Physics Middle School

What is a unit for gas particle pressure? (Choose all that apply)
torr
kPa
mm Hg
atm

Answers

Answer 1

Answer:

The SI unit of pressure is the pascal (Pa), which is equal to one Newton per meter squared (N/m2).

Explanation:

Answer 2

Answer:

All of them are correct

Explanation:

Related Questions

In the periodic table, the most reactive metals are found a. in Group 1, the first column on the left. b. in Period 1, the first row across the top. c. in Groups 13 through 16 in the center. d. in Periods 6 and 7 at the bottom.

Answers

Answer:

Group 1

Explanation:

The alkali metals are the most reactive metals found on the periodic table

In a periodic table, the most reactive metals are found in Group 1, the first column on the left. (option a)

The most reactive metals are found in Group 1, which is the first column on the left side of the periodic table. Group 1 is also known as the alkali metals. These metals include elements like lithium (Li), sodium (Na), and potassium (K). Alkali metals are highly reactive because they have only one electron in their outermost energy level.

This means they are eager to lose that electron and achieve a stable electron configuration, which makes them more likely to engage in chemical reactions.

As we move down Group 1, the reactivity increases because the outermost electron is farther from the positively charged nucleus, making it easier to lose.

Hence the correct option is (a).

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The forces exerted on an object are shown. A box has an arrow pointing right labeled F shown and an arrow pointing left labeled 8 N. If the object moves left, which statement is correct about force F?

Answers

Answer:

force F is weaker than force N

Answer:

its less then 8 N :)

What is the name of the system that standardizes measurements in science

Answers

Explanation:

the international system of unit of the aside from the branch system International is a unit is is the metric system used in Sin industries and medicine

Answer:

Metric system

Explanation:

Also known as SI system

Make a list of twenty things in your home that are things you need. These should be things related to supplying you with warmth, food, and shelter

Answers

Water, firewood, clothing, food are just a few hope I helped :))

Answer: If in some sort of survival situation this might be of some help if its not then im not sure

1. Fire starter it is always handy to keep some sort of object that can help with warmth like a lighter matches or flint

2. A first aid kit would also be extremely helpful in case of injury it carries multiple different types of ways to clean a wound and bandage it properly

3. a Compas map or some sort of navigational device would be helpful in case you got lost

4. A phone or any way of communication would be helpful

5. Layers of clothing would be great or some sort of clothing fit for the climate you are in warm insalated clothing for winter and light clothing for heat

6. Rope or cords can be used for many things in the wild much like traps keeping your items or food off of the ground at out of the reach of animals

7. Water carrier and or any sort of water filtration device it is best to keep you from getting dehydrated.

8. A light source like a flashlight  

9. Bug spray most insects can carry diseases like mosquitos and malaria

10. Any sort of survival knife bone saw or machete anything that can cut up animals or wooded areas are very helpful

11. Blankets they are very useful in keeping you warm out in the elements

12. Tarps they are best at keeping things dry

13. Batteries and charging devices are also very helpful

14. weapons like guns bow and arrows or knives are also useful

15. Burnable materials like paper cloth and such are useful for starting fires

16. meat is a very good source of protein and can be used to help keep the calorie intake for your body steady

17. berries are good for the sugar intake and as well as the jucie and water stored inside

18.  beans are highly nutriocis they hold calcium and iron and can be dried up and stored for later needs

19. Fish it has omega-3 fatty acids which are healthy for your heart and it is high in vitamin b-12

20. oats they lower cholesterol levels and carries essential vitamins needed to keep the body healthy

Which would increase the rate of dissolving salt into water? low temperature little to no agitation more surface area darker colors

Answers

Answer:

the answer is more surface area

Explanation:

i took the quiz and got it right

More surface area will help to increase the rate of dissolving salt in water.

What is dissolution?

Dissolution is a process in which a substance is dissolved totally in a solvent or water. It is a process solute dissolve in solvent.

Therefore, More surface area will help to increase the rate of dissolving salt in water.

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The forced exerted on an object are shown. If the object moves right, which of the following is a possible value of F? Ignore my answer please help.

Answers

Answer:

5N

Explanation:

Because if it moves to the right, that means F is weak and 6N is STRONK

5N.....................

