material for making cement, steel, aluminum, and also as an energy source for power plants in several countries. In addition, there are many more benefits from coal. However, the wrong process in processing coal can have a negative impact on the environment. That is why many countries provide rules regarding the use of this coal.

  • Petroleum has a liquid form

Petroleum is the most widely used resource, both personally and industrially. Petroleum, which is still in raw condition, will go through several stages of processing until finally it becomes a finished product and is ready for use. Some processed petroleum products that are often used in daily life are gasoline, kerosene, and so on.

Learn More :

Fossil fuels : brainly.com/question/6950761, brainly.com/question/2029072

Details :

Class: Senior High

Subject: Physics

Keywords: Fossil fuels

7 0
3 years ago
How many grams of NaCl is required to saturate a solution at 90°C?
kakasveta [241]
The answer is going to be  40
4 0
3 years ago
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