Answers
Given data
*The distance between the centers of two successive rarefaction area of a sound wave is 4.5 cm
The wavelength of the sound wave is 4.5 cm as the vertical distance between the adjacent peaks (crests or troughs of the wave)
Hence, the correct answer is (C)
Related Questions
Describe the setup of the electromagnet. Why does the wire need to be a conductive material?
Answers
An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.
An electromagnet is a type of magnet that is created by running an electrical current through a wire. The setup of an electromagnet involves a few basic components. First, there must be a wire that is conductive, meaning that it can conduct electricity. This wire is usually wrapped around a core, which is often made of iron, steel, or another magnetic material. When an electrical current is run through the wire, it creates a magnetic field around the wire. This magnetic field then magnetizes the core, creating an even stronger magnetic field. The strength of the electromagnet can be controlled by adjusting the amount of current that is run through the wire. The wire must be a conductive material because it needs to be able to carry the electrical current that creates the magnetic field. If the wire were not conductive, then the electrical current would not be able to flow through it, and the magnetic field would not be created. In summary, the setup of an electromagnet involves a conductive wire wrapped around a magnetic core, which is magnetized by the electrical current running through the wire. The wire must be conductive to carry the electrical current and create the magnetic field.For more questions on electromagnet
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A block slides across a flat, horizontal surface to the right. For each choice, the arrows represent velocity vectors of the block at successive intervals of time. Which of the following diagrams represents the situation in which the block loses kinetic energy?
Answers
The diagrams the question refers to is in the attachment.
Answer: Third diagram or alternative C.
Explanation: In physics, vector is a representation of magnitude and direction.
Kinetic Energy is energy made by a moving object, i.e., when an object with mass has velocity, it also has Kinetic Energy. It's calculated as:
\(K=\frac{1}{2}mv^{2}\)
Vectors below are representing change in velocity during intervals of time.
In the first diagram, vectors doesn't change, so velocity and kinetic energy are constant.
At the second, velocity still constant, however, the "intensity" of the arrow is weaker than the first, which means velocity is less than the first diagram and so is its kinetic energy.
In the fourth diagram, the arrows grow bigger from left to right. This means velocity increases during time. If velocity grows bigger, so does kinetic energy.
In the third diagram, the arrows decrease as it goes to the right: the block's velocity decreases during the successive intervals, which means, kinetic energy diminishes through the interval.
Thus, diagram C represents the situation in which the block loses kinetic energy.
Boxcar A has a mass of 1,500 kg and a velocity of 5 m/s when it collides with a stationary 1,000 kg Boxcar B. When the boxcars collide, they couple together and move at final velocity vf. Later in a different collision, Boxcar B collides with a stationary Boxcar A, and they couple together and move at the same final velocity as during the first collision, vf. What would the initial velocity of Boxcar B have to be in the second collision to result in the coupled boxcars moving with the final velocity vf? Assume no other forces act on the boxcars.
Answers
Final velocity of Boxcars A and B after collision, vf = ?
Using the equation for the conservation of momentum, the final velocity of both boxcars after collision will be calculated as:
\(\begin{gathered} m_Au_A+m_Bu_B=(m_A+m_B)v_f \\ 1500(5)+1000(0)=(1500+1000)v_f \\ 7500=2500v_f \\ v_f=\text{ }\frac{7500}{2500} \\ v_f=\text{ }3\text{ m/s} \end{gathered}\)In a different collision:
Boxcar A is stationary before collision. That is,
\(u_A=\text{ 0 m/s}\)Since Boxcar B was moving before collision, it will have a certain amount of initial velocity that we are yet to know
\(u_B=\text{ ?}\)According to the question, the final velocity still remains the same. That is,
vf = 3m/s
Reapplying the equation for the conservation of momentum in order to calculate the initial velocity of Boxcar B:
\(undefined\)if a bus drives 2km due east,5km 45 degrees north of east, 4km at 30 degrees north of west, then 2km due south. what is the bus's resultant displacement?
Answers
The bus resultant displacement is approximately 4.14 km at an angle of 59.5 degrees north of east.
The first movement is 2 km due east, which means it has an x-component of 2 km and a y-component of 0 km.
