Answers
For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport. They move the same direction as the wave.
Related Questions
A baseball of mass 1.23 kg is thrown at a speed of 65.8 mi/h. What is its kinetic energy?
Answers
Given:
The mass of the ball is
\(m=1.23\text{ kg}\)The speed of the ball is
\(\begin{gathered} v=65.8\text{ mi/h} \\ \end{gathered}\)Required: calculate the kinetic energy of the baseball
Explanation: to calculate the kinetic energy of a body we will use the formula as
\(K.E=\frac{1}{2}mv^2\)first, we convert velocity from mi/h into m/s.
we know that
\(1\text{ mi=1609.34 m}\)and
\(1\text{ h=3600 sec}\)then the velocity is
\(\begin{gathered} v=\frac{65.8\times1602.34\text{ m}}{3600\text{ s}} \\ v=29.29\text{ m/s} \end{gathered}\)now plugging all the values in the above formula, we get
\(\begin{gathered} K.E=\frac{1}{2}mv^2 \\ K.E=\frac{1}{2}\times1.23\text{ kg}\times(29.29\text{ m/s})^2 \\ K.E=527.61\text{ J} \end{gathered}\)Thus, the kinetic energy of the baseball is
\(527.61\text{ J}\)Lab reporton motin please help me answer all queastions 1-11 thank you
Answers
Answer:
yor welcome
Explanation:
hi
what is the terminal velocity of blood
Answers
Answer:
25.1
Explanation:
Writing in Science
5. Identify all the different forms of energy
and all the energy transformations that you
see in the picture below. Write your
response in your Science Journal. sc.7.P.11.2
Answers
The different forms of energy involved here are sound energy, potential energy, kinetic energy and heat energy, potential energy changes into heat energy and sound energy to kinetic energy.
What is energy transformation?Energy conserved in nature and their soul cannot be created nor destroyed in an isolated system there is always a change of energy from one form of energy to another.
What is conservation of energy?Conservation of energy states that in an associated system we cannot create and destroy energy it always transforms one form of energy to another.
According to the question:
A person hits a ball with a golf stick.
Here first the person stretches his arm generating potential energy as it hits the ball this potential energy gets converted into three types of energy simultaneously.
First it will convert into heat energy some part of potential energy will also convert into sound energy and finally the large part of the potential energy will get converted into kinetic energy.
Therefore, The different forms of energy involved here are sound energy potential energy kinetic energy and heat energy, potential energy changes into heat energy and sound energy to kinetic energy.
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A crate of mass 20 kg is being pushed by a person with a horizontal force of 63 N, moving with a constant velocity. Find the coefficient of kinetic friction.
Answers
Givens.
• The mass is 20 kg. (m = 20kg)
,• The applied force is 63 N. (F = 63 N).
First, we have to make a free-body diagram to visualize the problem and its vectors.
Use Newton's Second Law for the horizontal vectors and vertical vectors.
\(\begin{gathered} \Sigma F_x=ma=0\to F-F_{\mu}=0 \\ \Sigma F_y=ma=0\to N-W=0 \end{gathered}\)Use the equations for weight and friction force.
\(\begin{gathered} W=mg \\ F_{\mu}=\mu N=\mu mg \end{gathered}\)\(F-\mu N=0\to F=\mu N\to\mu=\frac{F}{N}\to\mu=\frac{F}{mg}\)Where F = 65 N, m = 20kg, and g = 9.8 m/s^2.
\(\begin{gathered} \mu=\frac{65N}{20\operatorname{kg}\cdot9.8(\frac{m}{s^2})} \\ \mu=\frac{65N}{196N} \\ \mu\approx0.33 \end{gathered}\)Therefore, the kinetic friction coefficient is 0.33.
10. In a laboratory experiment, students recorded the
following length data: 12.2 cm, 12.1 cm, 12 cm,
11.9 cm, and 12.20 cm. (a) Determine the average
length and express the answer using the correct
number of significant figures. (b) Based on your
average length calculation in part (a), discuss the
importance of recording measurements to the
appropriate number of significant figures.
Answers
a) 12.1 Average.
B) It is important to record measurements to the correct number of significant figures because otherwise, the integrity of the number is compromised.