A parking lot is going to be 40 m wide and 100 m long. Which dimensions
could be used for a scale model of the lot?
A. 10 cm x 25 cm
B. 100 cm x 300 m
O C. 75 in x 225 cm
D. 25 cm x 75 cm


Answers

Answer: A

Explanation: You need to find the dimensions of the scale model of the lot that can be multiplied equally to get the original length. Basically 40 m and 100 m need to be divided by the same number to make the scale model evenly, and right off the bat you see that 10 and 25 could be multiplied by 4 and equal the original numbers. Hope this helps! Also sorry if it was kinda hard to understand lol, when i explain things its hard to get out of my own head ;P
answer is A. 10cm by 25 cm

Our data for how much force is needed can be qualitative. This means we don’t have to know exact values for the force in Newtons. Let’s use a scale of 1-5 to rank how much force we apply each time.

6. How many different masses should we use?

How many trials should we do for each mass?

Answers

Answer:

For macroscopic objects, we use units such as grams and kilograms to state their masses, but. There will not be much error if you estimate the mass of an atom by simply. to what we did for our hypothetical example, but the percentages are different: Add two atomic masses of carbon and six atomic masses of hydrogen:

Explanation:

What converts organic remains into fossil fuels? 1.chemical reaction 2water 3.heat and pressure

Answers

Answer:

Heat and pressure

Explanation:

Pressure and heat I took the quiz

What has to happen for these atoms/molecules to change from one state of matter to another? *view attachment*

Answers

Answer:Thermal energy is added or transferred

Explanation:

The answer is the third option

What is the relationship between an experiment and a hypothesis?
A. An experiment should be designed so that the hypothesis is
proven to be true.

B. A well-designed experiment is one that can test a number of
different hypotheses.
O C. A useful hypothesis is one that can guide the design of an
experiment.
O D. A hypothesis is an educated guess as to the outcome of an
experiment.

Answers

The answer is C. After observing, you make a hypothesis, THEN you expierement to either support or unsupport your hypothesis

A useful hypothesis is one that can guide the design of an experiment. The correct option is C.

What are an experiment and hypothesis?

It is possible to create fresh hypotheses and experiments that more closely match the results of the initial studies' observations. A hypothesis is formulated to explain an observation, and an experiment is created to test it. The experiment's findings might or might not support the hypothesis.

Negative results do not necessarily imply that the hypothesis is invalid. It implies that there must be another connection between the variables. To accomplish this, a new theory and experiment must be created in order to better account for the observations.

Therefore, a useful hypothesis is one that can guide the design of an experiment. The correct option is C.

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Help please! Science!

Answers

Answer:

My best guess is B. Sorry if I couldn't be of more help but that is the most likely answer.

My request: Please leave a follow, it would help a lot!

It’s b!! thermal energy has very free molecules

What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen

Answers

Answer:

fossil fuels are composed of Carbon.

Answer: Carbon

Explanation:

Matter is all around us and is made of atoms. How are atoms of different elements different from each other? How do these differences relate to their properties? HEYALPPP

Answers

Normally, the number of electrons is equal to the number of protons, which makes atoms electrically neutral. The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number.

A scientist adds different amounts of salt to 5 bottles of water. She then
measures how long it takes for the water to boil. What is the responding
variable in this experiment?

A. The time it takes for the water to boil

B. The amount of salt added to the water

C. The kind of bottles used

D. The brand of salt used

Answers

A. the time it take for the water to boil
that’s what i got

In the experiment, the variable is the time taken for the water to boil and the dependent upon the amount of salt added to the solution. Thus, the correct option is A.

What is the boiling point of water?

The boiling point of a substance is the temperature at which the vapor pressure of a liquid is equal to the pressure surrounding the liquid and the liquid changes into a vapor into the atmosphere.

The boiling point of a liquid varies depending upon the surrounding environmental pressure of the liquid. A liquid in a partial vacuum has a lower boiling point than the liquid at atmospheric pressure.

By adding a substance in a pure water sample, the boiling temperature of the pure water is elevated. In this experiment, the dependent variable is the amount of time it takes for the water to boil and the variable is dependent because it is dependent on the amount of salt added to the water sample.

Therefore, the correct option is A.

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