The second movement is 5 km at 45 degrees north of east. This can be broken down into x and y components using trigonometry: x = 5 km * cos(45) = 3.54 km y = 5 km * sin(45) = 3.54 km
The third movement is 4 km at 30 degrees north of west. This can also be broken down into x and y components using trigonometry: x = -4 km * cos(30) = -3.46 km (negative because it’s towards the west) y = 4 km * sin(30) = 2 km
The fourth movement is 2 km due south, which means it has an x-component of 0 km and a y-component of -2 km.
Adding up all the x and y components, we get: x_total = 2 + 3.54 + (-3.46) + 0 = 2.08 km y_total = 0 + 3.54 + 2 + (-2) = 3.54 km
The magnitude of the resultant displacement can be calculated using the Pythagorean theorem: resultant_displacement = sqrt(x_total^2 + y_total^2) = sqrt(2.08^2 + 3.54^2) ≈ 4.14 km
The direction of the resultant displacement can be calculated using the arctan function: direction = arctan(y_total / x_total) ≈ 59.5 degrees north of east
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Please show work for number 1! I will give brainliest
Answers
The value of angle of reflection of the ray is determined as 70⁰.
option B.
What is the angle of reflection?Angle of reflection is the angle between a reflected ray and the perpendicular to a reflecting surface drawn at the point of contact.
Based on the definition of angle of reflection, we can determine the value of angle of reflection from the ray diagram as follows;
The incident angle (angle between the incoming arrow and the normal) = 70 degrees
The reflected angle (angle between the out going arrow and the normal) = 70 degrees
Thus, the value of angle of reflection of the ray is determined as 70⁰.
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The angle of reflection for the light ray shown in the diagram given in the question is 70° (option B)
How do i determine the angle of reflection?To determine the angle of reflection, we must bear in mind the laws of reflection. This is given below:
The first law of reflection states that the incident ray, the reflected ray, and the normal at the point of incidence, all lies in the same plane. The second law of reflection states that the angle of reflection is equal to the angle of incidence i.e Angle of reflection = Angle of incidenceFrom the above law, we can obtain the angle of reflection. This is illustrated below:
Angle of incidence = 70°Angle of reflection =?Angle of reflection = Angle of incidence
= 70°
Thus, we can conclude that the angle of reflection is 70° (option B)
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As an asteroid has a perihelion distance of 2 A. U and an aphelion distance of 18. A.U calculate its orbital semi major axis and period. Use Kepler’s 3rd law and please show calculations.
Answers
The asteroid's orbital semi-major axis is 10 AU, and its period is 63.4 years.
What is the orbital semi major axis and period?
To calculate the orbital semi-major axis and period of an asteroid with a perihelion distance of 2 AU and an aphelion distance of 18 AU, we can use Kepler's 3rd law, which states that the square of a planet's orbital period is proportional to the cube of its semi-major axis.
First, we need to find the semi-major axis of the asteroid's orbit:
a = (2 AU + 18 AU) / 2
a = 10 AU
Now, we can use Kepler's 3rd law to find the period of the asteroid's orbit:
T^2 = (4π^2 / GM) * a^3
where;
G is the gravitational constant and M is the mass of the Sun.We can assume that the mass of the asteroid is negligible compared to the mass of the Sun, so we can use the mass of the Sun as M.
G = 6.6743 × 10^-11 m^3 kg^-1 s^-2 (gravitational constant)
M = 1.989 × 10^30 kg (mass of the Sun)
a = 10 AU = 1.496 × 10^11 m (semi-major axis)
T^2 = (4π^2 / (6.6743 × 10^-11 m^3 kg^-1 s^-2 * 1.989 × 10^30 kg)) * (1.496 × 10^11 m)^3
T^2 = 4.00 × 10^23 s^2
T = 2.00 × 10^12 s
Finally, we can convert the period to years:
T = 2.00 × 10^12 s / (365.25 days/year * 24 hours/day * 3600 seconds/hour)
T = 63.4 years
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1.) Consider the graph shown to the right. The two lines denote the motion of two different objects which move in the x direction only.
2.) Five vectors, A, B, C, D, E are shown at the right. Which of the combinations below has the largest magnitude ?
Graph is shown in the picture, please help!
