Answer:
Qualitative research can identify key variables in which regards as findings. Such findings may put into a conceptual framework or a research framework, later stage, that research framework can be tested via various statistical methods such as correlation, structural equation modelling ect. Because, qualitative research do not prove any significant relationship among variables, but quantitative research do. However, based on data gathered in qualitative research, the researcher can show that there may have some relationships among variables through graphically or by using NVivo qualitative data analysis software.
Explanation:
creds to Roshan Panditharathna
You can determine the qualitative relationship that may exist in data because qualitative describes key qualities and characteristics using questionnaires, observation or interviews. On the other hand quantitative relationships are based off of numbers and are collected using graphs and charts.
Give an example where the vectorial nature of velocity would be important when solving a problem.
Answer:
There are instances when the vectorial component or nature are important in solving problems.
Explanation:
The directional component of the velocity vector might become very important in some situations
Velocity problems involving topography; whether the velocity situation involves uphill or downhill for instance would have significant impact on the equation being solved, as deceleration or acceleration might occur, which would affect the velocity.
The resultant velocity of the boat and the river can be calculated by the application of vector diagram resulting to Pythagorean's theorem.
Velocity is a distance travelled in a specific direction per time taken. Velocity is a vector quantity and some questions involving velocity can be solved vectorially.
An example where the vectoral nature of velocity would be important when solving a problem will be a scenario where a boat is moving perpendicularly across a flowing river of high current.
Let assume that the river is flowing in west - east direction with a certain velocity. And the boat is moving across the river in north - south direction with a specific velocity.
The resultant velocity of the boat and the river can be calculated by the application of vector diagram resulting to Pythagorean's theorem.
Therefore, the vectoral nature of velocity will be important when solving a resultant velocity problem of a boat crossing a flowing river.
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Planet A has a gravitational field strength of 8.0 N/kg near its surface.
Planet B has three times the mass of Planet A and is half of its size.
What would be the gravitational field strength of planet B near its surface?
Answer: 96 N/kg
Explanation:
approximately 72 billion liters of milk are produced each year in the united states, from 8 million cows. on average, a single cow consumes 13,500 kg of corn feed each year. it requires 40 mj to produce a kilogram of corn feed, which contains 20 mj of energy. there are 15 mj of energy in a single liter of milk.
The energy efficiency of growing corn converted to milk is 50 percent corn efficiency produce 50 percent milk efficiency
Given data
annual milk production = 72 billion liters from 8 million cows
annual milk production = 72 billion liters / 8 million cows
annual milk production = 9000 liters / cow per annum
On average, a single cow consumes 13,500 kg of corn feed each year
40 MJ to produce a kilogram of corn feed, which contains 20 MJ of energy
15 MJ of energy in a single liter of milk
How to solve for energy efficiency of growing corn and converting it to milkEnergy efficiency of corn = energy output / energy input * 100
energy output = 20MJ
energy output = 40MJ
Energy efficiency of corn = 20 / 40 * 100
Energy efficiency of corn = 50 %
Energy efficiency of milk = energy output / energy input * 100
energy output = 13,500 * 20 = 270 000
energy output = 9000 * 15 = 135 000
Energy efficiency of milk = 135 000 / 270 000 * 100
Energy efficiency of milk = 50 %
Therefore 50 percent corn efficiency produce 50 percent milk efficiency
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complete question
Approximately 72 billion liters of milk are produced each year in the United States, from 8 million cows. On average, a single cow consumes 13,500 kg of corn feed each year. It requires 40 MJ to produce a kilogram of corn feed, which contains 20 MJ of energy. There are 15 MJ of energy in a single liter of milk.
1. Calculate the energy efficiency of growing corn and converting it to milk
If you can run a distance of 400 mi in 8 h, what is your average speed?
(1) astronomers have inherited many useful concepts from antiquity. (2) for example, ancient mathematicians invented angles and a system of angular measure that is still used to denote the positions and apparent sizes of objects in the sky. (3) when we locate stars, we don’t need to know their distances from earth (which are all different). (4) all we need to know is the angle from one star to another in the sky, a property that remains fixed over our lifetimes. (neil f. comins and william j. kaufmann iii, discovering the universe) sentence 2 can best be described as a
The reading of the given passage on astronomy gives;
Sentence (2) is the major supporting detailHow can the parts of the passage be identified?Sentence (1) is the main idea or background statement with regards to astronomy, with regards to the sources of concepts being used in astronomy. It conveys the subject matter of passage.
