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3 years ago

What are the three main ideas associated with Newton's second law of motion

2 answers:

6 0

The three main ideas related to Newton’s Second Law are as follows :
1.Acceleration is the result of unbalanced forces.
2.A larger force makes a proportionally larger acceleration.
3.Acceleration is inversely proportional to mass.

Hope this helps!

Aleks [24]3 years ago

4 0

The proper way of using the meter stick is first place the meter stick against the object you wish to measure make sure that the end of the meter stick that has the lowest numbers (most start with 1 centimeter) should be your beginning point of measurement, and will be placed at the end of the object. Note how far up the object extends on the meter stick and finally record your measurement.

Percentage error is define as the percent difference is the absolute value of the difference over the mean times 100 while standard error or standard deviation of the mean is the sample standard deviation divided by the square root of the number of data points.

Hope my answer would be a great help for you.
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A student is getting ready to go on a bike ride, but her bike’s back tire is flat! She connects a pump to the valve and adds air

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Answer: The answer is B. Higher than.

Explanation:

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2 years ago

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4. The atmosphere is composed of about 78% nitrogen, 21% oxygen, and 1% argon. Typical atmospheric pressure in Boulder, Colorado

photoshop1234 [79]

ANS

Step 1 :Explanation of required formula.

According to Dalton's Law of Partial Pressures, the partial pressure of a component of a gaseous mixture depends on the mole ratio of said component and the total pressure of the gaseous mixture

i.e Pi=Xi × Ptotal,

Here we don't know exactly how many moles of the mixture we have,

but we know that 78.0% of all the molecules present in the mixture are nitrogen molecules, 21.0% are oxygen molecules, and 1% are molecules of Ar gas.

As we know, a mole is simply a very large collection of molecules. In order to have one mole of a substance, we need to have 6.022 × 1023 molecules of that substance.

This means that the actual number of moles is not important here, because the ratio that exists between the number of molecules is equivalent to the ratio that exists between the number of moles.

Hence,

Step 2 : Calculate of mole fraction of the mixture.

mole fraction of nitrogen = 78 /100 = 0.78

mole fraction of O2 =

21 /100 = 0.21

mole fraction of Argon =

1 /100 = 0.01.

Step 3 : Calculate the pressure contributed by each of the mixture.

The pressure contributed by N2 = mole fraction of N2 × Total pressure = 0.78 × 0.83 atm = 0.6474 atm

The pressure contributed by O2 = 0.21 × 0.83 atm = 0.1743 atm

The pressure contributed by N2 = 0.01 × 0.83 atm = 0.0083 atm.

Thank You !!!!!!

6 0

3 years ago

How much heat is absorbed by a 450g gold block as energy from the sun causes its temperature to change from 27°C to 32°C? (Speci

kotegsom [21]

Answer:

Q = 1057.5 [cal]

Explanation:

In order to solve this problem, we must use the following equation of thermal energy.

$Q=m*C_{p}*(T_{final}-T_{initial})$

where:

Q = heat energy [cal]

Cp = specific heat = 0.47 [cal/g*°C]

T_final = final temperature = 32 [°C]

T_initial = initial temperature = 27 [°C]

m = mass of the substance = 450 [g]

Now replacing:

$Q=450*0.47*(32-27)\\Q=1057.5[cal]$

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3 years ago

Physical values in the real world have two components: magnitude and

Nadusha1986 [10]

Answer:

Dimension.

Explanation:

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3 years ago

Football player A has a mass of 210 pounds and is running at a rate of 5.0mi/hr. He collides with player B. Player B has a mass

LuckyWell [14K]

The answer is b.) the momentum before the collision is greater than the momentum after the collision

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3 years ago

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