Answers
The change in position of an object over time is known as velocity. The thing in question is traveling correctly. Vector c has the largest magnitude of all the vectors. And as demonstrated, a half-arrow can be used to represent this vector.
What are some types of objects?Everything that is readily apparent or palpable and has a stable form. An object of study in medicine is anything, anyone, or anything to which action or thinking is focused.
What is a kid-friendly object?A person or thing that the verb directs its action toward is called an object. A noun, pronoun, or noun phrase that is impacted by the action verb is referred to as an object. A sentence is also finished by it.
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what are some possible results of constructive forces on earth's surface
Answers
Answer:
what are the choices
Explanation:
Answer:
Landforms are a result of a combination of constructive and destructive forces. Collection and analysis of data indicates that constructive forces include crustal deformation, faulting, volcanic eruption and deposition of sediment, while destructive forces include weathering and erosion.
Explanation:
Question 8 (5 points)
What is indicated by the slope of an acceleration vs. time graph?
The maximum speed of the object
The total displacement of the object
The change in position of the object
The velocity of an object
Answers
The velocity of an object is indicated by the slope of an acceleration vs. time graph
What is velocity of an object?Acceleration is how much velocity changes,from the definition here, the slope of the graph tells us how quickly the object's velocity is changing over time.
To dtermine object's velocity from an acceleration vs. time graph, you would have to carry out the integration of the acceleration to get the object's velocity as a function of time.
Hence the last option is the corrcet answer here
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Answer:The velocity of an object
The presence of more than 59 tattoos on Ötzi's body suggests that _____.
Answers
Answer:
Tattoos have been around for long in worlds history. The culture he belonged to, the symbols.
Explanation:
What is the difference between elastic PE and gravitational PE?
Answers
Gravitational potential energy has to do with how high something is, and has to do with earth’s gravitational pull.
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?
Answers
Answer:
Yes and no
Explanation:
Momentum in a typical mechanical system made up of macroscopic elements cannot be "hidden" from human sight. But momentum can be concealed in other systems. For instance, in an electromagnetic system, where the electromagnetic field is often inaudible to human vision, momentum can be transferred to it.
In golf par is the
A. number of golfers who can play a hole at a time
B. typical number of strokes needed to complete a hole .
C. typical number of golfers who pass the course
D. number of holes in a golf course
Answers
Par is a term used in golf to describe the number of strokes a skilled golfer should be able to complete a particular hole or course in. It is determined based on the length and difficulty of the hole or course. A golfer's score for a particular hole is then compared to the par for that hole to determine whether they scored above par (meaning they took more strokes than the expected number), below par (took fewer strokes), or at par (took the expected number of strokes). The overall score for a round of golf is also compared to the total par for the course to determine a golfer's performance.
Answer:
B. typical number of strokes needed to complete a hole.
What is the net work doneon the object over the distance shown?
Answers
Explanation
If you graph the force on an object as a function of the position of that object, then the area under the curve will equal the work done on that object, so we need to find the area under the function to find the work
Step 1
find the area under the function.
so
Area:
\(\text{Area}=rec\tan gle_{green}+triangle_{gren}-triangle_{red}\)\(\begin{gathered} \text{the area of a rectangle is given by} \\ A_{rec}=lenght\cdot widht \\ \text{and} \\ \text{the area of a triangle is given by:} \\ A_{tr}=\frac{base\cdot height}{2} \end{gathered}\)so
\(\begin{gathered} \text{Area}=rec\tan gle_{green}+triangle_{gren}-triangle_{red} \\ \text{replace} \\ \text{Area}=(F_0\cdot d)+\frac{(F_0\cdot d)}{2}-\frac{(F_0\cdot d)}{2} \\ \text{Area}=(F_0\cdot d) \\ Area=F_0d \end{gathered}\)therefore, the answer is
\(A)F_0d\)I hope this helps you
Which of the following organisms is not found in savannas?
a.
cheetah
b.
pangolin
c.
prairie chickens
d.
hyena
The answer is C- prairie chickens
Answers
prairie chickens organisms is not found in savannas. The correct option is c.
