Classify the statement below as either Speed or Velocity?
A jeep was driving 40 mph
heading to the grocery store.
Answers
Answer:
Hello There!
It is Speed.
\(\Large\bold\red{Reason}\)
Because in the question it is said that at which speed car is travelling.
Speed is a scalar quantity.
If it is velocity then first know this that it is a vector quantity.
It must include both magnitude and direction.
If it is velocity then it would be 40 mph east or west or north or south.
I hope it is helpful to you...Cheers!_____________Related Questions
4) What is the kinetic energy of a 5 kg object moving ot a velocity of 25 m/s?
Help me please I’m confused
Answers
Mass(m)
Velocity(V)
KE= 1/2 (m) (V^2)
KE=(.5)(5kg)(25^2m/s)
KE= (.5)(5kg)(625m/s^2)
KE= (.5)(3125kgm/s^2)
KE=1562.5 (kgm/(s^2))
Karissa is conducting an experiment on the amount of salt that dissolves in water at different temperatures. She repeats her tests several times using the same procedure.
What can Karissa do to further increase confidence in the results of her experiment?
have another scientist run the same exact procedure in her lab
include several other liquids for comparison
calculate the average amount of salt that dissolves to summarize findings
make sure the experiment follows a specific procedure that allows other scientists to produce the same findings
Answers
Answer:
C.) Calculate the average amount of salt that dissolves to summarize findings
Explanation:
Just telling you, nobody reads these things. They just look at the answer and say oh i got it right now but you should bc i got a 50 on this quiz and this was one of them that was right so believe me when i say, i got this question right. UwU <333333333
Answer:
Calculate the average amount of salt that dissolves to summarize finding
-The third choice/ C-
Have a good day :)
True or false- it is possible for a given substance to absorb one frequency of light and reflect a different frequency.
Answers
Answer:
FALSE
Explanation:
To answer this question we must clarify that for a given approach to exist there must be a transition between two atomic levels of the material.
For the emission, the transition between two determined states must also occur, therefore the radiation emitted is equal to that absorbed.
Consequently the statement is False
A pendulum has a velocity of 2.5 m/s at the bottom of its swing. Using the law of conservation of energy, what is the maximum height of the pendulum's swing if there is no friction acting on it?
Answers
Answer:
The maximum height of the pendulum's swing is 0.32 m
Explanation:
The Principle Of Conservation Of Mechanical Energy
In the absence of friction, the total mechanical energy is conserved. That means that
Em=U+K is constant, being U the potential energy and K the kinetic energy
U=mgh
\(\displaystyle K=\frac{mv^2}{2}\)
At the bottom of the swing, the pendulum has zero potential energy but its kinetic energy is at maximum. At the top of the swing, the pendulum has zero kinetic energy and the potential energy is at maximum.
Thus, applying the principle of conservation of mechanical energy:
\(\displaystyle mgh = \frac{mv^2}{2}\)
Simplifying by m:
\(\displaystyle gh = \frac{v^2}{2}\)
Solving for h:
\(\displaystyle h = \frac{v^2}{2g}\)
Substituting:
\(\displaystyle h = \frac{2.5^2}{2*9.8}\)
h = 0.32 m
The maximum heigth of the pendulum's swing is 0.32 m
Why is a pendulum hanging off another pendulum called a chaotic system?
Answers
Explanation:
If transformations from stabilization are minimal, a double pendulum performs basic geometric motion. The highly nonlinear system, furthermore, becomes radically unstable in its motion as significant displacements are introduced, showing that deterministic processes are not inherently predictable
Clarissa has a credit card with a limit of $1,000 and pays her balance in full each month. If Clarissa needs a short-term loan, can she use her credit card as collateral at a pawn shop? Why or why not? Select the best answer from the choices provided. A. She cannot use it because a credit card is not collateral. B. If the balance on the credit card is zero, she can use it. C. If the balance on the credit card is $1,000, she cannot use it. D. She can use it if she increases the credit limit.
Answers
Answer:
B.she cannot use it because the credit card is not collareral
Explanation:
sorry if am wrong
In the process of loading a ship, a shipping container gets dropped into the water and sinks to the bottom of the harbor. Salvage experts plan to recover the container by attaching a spherical balloon to the container and inflating it with air pumped down from the surface. The dimensions of the container are 5.80 m long, 2.60 m wide, and 2.80 m high. As the crew pumps air into the balloon, its spherical shape increases and when the radius is 1.50 m, the shipping container just begins to rise toward the surface. Determine the mass of the container. You may ignore the weight of the balloon and the air in the balloon. The density of seawater is 1027 kg/m3.
