What is the resistance of an object to moving or to stoppingA. Gravity

B. Inertia

C. Gravitational Force

Answers

Answer 1

Answer: Inertia is the resistance of an object to moving or stopping

Answer 2

Answer: i believe the answer is C

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A 1.00-L bulb and a 1.50-L bulb, connected by a stopcock, are filled, respectively, with argon at 0.75 atm and helium at 1.20 atm at the same temperature. Calculate the total pressure and the partial pressures of each gas after the stopcock has been opened and the mole fraction of each gas. Assume ideal-gas behavior.

Answers

Answer:

Explanation:

If P₁(p) be the partial pressure of gas in first bulb then

P₁(p) (1 +1.5) = P₁V₁ = 1 X 0.75

P₁(p) = (1 / 2.5) x .75 = 0.3 atm

Similarly partial pressure of gas in second bulb

= ( 1.5 / 2.5) x 1.2 = .72 atm

Total pressure= .3 + .72 = 1.02 atms.

If n₁ and n₂ be their moles in the respective bulbs

P₁V₁ = n₁ R t

P₂ V₂ = n₂ R t

$(P_1V_1)/(P_2V_2) = (n_1)/(n_2)$

$(n_1)/(n_2+n_1 ) = (P_1V_1)/(P_1V_1+P_2V_2)$

mole fraction of argon = $(.75* 1)/(.75*1+1.2*1.5)$

= $(.75)/(2.55)$

= 15 / 51

Mole fraction of helium = 1 - 15 / 51 = 36 / 51

Answer:

The total pressure of the mixture is 1.02 atm.

Partial pressure of the argon : $p_(Ar)=0.30atm$

Partial pressure of the helium : $p_(He)=0.72atm$

Explanation:

Volume of argon in the bulb = $V_1$ = 1.00 L

Pressure of argon in the bulb = $P_1$ = 0.75 atm

Temperature of the both the gases = T

Moles of argon gases = $n_1$

$P_1V_1=n_1RT$ ..[1]

Volume of helium in the bulb = $V_2$ = 1.50 L

Pressure of helium in the bulb = $P_2$ = 1.20 atm

Moles of helium gases = $n_2$

$P_2V_2=n_2RT$ ..[2]

[1] ÷ [2]

$(P_1V_1)/(P_2V_2)=(n_1)/(n_2)$

$(n_1)/(n_2)=(0.75 atm* 1.00 L)/(1.20 atm* 1.50 L)$

$(n_1)/(n_2)=(5)/(12)$

$n_2=2.4* n_1$

After opening the stopcock, the gases are mixed.

The mole fraction of argon = $\chi_1=(n_1)/(n_1+n_2)$

$\chi_1=(n_1)/(n_1+2.4n_1)=0.2941$

The mole fraction of helium= $\chi_2=(n_2)/(n_1+n_2)$

$\chi_2=(2.4n_1)/(n_1+2.4n_1)=0.7059$

Volume of the mixture ,V= 1.00 L + 1.50 L =2.50 L

Total pressure in the mixture = P

Temperature is same = T

Total moles of gases in the mixtures = n

$PV=nRT$

$n=n_1+n_2$

$(PV)/(RT)=(P_1V_1)/(RT)+(P_1V_1)/(RT)$

$P* 2.50L=0.75 atm* 1.00 L+1.20 atm* 1.50 L$

$P* 2.50L=2.55 atm L$

$P=(2.55 atm L)/(2.50 L)=1.02 atm$

The total pressure of the mixture is 1.02 atm.

Partial pressure of the argon after mixing : $p_(Ar)$

$p_(Ar)=P* \chi_1=1.02* 0.2941=0.30 atm$

Partial pressure of the helium after mixing : $p_(He)$

$p_(He)=P* \chi_2=1.02* 0.7059=0.72 atm$

Masses in motion question 1 options: kinetics geophysics thermodynamics neurophysics

Answers

kinetics is the answer

Why are peer reviews important?a. Scientists receive questions and criticism from their peers.
b. Data are checked for accuracy.
c. Scientists receive comments and suggestions from other scientists.
d. all of the abve

Answers

peer review is important because it is used by scientists to decided which results should be published in a scientific journal

I would say the answer is D: All of the above

TIMED URGENT! REALLY APPRECIATE HELP!! TYSM!!!!!What is the average Speed of the roller coaster? *

20 meters per second
20 meters per minute
20 m/hr

Answers

Answer:

1st

Explanation:

20 meters per second

Explanation:

look at the chart

What is a statement that summarizes a pattern found in nature? A. a scientific law B. a fact C. a scientific theory D. a hypothesis

Answers

A Scientific law is a statement that summarizes a pattern found in nature.

Further Explanation:

A fact is a natural observation which remains the same for several repeated testing under the same circumstances. But a fact cannot be considered a law because it could be proven wrong at some point.

A scientific law is also a fact with a wider scope of being true as compared to a fact. An observation is categorised as a scientific law only when it is true in each and every condition and has a larger scope of being true.

A scientific theory is an explanation of a natural phenomenon based on the scientific law by several testing and observations. A scientific theory is not always true and it can change for a phenomenon based on the new evidences found.

A hypothesis is a mere prediction of a situation without any testing and observation. It is simply an idea behind any observation and it is yet to be tested whether it holds true for the condition or not.

Therefore, a scientific law is the one that explains the patterns and observed phenomenon in nature and holds true in every situation.

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Answer Details:

Grade: High School

Chapter: Scientific laws and theories

Subject: Physics

Keywords: Statement that summarizes, pattern found in nature, scientific law, scientific theory, fact, hypothesis, wider scope, always true.

A. scientific law is a statement that summarizes a pattern found in nature. It is describes an observed phenomenon and has predictive power: it can describe what will happen given a set of initial conditions. Often, a scientific law may be expressed as a mathematical equation.

FURTHER EXPLANATION

B. A fact is an observation that is found to be true by repeated testing. Unlike a scientific law, however, a fact has a level of uncertainty. It is only held true until they are proven false. They are also more specific and localized observations compared to scientific laws which are more general and broad in scope.

C. A scientific theory is an explanation for an observed phenomenon. It attempts to explain in detail why and how an observed phenomenon described by a scientific law happens. It is a hypothesis that has been confirmed through time by repeated testing and validation of the scientific community. However, a theory is not set in stone. When new evidence is found that refutes an existing theory, the theory may be changed or abandoned.

D. A hypothesis is a tentative prediction and explanation about the relationship between two variables – the dependent and independent variables. It is a basic idea and has not been tested yet but will soon be subjected to testing to check whether it holds merit based on the data. Hypotheses may be proven valid or not through testing and experimentation.

LEARN MORE

Scientific Method brainly.com/question/550083
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Keywords: scientific law, theory, fact, hypothesis

Explain why water boiling in a container stops
boiling momentarily when the lid is removed

Answers

Answer:

It's because it tips over the threshold from nucleate boiling, which we can see, to convection boiling, which we can't. ... Even if the steam stayed in the pot, it would still stop boiling when you removed the heat. The steam and water in a liquid/vapour mixture are at the same temperature (100ºC).

Explanation:

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