Savannas are typically characterized by the presence of tall grasses and a few scattered trees. The climate in this ecosystem is hot and dry, with a pronounced wet and dry season. Prairie chickens are not found in savannas.Here's why prairie chickens are not found in savannas:Savannas are typically found in tropical regions and are characterized by tall grasses and a few scattered trees. In contrast, prairies are found in temperate regions and are characterized by shorter grasses and a greater number of trees. Prairie chickens are a species of bird that are primarily found in prairie habitats. These birds are adapted to life on the open plains and feed on a variety of insects and seeds. While prairie chickens may share some similarities with the animals found in savannas, they are not typically found in this type of ecosystem.
option C is the correct answer.
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What is the kinetic energy of a 2.0 kg object moving at 5 m/s?
Answers
Let's put the given values into the formula below and get the result;
\(K.E=\frac{1}{2}mv^2\)We know the numerical value of speed. We also know the mass. We can jump straight to the conclusion.
\(K.E=\frac{1}{2}(2kg)(5m/s)^2\)\(=\frac{1}{2}(2kg)(25m^2/s^2)\)\(=25m^2/s^2=25J\)The Kinetic Energy is 25J.
If we want to accelerate an object, we must apply force on it, after applying Force some work has to be done in which energy should be transferred to the object. The energy is known as kinetic energy. The kinetic energy always depends on the mass and the velocity. It is denoted as K and the Si unit is Joules (J).
To calculate the Kinetic Energy,
K= 1/2 mv^2
m = mass
v = velocity
K = kinetic energy
In solving the above equation,
K = 1/2 x2 x 5^2
K = 5x5
K = 25
The Kinetic Energy is 25J.
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The law of motion that states that if one object exerts a force on another object, the other object exerts an equal force back on the first object is
A. Newton's second law.
B. Newton's third law.
C. Newton's first law.
D. Newton's law of inertia
Answers
Answer:
B
Explanation:
For every action,there is an equal but opposite reaction.
Someone please help me
The force F acting on a body varies with the displacement s from a point O as shown in the graph.
(a) Calculate the work done when the body is displaced
(i) from s=0 to s = 0.4 m
(ii) from s=0 to s =0.8 m
(b) If the mass of the body is 0.20 kg and its initial velocity is 2.00 m/s, find its velocity
(i) when s = 0.4 m
(ii) when s = 0.8 m
Answers
a.i) The work done when the body is displaced from s=0 to s = 0.4 m is 0.8 J.
(a.ii) The work done when the body is displaced from s=0 to s = 0.8 m is 1.2 J.
(b.i) The final velocity of the body when the displacement is 0.4 m is 3.46 m/s.
(b.ii) The final velocity of the body when the displacement is 0.8 m is 4 m/s.
What is work done?The work done on an object is the product of force and displacement of the object.
The work done between 0 to 0.4 m is determined from the area of the triangle formed.
W = ¹/₂(0.4 m - 0 m) x ( 4 N )
W = ¹/₂(0.4 m) x ( 4 N )
W = 0.8 J
The work done from s=0 to s =0.8 m,
W = ( Area of 0 to 0.4 m) + ( Area of 0.4 m to 0.8 m)
W = 0.8 J + ¹/₂(0.8 m - 0.4 m) x ( 2 N )
W = 0.8J + ¹/₂(0.4 m) x ( 2 N )
W = 0.8J + 0.4 J
W = 1.2 J
The final velocity of the body is calculated by applying work energy principle.
change in kinetic energy of the body = work done by the body
¹/₂m(v₂² - v₁²) = W
Where;
m is the mass of the bodyv₁ is the initial velocityv₂ is the final velocitywhen, s = 0.4 m, the final velocity is calculated as;
¹/₂m(v₂² - v₁²) = 0.8 J
¹/₂(0.2)(v₂² - 2²) = 0.8
0.1(v₂² - 2²) = 0.8
v₂² - 2² = 0.8 / 0.1
v₂² - 2² = 8
v₂² = 8 + 4
v₂² = 12
v₂ = √12
v₂ = 3.46 m/s
when s = 0.8 m, the final velocity is calculated as;
¹/₂(0.2)(v₂² - 2²) = 1.2 J
0.1(v₂² - 2²) = 1.2
v₂² - 2² = 1.2 / 0.1
v₂² - 2² = 12
v₂² = 12 + 4
v₂² = 16
v₂ = √16
v₂ = 4 m/s
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What is the most important property architects must consider when selecting materials for the walls, ceilings, and floors for a new concert hall?