Answers
Answer:
57.885.8 kg weight of the container
Explanation:
The volume of the balloon * density of water = buoyant force of balloon
volume of a sphere = 4/3 pi r^3
= 4/3 pi * (1.5)^3 = 14.14 m^3 <===balloon volume
Now, find the buoyant force on the container ALONE ....
5.8 * 2.6 * 2.8 * 1027 = 43 364 kg <===== buoyant force
Now add the buoyant force of the balloon to find the weight
43 364 + 14.14 * 1027 = 57885.8 kg
if jake paul and logan paul fought to the death who do you think would win?
Answers
Answer:
Hehe :) Fun question, Ig Logan Paul?? XD
A 2100-kg car is traveling at 25 m/s when it crashes into the rear end of a 1650-kg
car traveling at 21 m/s in the same direction on nearly frictionless ice. The two cars
become stuck together and slide on the ice. How fast do the two cars move together
immediately after the collision?
A)22 m/s
B)23 m/s
C)21 m/s
D)18 m/s
Answers
The two cars will move with a velocity of 23m/s(optionB)
What is linear momentum?Linear momentum is the product of a system’s mass and its velocity. In equation form, linear momentum p is
p=mv.
Where m is the mass of the body and v is the velocity at which it moves.
The momentum of the first call = 2100× 25=52500kgm/s
The momentum of the second car = 1650×21= 34650kgm/s
The total momentum before collision = 52500+34650=87150kgm/s
momentum after collision= (2100+1650)v= 3750v
law of conservation of Linear momentum states that; momentum before collision = momentum after collision
Therefore 87150= 3750v
v = 87150/3750
v= 23m/s( nearest whole number)
Therefore the velocity of the two cars after collision is 23m/s.
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Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 35.0 ∘ from vertical, and that of the third is horizontal.
Part A
What light intensity emerges from the third filter?
Answers
The second is 35.0 ∘ from vertical, and that of the third is horizontal: The light intensity emerging from the third filter is I0/2.
What is light?
Light is a form of electromagnetic radiation that is visible to the human eye. It is a fundamental component of the electromagnetic spectrum, which encompasses a range of wavelengths and frequencies.
From a particle perspective, light can be described as a stream of tiny packets of energy called photons. Each photon carries a specific amount of energy, and the energy of a photon is directly proportional to its frequency. Different frequencies of light correspond to different colors that we perceive, ranging from red (lower frequency, lower energy) to violet (higher frequency, higher energy).
When unpolarized light passes through a polarizing filter, the intensity of the transmitted light is reduced by half. In this case, we have three polarizing filters with different orientations.
The first filter has a vertical axis, which means it allows only vertically polarized light to pass through. Since the incident light is unpolarized, half of its intensity is transmitted through the first filter.
The second filter has an axis that is 35.0 degrees from vertical. This means it allows both vertically and horizontally polarized components of the incident light to pass through.
However, the intensity of each component is reduced by half. Therefore, the transmitted intensity through the second filter is (1/2) * (1/2) = 1/4 of the original intensity.
The third filter has a horizontal axis, which allows only horizontally polarized light to pass through.
Since the intensity of the light transmitted through the second filter is already reduced to 1/4 of the original intensity, the intensity emerging from the third filter is (1/4) * (1/2) = 1/8 of the original intensity, which can be simplified to I0/2.
Therefore, the light intensity emerging from the third filter is I0/2.
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A car travels at a speed of 50m/s for 20s. Calculate the distance covered
(m)
Answers
Answer:
1000m
Explanation:
Distance = speed x time = 50x20 = 1000
Answer:
The answer is 1000m
Explanation:
Given;A car travels at a speed of 50m/sTime = 20sTo Find;Distance = ?Formula;Distance = Speed × TimeNow,
D = 50m/s × 20s
D = 1000 m
Thus, The car travels 1000 m.
-TheUnknownScientist 72
what do you think motion and chemical reactions have in common
Answers
The common features of motion and chemical reaction are the movement of particles and the presence of kinetic energy.