Sentence (2) gives more light to the statement of sentence (1). It gives the supporting details of the concepts astronomers inherited from antiquity, by outlining them; (angles and angular measure system used locate stellar objects), while sentence (4) gives a little information with regards to the use of angular system.
Therefore;
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If it took you 12 seconds to walk 36 meters, what is your velocity?
a
3 m/s
12 m/s
с
432 m/s
d
36 m/s
HEN
Answer:
3 m/s
Explanation:
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Your speed is (36m)/(12sec).
That's 3 m/s. (Choice-A)
There's not enough information to determine your velocity.
100 pointed and brainiest.
Which structural damage could be expected if a Category 3 hurricane is predicted to hit an area?(1 point)
Well-built framed homes could sustain severe damage, with loss of most of the roof structure and some exterior walls.
Well-constructed frame homes could have damage to the roof, shingles, vinyl siding, and gutters.
A high percentage of framed homes could be destroyed, with total roof failure and wall collapse.
Well-built framed homes could incur major damage or removal of roof decking and gable ends.
Answer:
damage to a house and trees posibly
Answer:
Which structural damage might be expected if a Category 1 hurricane is predicted to hit an area?
Responses
A high percentage of framed homes could be destroyed, with total roof failure and wall collapse.
A high percentage of framed homes could be destroyed, with total roof failure and wall collapse.
ANSWER : ( Well-constructed frame homes could have damage to the roof, shingles, and vinyl siding.
Explanation: i did the quiz it was easy
A glider is initially moving at a constant height of 3.72 m. It is suddenly subject to a wind such that its velocity at a later time t can be described by the equation v(t) = 16.02i − 7.96(1 + t)j + 0.76t3k, where v and its components are in meters per second, t is in seconds, and the z axis is perpendicular to the level ground. (a) What was the initial velocity of the glider? (Express your answer in vector form.)
Answer:
[tex]17.89\ \text{m/s}[/tex]
Explanation:
Velocity is given by
[tex]v(t) = 16.02\hat{i}-7.96(1 + t)\hat{j} + 0.76t^3\hat{k}[/tex]
Initial velocity is asked so t = 0
[tex]v(0)=16.02\hat{i}-7.96(1+t)\hat{j}+0.76\times 0\hat{k}\\\Rightarrow v(0)=16.02\hat{i}-7.96\hat{j}[/tex]
Magnitude is given by
[tex]|v|=\sqrt{16.02^2+(-7.96)^2}\\\Rightarrow |v|=17.89\ \text{m/s}[/tex]
The initial velocity of the glider was [tex]17.89\ \text{m/s}[/tex].
Science: Please help due in 5 minutes...
Answer:
fossil fuels are petroleum and natural gas. Well Fossils are mineralized remains of ancient plants and animals
what is kinetics force
Answer:
Explanation:
Kinetic force is the force caused kinetic energy. Kinetic energy is energy this is in movement such as a moving car or a falling rock.
A 450 N trunk rests on a 30 degree inclined plane. What is the force acting down the
plane (parallel force)?
Answer: What is the force acting down the plane?
• Opp= hyp (sinq)= 450(sin30)= 225 N
• What is the force acting perpendicular to the plane?
• adj= hyp (cosq)= 450(cos30)= 390 N
Explanation:
20.0 m [N] - 15 m [S20degreesE]
Answer:
thank for making me give up on life
Explanation:
I thought the stuff I had was hard wth is even that
How to brought people or myself out of sadness?
Answer:
appreciate things u have
find happiness in things
Explanation:
I hope this helps u!
Why does precipitation
occur when warm air rises?
Answer:
the warm air rises, cools and condenses to form clouds
Use the law of conservation of energy (assume no friction nor air resistance) to determine the kinetic and potential energy at the various marked positions along the roller coaster track below: KE= ME PER KE PE=20 000J KE=25 000J PE= mgh PE=_ KE= KE KE=OJ PE-7 500J PE=5 000J PE- D Ε. Voc KE=/m 12 KE- PEN KE=_ PE=__ KE=40 000J PE=OJ What is the total mechanical energy of the roller coaster throughout the ride? Explain how you determined ME.