A.thermal properties
B. chemical properties
C. Electrical properties
D. Acoustical properties
Answers
Answer:
E.
Explanation:
becasue E. is everything
(b) The particle displacement y of air molecules due to a sound wave is given by y 4m and w = = 0.008 cos wt sin kz. Where k - m 50m rad/s. calculate i. The distance between two consecutive nodes ii. The amplitude after 0.56s
Answers
The distance between two consecutive nodes and the amplitude after 0.56s are m/2 and 1.75×10^(-4) m respectively.
What's the distance between consecutive nodes of the displacement of air molecules?Wavelength is the distance between two consecutive nodes or toughs or crests or anti-nodes.So, distance between consecutive nodes = wavelength = 2π÷k= 2π/(4π÷m)
= m/2
What's the amplitude after 0.56s of the displacement of air molecules?Displacement after 0.56 s = 0.008×cos(50π×0.56s)
=1.75×10^(-4) m
Thus, we can conclude that the distance between consecutive nodes and displacement after 0.56 s are m/2 and 1.75×10^(-4) m respectively.
Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Question: The particle displacement y of air molecules due to a sound wave is given by y=0.008coswtsinkz where k=4π÷m and w=50π rads/s.
Calculate:
I) the distance between 2 consecutive nodes
ii) the amplitude after 0.565s
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28g of copper pellets are removed from a 300∘C oven and immediately dropped into 90 mL of water at 25∘C in an insulated cup.
Answers
The final temperature of the water and copper pellets is 43.8°C.
We can use the equation:
\(mc\Delta T = mwCw\Delta T\)
Substituting the values given in the problem:
m c = 28 g
m w = 90 mL = 90 g
c = 0.385 J/g°C
Cw = 4.18 J/g°C
ΔT = T f - 25°C
where T f is the final temperature of the water and copper pellets.
Simplifying the equation:
28 g x 0.385 J/g°C x (T f - 300°C) = 90 g x 4.18 J/g°C x (T f - 25°C)
Solving for T f:
T f = (90 g x 4.18 J/g°C x 25°C + 28 g x 0.385 J/g°C x 300°C) / (90 g x 4.18 J/g°C + 28 g x 0.385 J/g°C)
T f = 43.8°C
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--The complete Question is, What are the final temperature of the water and the copper pellets after thermal equilibrium is reached, assuming no heat is lost to the surroundings? --
the average distance between the earth and moon is 3.84x10^5km how far is this in miles
Answers
Answer:
The time that would take a radio wave with the frequency of 7.25 x 10^5 Hz to travel from earth to the moon is 1.28 sec
Explanation:
Time = distance / speed
distance = 3.84 x 10 ^5 km
convert Km to m
1 Km= 1000 m
3.84 x10^5km= ? m
by cross multiplication
= (3.84 x 10^5 km x 1000 m) / 1 km = 3.84 x 10 ^8 m
Speed of light= 3.0 x 10^8 m/s
therefore time = 3.84 x10^8 m / 3.0 x10^8 m/s = 1.28 sec
please answer please please
Physics
Answers
Answer:
about -1.26 m/s²
Explanation:
The acceleration can be found from the formula ...
a = (v2² -v1²)/(2d)
Here, we have the initial velocity v1=23 m/s, the final velocity v2=0, and teh distance d=210 m. Using the formula, we find the acceleration to be ...
a = (0 -23²)/2(210) ≈ -1.2595 . . . m/s²
A ceramic capacitor has an effective plate area of 4 cm2 separated by 0.1 mm of ceramic of relative
permittivity 100.
a) Calculate the capacitance of the capacitor in picofarads.
b) If the capacitor in part (a) is given a charge of 1.2 μC what will be the pd between the plates?
Answers
a) The capacitance of the ceramic capacitor is approximately 354.16 pF.
b) The potential difference between the plates of the capacitor will be approximately 3.39 x 10^6 volts.