What are motion and chemical reaction?Motion is the phenomenon in which an object changes its position concerning other objects. Motion is described in terms of displacement, distance, velocity, acceleration, and speed.
Chemical reactions occur when chemical bonds are formed between atoms. The substances that take part in a chemical reaction are known as the reactants whereas the substances that are produced at the end of the reaction are called the products.
So we can conclude that the movement of particles and the presence of kinetic energy are the common characteristics of motion and chemical reaction.
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find the direction of the dune of these two vectors
Answers
Given:
Vector A = 63.5 m at 90 degrees
Vector B = 101 m at 57.0 degrees
Let's find the direction of the sum of these two vectors.
To find the direction, let's first find the x- and y-components of the vectors.
• Vector A:
\(\begin{gathered} A_x=65.3cos90=0\text{ m} \\ A_y=63.5sin90=63.5\text{ m} \end{gathered}\)• Vector B:
\(\begin{gathered} B_x=101cos57.0=55\text{ m} \\ B_y=101sin57=84.7\text{ m} \end{gathered}\)For the sum of components, we have:
x = Ax + Bx = 0 + 55 = 55 m
y = Ay + By = 63.5 + 84.7 = 148.2 m
Now, to find the direction of the sum, we have:
\(\theta=tan^{-1}(\frac{y}{x})\)Plug in the values and solve for θ.
We have:
\(\begin{gathered} \theta=tan^{-1}(\frac{148.2}{55}) \\ \\ \theta=69.6^o \end{gathered}\)Therefore, the direction of the sum of the vectors is 69.6 degrees.
ANSWER:
69.6 degrees.
using the methos of dimensions derive an expression for the centripetal force f acting on a particle of mass m mivingv with velocity v in a circle of radius r?
Answers
According to the Question:
\(\footnotesize\implies F \propto [m]^x [v]^y [r]^z\)
\(\footnotesize\implies F =k [m]^x [v]^y [r]^z \:...(i)\)
K = Dimensionless ConstantNow, substituting Dimensions of each physical quantity in equation (I):
\(\footnotesize\implies [M^1L^1T^{-2}] =[M^1L^0T^0]^x [M^0L^1T^{-1}]^y [M^0L^1T^0]^z\)
\(\footnotesize\implies [M^1L^1T^{-2}] =[M]^x [L]^{y + z} [T]^{ - y}\)
On comparing the powers of LHS and RHS:
\(\implies \bf x = 1\)
\(\implies - y = - 2\)
\( \implies \bf y = 2\)
\(\implies y + z = 1\)
\(\implies z = 1 - 2\)
\(\implies \bf z = - 1\)
\(\footnotesize\implies F = [m]^x [v]^y [r]^z\)
\(\footnotesize\implies F = [m]^1 [v]^2 [r]^{ - 1}\)
\(\implies\footnotesize \underline{ \boxed{ \bf \red{ F = \frac{m {v}^{2} }{r} }}}\)
why is g called the universal gravitational constant
Answers
Explanation:
Hey there!
Universal gravitation constant (g) is the force of gravitation produced between two bodies of unit mass each separated by unit distance between their centers. The value of universal gravitation constant (g) is 6.67 Nm²/kg², which is constant all over the world. So, that's why it is called universal gravitation constant.
Hope it helps....
How to calculate the friction force when a ball travel through a loop (like in a roaller-coater) at a point omewhere between the top and the bottom of the loop?
Answers
To calculate the friction force when a ball travel through a loop , we should use ½ mv^2 + mgh.
Physical friction is all around us. Static friction is the resistance to an object moving along a path. Finally, explain it with a simple example. Consider the common activity we all engage in: walking. While working, we are constantly in contact with the floor. As we advance our feet, motion pushes against the ground as we move backward. The fact that friction operates in the opposite direction from relative motion is one important concept to be aware of in order to minimize friction. This phenomenon might be helpful for slowing down the action until it eventually stops.
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PLEASE HELP!!!!!
The time needed for a water wave to change from the equilibrium level to the crest is 0.5731 s.
1. What is the period of the wave? Answer in units of s.
2. What is the frequency of the wave? Answer in units of Hz.
Answers
The time taken to reach one crest is 0.5731 s. Then the time period of the wave is 1.146 s. The frequency is the inverse of the period that is 0.87 Hz.