Answer:
Part A
1) At the starting point, we have;
PE = 40,000 J
2) PE = 0 J, KE = 40,000 J
3) KE = 20,000 J
4) PE = 15,000 J
5) KE = 32,500 J
6) KE = 40,000 J, PE = 0 J
7) KE = 35,000 J
8) KE = 40,000 J, PE = 0 J
Part B
The total Mechanical Energy = ME = 40,000 J
At the final point, we have;
ME = KE + PE = 40,000 J + 0 J = 40,000 J
Explanation:
Part A
By the law of conservation of energy, we have;
ME = PE + KE
Where;
ME = The total Mechanical Energy of the system
PE = The Potential Energy of the system
KE = The Kinetic Energy of the system
Where there is no friction, we have;
At the final stage, KE = 40,000 J. PE = 0 J
Therefore, ME = PE + KE = 40,000 J + 0 J = 40,000 J
1) At the starting point, we have;
KE = 0 J, therefore, PE = ME - KE = 40,000 J - 0 J = 40,000 J
2) At the bottom of the roller coaster, at the same level the PE is taken as PE = 0 J at the final stage, we have;
PE = 0 J, therefore, KE = ME - PE = 40,000 J - 0 J = 40,000 J
3) Where PE = 20,000 J, KE = ME - PE = 40,000 J - 20,000 J = 20,000 J
4) Where KE = 25,000 J, PE = ME - KE = 40,000 J - 25,000 J = 15,000 J
5) Where PE = 7,500 J, KE = ME - PE = 40,000 J - 7,500 J = 32,500 J
6) At the bottom KE = 40,000 J, PE = 0 J
7) Where PE = 5,000 J, KE = ME - PE = 40,000 J - 5,000 J = 35,000 J
8) KE = 40,000 J, PE = 0 J
Part B
The given that there is no friction nor air resistance, the total Mechanical Energy, ME, is constant and equal to the sum of the Potential Energy, PE and the Kinetic Energy, KE, as follows;
ME = KE + PE
At the final point, we have;
ME = 40,000 J + 0 J = 40,000 J
The total Mechanical Energy = ME = 40,000 J
A runner is jogging in a straight line at a
steady vr= 8.2 km/hr. When the runner is
L= 2.5 km from the finish line, a bird begins
flying straight from the runner to the finish
line at vb= 41 km/hr (5 times as fast as the
runner). When the bird reaches the finish
line, it turns around and flies directly back to
the runner.
What cumulative distance does the bird
travel? Even though the bird is a dodo, assume that it occupies only one point in space
(a “zero” length bird), travels in a straight
line, and that it can turn without loss of
speed.
Answer in units of km.
The cumulative distance traveled by the bird is 3.12 km.
Cumulative distance of the bird
The cumulative distance of the bird is calculated as follows;
Apply the principle of relative velocity.
Vbt - Vrt = L
(Vb - Vr)t = L
where;
Vb is the velocity of the birdVr is the velocity of the runnert is time of motionSubstitute the given parameters and solve for time of motion,
(41 - 8.2)t = 2.5
32.8t = 2.5
t = 2.5/32.8
t = 0.076 hr
Distance traveled by the bird = 0.076hr x 41 km/hr = 3.12 km
Thus, the cumulative distance traveled by the bird is 3.12 km.
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The most soaring vocal melody is in Johann Sebastian Bach's Mass in B Minor. In one section, the basses, tenors, altos, and sopranos carry the melody from a low D to a high
A. In concert pitch, these notes are now assigned frequencies of 146.8Hz and 880.0 Hz . Find the wavelengths ofFind the pressure amplitudes of (d) the final note.
The Wavelength and pressure amplitude of the final note is 0.39 m and 0.255 Pa respectively.