To calculate the capacitance of the ceramic capacitor, we can use the formula:
C = (ε₀ * εᵣ * A) / d
where:
C is the capacitance,
ε₀ is the vacuum permittivity (approximately 8.854 x 10^(-12) F/m),
εᵣ is the relative permittivity of the ceramic (given as 100),
A is the effective plate area (given as 4 cm², which is equal to 4 x 10^(-4) m²),
d is the separation between the plates (given as 0.1 mm, which is equal to 0.1 x 10^(-3) m).
Let's calculate the capacitance in picofarads (pF):
a) Calculation of capacitance (C):
C = (ε₀ * εᵣ * A) / d
= (8.854 x 10^(-12) F/m * 100 * 4 x 10^(-4) m²) / (0.1 x 10^(-3) m)
= (8.854 x 100 x 4) / 0.1
= 354.16 pF
Therefore, the capacitance of the ceramic capacitor is approximately 354.16 pF.
b) To find the potential difference (PD) between the plates when the capacitor is given a charge of 1.2 μC (microcoulombs), we can use the formula:
PD = Q / C
where:
PD is the potential difference,
Q is the charge (given as 1.2 μC, which is equal to 1.2 x 10^(-6) C),
C is the capacitance (calculated in part a) as 354.16 pF, which is equal to 354.16 x 10^(-12) F).
Let's calculate the potential difference (PD):
b) Calculation of potential difference (PD):
PD = Q / C
= (1.2 x 10^(-6) C) / (354.16 x 10^(-12) F)
= 3.39 x 10^6 V
Therefore, the potential difference between the plates of the capacitor will be approximately 3.39 x 10^6 volts.
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5. A body travels in a circle at a constant speed, it
a) has same acceleration
b) has no acceleration
c) has a centripetal acceleration
Answers
Why are the noble gases the least reactive elements?
Answers
Select ALL the
correct answers.
Which two examples describe ways that corporations can give large donations to presidential candidates?
A corporation leader makes
direct payment to the candidate.
A corporation creates another company to accept candidate contributions
A corporation collects moneys from its employees to contribute to
A corporation contributes to a Super PAC that
a PAC
accepts contributions
for a candidate,
Reset
Next
Answers
Answer: Hope this helps ;) don't forget to rate this answer !
Explanation:
There are two correct answers:
A) A corporation leader makes direct payment to the candidate.
D) A corporation contributes to a Super PAC that a PAC accepts contributions for a candidate.
Option A describes a scenario where a corporation directly donates money to a presidential candidate, which is allowed as long as it is done within the limits set by campaign finance laws.
Option D describes a scenario where a corporation donates money to a Super PAC, which is a type of political action committee that can accept unlimited donations from individuals, corporations, and other organizations. The Super PAC can then use the money to support or oppose a particular candidate, but it is not allowed to coordinate directly with the candidate or the candidate's campaign.
I hope this helps! Let me know if you have any other questions.
Four objects labeled W, X, Y, and Z have different forces applied to them. All of the horizontal forces acting on each object are shown in the diagrams. Identify the example(s) that demonstrate(s) a change in motion.
Answers
The horizontal forces acting on each object are shown in the diagrams would only cause a change in motion in diagram A
When does force cause a change in motion?A force causes a change in motion when it is unbalanced, meaning there is a net force acting on an object. According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue to move in a straight line at a constant speed, unless acted upon by an unbalanced force.
When an unbalanced force acts on an object, it will accelerate, meaning its velocity will change.
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Why soft iron is used in transformers?
Answers
Answer:
Because soft iron cores have excellent magnetic permeability, which focuses magnetic lines of force and reduces energy loss.
So soft iron has a high permeability, and that allows full coupling of magnetic flux from the main coil to the secondary coil in the core of a transformer
If a quarterback gets hit by a defensive lineman with a mass of 100 kg and accelerating at a rate of 1m/s2 at what force is the quarterback getting hit?
Answers
The quarterback is getting hit with a force of 100 Newtons.
How to calculate the force with which the quarterback is getting hit
We can use Newton's second law of motion:
Force = Mass * Acceleration
Given that the mass of the defensive lineman is 100 kg and the acceleration is 1 m/s², we can substitute these values into the equation:
Force = 100 kg * 1 m/s²
Force = 100 N
Therefore, the quarterback is getting hit with a force of 100 Newtons.
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