What is period of wave ?The time period of a wave is the time required to complete one wave cycle. For a transverse wave the period of the wave is the time required to reach from one crest to the next crest of the wave.
Given that, time to reach one crest = 0.5731 s.
then the time for to the next crest from the equilibrium position is :
T = 0.5731 s× 2 = 1.146 s.
Frequency of a wave is the number of wave cycles per second. It is the inverse of time period of the wave.
Hence, frequency = 1/T
ν = 1/ 1.146 s = 0.87 Hz.
Therefore, the period of the wave is 1.14 s and frequency is 0.87 Hz.
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unpolarized light of intensity 300 w/m is incident on two ideal polarizing sheets that are placed with their transmission axes perpendicular to each other. an additional polarizing sheet is then placed between the two, with its transmission axis oriented at 30 to that of the first. 1) what is the intensity of the light passing through the stack of polarizing sheets? (express your answer to two significant figures.) 2) what orientation of the middle sheet enables the three-sheet combination to transmit the greatest amount of light?
Answers
1) Intensity: Approximately 113 W/m².
2)Middle sheet: Transmission axis perpendicular to the first sheet.
When unpolarized light passes through a polarizing sheet, its intensity reduces by half. Therefore, the intensity of light passing through the first polarizing sheet is 150 W/m² (300 W/m² divided by 2).
Since the transmission axes of the first two sheets are perpendicular, no light passes through the second sheet.
Now, the additional polarizing sheet is placed between the two. Its transmission axis is oriented at 30 degrees to the first sheet. When the angle between the transmission axes of two polarizing sheets is θ, the intensity of light passing through both sheets is given by I = I₀ * cos²(θ), where I₀ is the initial intensity.
In this case, θ = 30 degrees, so the intensity passing through the third sheet is I = 150 W/m² * cos²(30°). Evaluating this expression, we find cos²(30°) = 3/4, which gives I = 150 W/m² * (3/4) = 112.5 W/m².
Therefore, the intensity of light passing through the stack of polarizing sheets is approximately 113 W/m² (rounded to two significant figures).
To enable the three-sheet combination to transmit the greatest amount of light, the middle sheet should have its transmission axis aligned with the polarization of the incoming light.
Since the initial light is unpolarized, it has equal components of linearly polarized light along all possible axes.
Thus, to maximize transmission, the middle sheet should have its transmission axis perpendicular to the first sheet's axis, i.e., at 90 degrees.
This orientation allows all components of the initially unpolarized light to pass through the stack, resulting in the maximum transmission of light.
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describe relative motion with an examples
Answers
Answer:
The measurement of an object's motion with respect to any other object that is moving or stationary is called Relative Motion.
mountain bike tires have large, knob-like treads. these tires are useful on steep slopes because they responses o increase friction o carry heavy weights. o increase the stopping distance. o prevent braking of the bicycle.
Answers
The large, knob-like treads on mountain bike tires are useful on steep slopes because they increase friction. Correct choice is option A.
As a mountain bike travels on a steep slope, the tires need to provide sufficient friction to maintain control and prevent slipping. The large, knob-like treads on mountain bike tires increase the surface area of the tire that comes into contact with the ground, which increases the friction between the tire and the ground. This increased friction allows the rider to maintain better control of the bike and avoid slipping or sliding down the slope.
The other options presented are not accurate because mountain bike tires with large, knob-like treads are not designed to carry heavy weights or prevent braking of the bicycle. In fact, the large treads can increase the stopping distance of the bike because they can create more rolling resistance, requiring the rider to apply more force to the brakes to come to a stop. Option A is correct.
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b) Explain the method of preparing electromagnet. How do you test the
poles of an electromagnet with the help of magnetic compass ?
Answers
Answer:
An electromagnet is made by forming a coil around a soft iron bar (known here as the metal) such as a nail or screw and connect with an insulated copper wire (known here as the electric current conductor) the ends of the wound copper is then connected separately to the positive and negative terminals of a battery (known here as the source of electric current)
The north seeking needle of the magnetic compass will move away when brought close to the north pole of the formed electromagnet which can then be labelled N
The magnetic compass needle will be attracted to the south pole of the electromagnet which can then be labelled S
Explanation:
An electromagnet is an electric powered magnet that is formed (temporarily) by the perpendicular movement of electric current with respect to a metal core
The magnitude and the poles of an electromagnet can be changed by changing the magnitude and the direction of flow of the electric current respectively.