What do you mean by the pressure amplitude?The minuscule pressure difference between compressions and rarefactions in a sound wave is what the human ear uses to function. Pressure amplitude refers to the size of these pressure variations. Generally speaking, a sound appears louder the larger the pressure amplitude it has. Even for very loud sounds, these pressure changes are negligible in comparison to ambient pressure. A jet plane at 30 yards, for example, has pressure changes of just a few hundred Pascals, or less than one-hundredth of atmospheric pressure, which is loud enough to cause damage to human ears (which is roughly 100,000 Pa). The pressure amplitudes of the quietest noises that people can hear are approximately one billionth of the atmospheric pressure.
x=Asin (w [ t-K])+ b
Given:
Initial frequency, [tex]f_{initial} = 146.8\;Hz[/tex]
Final frequency, [tex]f_{final} = 880\;Hz[/tex]
Sound level, [tex]\beta=79\;dB[/tex]
We know that,
Speed of the sound, [tex]v=343\;m/s[/tex]
Density of air, [tex]\rho=1.2\;kg/m^{3}[/tex]
Wavelength, [tex]\lambda=\frac{v}{f}[/tex]
Wavelength of final note is,
[tex]\lambda=\frac{v}{f_{final}}[/tex]
Substitute the known values in the above equation,
[tex]\lambda=\frac{343}{880}}[/tex]
[tex]\lambda=0.39\;m[/tex]
[tex]\beta=10\times log(\frac{I}{I_{0}} )[/tex]
We know that, [tex]I_{o}=1 \times 10^{-12}\;W/m^{2}[/tex]
[tex]79=10\times log(\frac{I}{1 \times 10^{-12}} )[/tex]
By solving the above equation, We get,
[tex]I=7.9\times 10^{-5} W/m^{2}[/tex]
Pressure amplitude of the final note is,
[tex]I = \frac{(\triangle p)^{2} }{2 \times \rho \times v}[/tex]
[tex](\triangle p)^{2} = I \times2 \times \rho \times v[/tex]
[tex]\triangle p = \sqrt{I \times2 \times \rho \times v}[/tex]
Substitute the known values in the above equation,
[tex]\triangle p = \sqrt{7.9 \times 10^{-5} \times2 \times 1.2 \times 343}[/tex]
By solving the above equation, We get,
[tex]\triangle p = 0.255\;Pa[/tex]
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Gabriella and Michelle are a few meters apart, at one end of a football field. Pierre is at the other end of the field, and he sees both of the them moving toward him 4m/s. From Michelle's point of view, how is Gabriella moving?
Group of answer choices
Gabriella is moving toward her at 8m/s
Gabriella is moving away from her at 4 m/s
Gabriella is moving toward her at 4 m/s
Gabriella is not moving
Answer:
Gabriella is not moving
Explanation:
This type of problem can be solved by having the concept of relative velocities clear. Two bodies move at Equal velocity 4 [m/s] towards Pierre. But they ask us about how Michelle sees Gabriella moving.
Since Gabriela moves at the same speed as Michelle, when Gabriela turns her head to see Michelle, she doesn't seem to move faster or slower than she does.
A classic example is when we are passengers of a car and in a window next door we see, a car next to us, this car seems static before our eyes, but we are aware that it moves at a speed equal to that of the vehicle we occupy.
For a given force as time ___
the impulse related to that force increases. *
A. increases
B. decreases
Answer:
Increases
Explanation:
For a given force, as the time increases, the impulse related to that force increases also.
Impulse and time are directly related to one another. Impulse is mathematically given as:
I = F t
I is the impulse
F is the force
t is the time taken
So, as both force and time increases, the value of the impulse must increase.
The net charge on an atom of a given element changes as ______ are added or removed.
Answer:
Answer is Electrons
Explanation:
If there is gain of electron then it will result a negative charge. And when there is loss of electrons it will result in the formation of positive charge iron.
A balloon and your hair have a neutral charge. There is no net charge since there are equal positive and negative charges. This is an example of an __________________
A inference
B observation
C hypothesis
D radiation
an astronomer from a distant star is observing the sun exactly in the plane of jupiter (so that jupiter crosses the solar disk); plot schematically the brightness of the sun he would observe it during the 50 (earth) years period.
As, orbital period of jupiter is equivalent to 12 years.
So, monitoring sun for 50 years will give periodic peaks in intensity.
What is intensity?The power transferred per unit area is referred to in physics as the intensity or flux of radiant energy, and the area is measured on a plane perpendicular to the direction of the energy's transmission. Watts per square meter are the base units of the SI system. The term "intensity" is most often used to describe the average power transfer during a wave's duration, such as sound waves or electromagnetic waves like light or radio waves. There are many different energy exchange scenarios that can be described using the word intensity. One could figure out how much kinetic energy each drop of water from a sprinkler is carrying, for instance.