Question 12 A wave has a wavelength of 7.96 m and travels at 30.67 m/s. What is the frequency of the wave?
Answers
Answer:
0.2597hertz
Explanation:
first of all we have to calculate time.
time is given by speed/distance
hence=30.67/7.96
=3.85s
frequency is given by 1/time
=1/3.85
=0.2597hertz
on which of the following does the moment of inertia of an object depend? check all that apply. on which of the following does the moment of inertia of an object depend?check all that apply. linear speed linear acceleration angular speed angular acceleration total mass shape and density of the object location of the axis of rotation
Answers
The moment of inertia of an object depend on Option D. total mass shape and density of the object location of the axis of rotation.
Angular acceleration refers back to the time fee of change of angular velocity. As there are types of angular velocity, specifically spin angular pace and orbital angular velocity. The motion of rotating items which include the wheel, fan, and earth are studied with the assistance of angular acceleration.
Angular Acceleration is described because of the time charge of alternate angular speed. it also includes expressed in radians according to 2d consistent with 2nd. as a consequence, α = d ω d t. The angular acceleration is likewise known as rotational acceleration.
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it depends upon
a)total mass
b)shape and density of the object
c)location of the axis of rotation
what is the force created by a hanging mass of 220 grams? (give answer in newtons to 2 places of decimal)
Answers
The force created by the hanging mass is: 2.16 N
What is force?It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.
To solve this exercise, the formula and procedure to be applied is:
F = m * g
Where:
m = massF = Forceg = gravityInformation about the problem:
F= ?1 N = kg * m/s²m = 220 gg= 9.8 m/s²By converting the mass form (g) to (kg) we have:
m = 220 g* 1 kg/1000 g
m= 0.220 kg
Applying the force formula, we get:
F = 0.22 kg * 9.8 m/s²
F= 2.16 N
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The slope of the line tangent to the curve on a position-time graph at a specific time is the
Answers
Answer:
I do I make a brinliest can you please can me
A bird is flying with a speed of 18.0 m/s over water when it accidentally drops a 2.00 kg fish. If the altitude of the bird is 5.40 m and friction is ignored, what is the kinetic energy of the fish when it hits the water?
Answers
My abbreviations; KE = Kinetic Energy; GPE = Gravitational Potential Energy.
So first off, we know the fish has KE right when the bird releases it. Why? Because it has horizontal velocity after released! So let’s calculate it:
KE = 1/2(m)(V)^2
KE = 1/2(2)(18)^2
KE = 324 J
Nice!
We also know that the fish has GPE at its maximum height before release:
GPE = mgh
GPE = (2)(9.81)(5.40)
GPE = 105.95 J
Now, based on the *queue dramatic voice* LAW OF CONSERVATION OF ENERGY, we know all of the initial energy of the fish will be equal to the amount of final energy. And since the only form of energy when it hits the water is KE, we can write:
KEi + GPEi = KEf
(Remember - we found the initial energies before!)
(324) + (105.95) = KEf
KEf = 429.95J
And that’s you’re final answer! Notice how this value is MORE than the initial KE from before (324 J) - this is because all of the initial GPE from before was transformed into more KE as the fish fell (h decreased) and sped up (V increased).
If this helped please like it and comment!
In an experiment to determine the acceleration due to gravity, one student drops a tennis ball out of the school’s third floor window. another student starts a timer when the first student lets go and stops the timer when the ball hits the ground. they conduct the experiment once and record the data. is this a valid experiment, why or why not?
Answers
No, it is not valid because they did not have any repeat trials.
What is acceleration due to gravity?The acceleration that an object experiences as a result of gravitational force is referred to as the object's acceleration due to gravity. M/s2 is its SI unit. Gravitational acceleration is a vector quantity, which means it has both a magnitude and a direction. The letter g stands for the acceleration due to gravity at Earth's surface. Its standard value is 9.80665 m/s2 (32.1740 ft/s2), according to the formula. A body in free fall actually accelerates differently depending on the location.
Because moving the object, air, or other factors could distort the results of a single instance. There must therefore be repeated experiments in order to obtain precise results.
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helpppp i am not smart
Answers
Answer:
it might be b maybe
Explanation:
Module 3 Discussion!