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21.
Figure 1 shows a person sliding down a zip wire.
Figure 1
Zip wire
Change
in vertical
height
(a) As the person slides down the zip wire, the change in the gravitational potential energy
of the person is 1.47 kJ
Eg=m
The mass of the person is 60 kg
gravitational field strength = 9.8 N/kg
Calculate the change in vertical height of the person.
The change in the vertical height of the person is obtained as 2.5 m.
What is the change in the height?Let us recall that gravity is a universal force of attraction that acts on any object that is found to be on the surface of the earth. It is instructive to know that gravity can only be an attractive force.
As the person slides down the zip wire, the position of the person is changing. We have to know that the gravitational potential energy of the person is dependent on the position of the wire. As such, as the position changes, the gravitational potential energy of the person is also changing.
Using the formula;
W = mgh
W = gravitational potential energy
m = mass of the object
g = acceleration due to gravity
h = height of the body
If we substitute the values we have;
h = W/mg
h = 1.47 * 10^3/ 9.8 * 60
h = 2.5 m
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Question 45 points)
Which is an appropriate way to avoid heat related illness when exercising?
Answer:
drinking enough fluids, wearing proper clothing and timing your workout to avoid extreme heat
ILL GIVE BRAINLIEST IF UR CORRECT
Answer:
B is the answer.
Explanation:
which state of matter best describes the elements inside stars?(1 point) liquid liquid solid solid plasma plasma gas gas
Plasma best describes the elements inside stars.
Plasma:
Plasma is a charged gas and have strong electrostatic interactions.
Plasma is a state of matter that is a subset of gases, but the two states behave very differently.
plasmas are made up of atoms.
plasmas have no fixed shape or volume, and are less dense.
The electrostatic forces between the particles in the plasma become significant.
Plasma can conduct electricity because it contains charged particles.
The gas inside the bulb becomes a conductive plasma.
There are 3 states of plasma which depend on the supplied energy, usually electrical. The lowest energy state is dark mode, basically because it is invisible. The solar wind is dark mode, charged particles flowing from the Sun.
Plasma is a ionised gas , thus conduct electricity.
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A girl is running in a long distance race. As she runs, her respiration rate 10 points increases. Her body cells must process energy at a faster rate to power her muscles as she runs. Is this action a response to internal stimuli or external stimuli?
A. internal stimuli
B. external stimili
What would be the acceleration of an object with a mass of 5,000 g when hit with a force of 55 N?
Answer:
11 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass in kg
From the question
5000 g = 5 kg
We have
[tex]a = \frac{55}{5} \\ [/tex]
We have the final answer as
11 m/s²Hope this helps you
What statement provides an example of designing a solution in the technological design process? Aerospace engineers need a lightweight material to build a jet. Engineers determine which features the material must have. Engineers test a carbon-plastic compound in a wind tunnel. The carbon-plastic compound is redesigned to save maximum energy.
Answer:
Engineers determine which features the material must have.
Explanation:
The statement provides an example of designing a solution in the technological design process is B. Engineers determine which features the material must-have.
what is the procedure for designing answers to technological issues?Steps of the technological layout system encompass: pick out trouble, research the hassle, generate possible answers, pick out the fine solution, create a version, test the model, refine and retest the model as wished, and talk the final answer.
What is a design solution?The design answer definition can be used to generate the quit product specifications with a view to be used to produce the product and to conduct product verification. This technique may be in addition delicate depending on whether or not there are extra subsystems of the quit product that need to be defined.
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Calculate the frequency of an indigo light wave with the wavelength of 4.45 x 10^-7 m. The speed of light is 3.0 x 10^8.
^ meaning to the power
Answer:
6.74 x 10¹⁴Hz
Explanation:
Given parameters:
Wavelength = 4.45 x 10⁻⁷m
Speed of light = 3 x 10⁸m/s
Unknown:
The frequency of the indigo light = ?
Solution:
To solve this problem, we use the expression below;
V = f ∧
V is the sped of light
f is the frequency
∧ is the wavelength
Now insert the parameters and solve;
3 x 10⁸ = f x 4.45 x 10⁻⁷
f = 6.74 x 10¹⁴Hz