After reading Ch.12 and 13 of the text (The essentials of Finance and Accounting for nonfinancial managers/ Third Edition) on Strategy and Financial Forecasting, watching the SWOT video based on Paley’s Products from the Ratio Analysis in Module 2 and the additional narrative information in Appendix C, Phase
Create a SWOT analysis that will reflect the TOWS analysis as described in Ch. 12 of the text. The purpose of the SWOT analysis is to lay out several issues and possibilities to be considered in Paley’s strategic planning. The strengths and weaknesses are internal issues, whereas the opportunities and threats are external.
The second part of the analysis is to create actions based on the SWOTs. This is sometimes called a TOWS analysis and is done by comparing the boxes, two at a time:
Offensive actions come from strengths that link to opportunities, so a specific strength can be applied to exploit an opportunity.
Adjusting actions come from addressing weaknesses, which then can be used to exploit opportunities that previously had not been possible.
Turnaround actions come from weaknesses that link to threats. These are high-risk issues where a priority needs to be given to addressing the weakness to minimize the vulnerability.
Defensive actions come from threats that link to strengths. These are latent issues because if the threat materializes, an already-existing strength is available to counter it.
Additional actions can be included to address other issues not directly identified in the SWOTs.
3. From the actions identified in part 2, pick 3-5 strategic actions that you feel Paley must achieve or at least start in the upcoming year and state your reasons for including them.
Attach your completed SWOT form and list of strategic actions with supporting logic and facts from the case as your answer for this discussion question. These actions are the foundation for the strategic plan
Answers
SWOT Analysis Strengths- Paley’s Products has a low overhead cost with the company operating at a high level of efficiency, resulting in competitive pricing.- They have a team of experienced employees who have worked in the industry for several years.- They have a variety of products in the portfolio that can satisfy customers from different sectors.- They are reputable and have a loyal customer base.Weaknesses- They have been slow to adopt new technology, and this may be a disadvantage to the company.- Limited marketing and sales promotion are affecting their sales revenue.-
They depend on a few key customers for the bulk of their sales revenue, leaving them vulnerable to market changes.Opportunities- Expansion of the product line to include unique products.- The establishment of strategic partnerships with other businesses in the industry.- Exploration of new markets, such as international markets.- Improvement of marketing techniques to increase brand awareness.Threats- Changes in consumer preferences towards environmentally friendly products.- Increase in competition from other businesses in the industry.- Fluctuating market prices for raw materials that may lead to price increases.
Strategic Actions to be taken by Paley Products1. Development of an E-commerce platform to allow online transactions with customers. The E-commerce platform will enable Paley to reach a wider customer base, expand its reach, and increase sales revenue.2. Investment in the research and development of new environmentally friendly products. Paley will remain competitive and cater to the needs of consumers who prefer green products.3. Establishment of strategic partnerships with other businesses in the industry to leverage the strength of other companies in the industry and to develop new products or increase market share.4. Improvement of marketing techniques to increase brand awareness and improve visibility. A marketing strategy that incorporates social media and other digital channels can help promote the brand to potential customers.5. Expansion into international markets. This will enable Paley to diversify its customer base and generate more revenue. Paley can start by targeting nearby countries, then expand globally as they gain more experience and financial stability.
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To compare the hearing capacities of 5 of his friends, Ravi designs a simple experiment. He places a CD player at the end of a long hall containing a CD with 5 well-known songs.
One by one each person hears the same 5 songs he plays softly but at a pre-determined volume.
Each person starts at a distance of 1 metre from the player and moves away from it. The distance at which a person says that he cannot hear the song any more, is noted. Others are not in the room when 1 person is hearing the songs.
Which of these steps may increase the reliability of the results obtained?
A)having each person listen to just 1 song instead of 5
B)allowing all people to stay in the room for the entire experiment
C)having each person start from far and walk towards the C
D )player Dvarying the volume for the different songs being played
Answers
Answer:
A) having each person listen to just 1 song instead of 5.
Explanation:
Ravi could accurately use the outcome to compare the hearing capacities of his friends by this experiment if appropriate precautions are observed.
Playing 5 well known songs simultaneously could result to the interference of sounds when each participant moves away from the player. Which could naturally cause the variation in volume of the songs played with respect to the increasing distance.
Therefore, the reliability of the result from this experiment can be increased if each person listen to just 1 song instead of 5 at a predetermined volume. Each participant would be able to focus on hearing a song during the experiment.