What does the average?A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set. When a data collection is ranked from least to greatest, the median is the midpoint.The mean, median, and mode are the three primary varieties of average. Each of these methods operates slightly differently and frequently yields values typically a little off. The average that is most frequently used is the mean. You add all the values and divide this sum by the total number of values to obtain the mean value.Averages are mostly used to track changes over time within a sample group or cohort.Since averages can be used to compare different quantities of the same category, we employ them. The calculation of averages has limits since it cannot reveal how something is distributed among individuals. For instance, the distribution of income is not shown by per capita income.A) Determine the average length and express the answer using the correct number of significant figures:
12.2+12.1+12=36.3/3 = 12.1 Average.
B) Based on your average length calculation in part a, discuss the importance of recording measurements to the appropriate number of significant figures:
It is important to record measurements to the correct number of significant figures because otherwise, the integrity of the number is compromised.
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How to solve conservation of momentum
Answers
Answer:
Step 1: List the mass and velocity of the object. Step 2: Convert any values into SI units (kg, m, s). Step 3: Multiply the mass and velocity of the object together to get the momentum of the object.
Describe the motion of an object experiencing blueshift
Answers
A source travelling in the direction of the observer causes Doppler blueshift.
When an object is moving towards us, the light from the object is known as blueshift.
The phrase refers to any relative motion, that causes a decrease in the wavelength and rise in frequency, including those that take place outside of the visible spectrum.
During the motion of the object towards us, blueshift will happen, thus shifting light to shorter wavelengths on the blue side of the spectrum.
This causes the color to shift from the red to the blue end of the spectrum in visible light.
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When a star has fused most of its hydrogen and begins to collapse inward, it becomes a
Answers
Mental processes refers to
overt actions and reactions.
only animal behavior.
internal, covert processes.
outward behavior.
Answers
You perform an experiment to test how far a cannon will shoot a performer at
different angles. The data are shown below.
Angle
Distance (feet)
110
32°
36°
120
40°
128
440
133
48°
127
52
119
56°
109
60°
100
64°
91
68°
77
72°
63
At which angle will the performer travel the longest distance?
Answers
Answer:
44°
Explanation:
Look for the longest distance under the 'Distance ' column....look to the left to find the corresponding angle
Table clearly shows that the longest distance (133 ft) occurs at angle of 44°
Answer and I will give you brainiliest
Please I need a surely answer
Answers
Answer:
ConstantExplanation:
Please don't comment in this question's comment box
ThanksAnswer:
constant
I hope im right !!!
High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The engineers have calculated the maximum horsepower for the engine to be 630HP
. Twenty five engines are randomly selected for horsepower testing. The sample has an average maximum HP of 650
with a standard deviation of 60HP
. Assume the population is normally distributed.
Step 1 of 2 : Calculate a confidence interval for the average maximum HP for the experimental engine. Use a significance level of α=0.01
. Round your answers to two decimal places.
Answers
The 99% confidence interval for the average maximum HP for the experimental engine is (610.12, 689.88).
To calculate the confidence interval for the experimental engines' average maximum HP, we can use the following formula:
To find the z-score for α=0.01, we can refer to a standard normal distribution table or use a calculator. The z-score is approximately 2.58.
Substituting the given values into the formula, we get:
CI = 650 ± 2.58*(60/√25) CI = 650 ± 30.96
Rounding to two decimal places, the confidence interval for the experimental engines' average maximum HP is:
CI = [619.04 HP, 680.96 HP]
Therefore, we can say with 99% confidence that the true average maximum HP for the experimental engines falls between 619.04 HP and 680.96 HP. Thus, we can conclude that the experimental engines' average maximum HP is likely to be within this range. However, note that this range does not include the manufacturer's claimed maximum HP of 630 HP, which may indicate that the engines are performing below expectations.
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Describe what is required for work to be considered done by a physicist. Give an example in two or more complete sentences.
Answers
For work to be considered done by a physicist, it must involve the application of physics principles and concepts to solve a problem or answer a research question. This can involve theoretical work, such as mathematical modeling, or experimental work, such as designing and conducting experiments to test hypotheses.
An example of work done by a physicist would be the design and analysis of experiments to study the properties of a new material. This could involve developing a theoretical model to predict the behavior of the material, designing and building experimental apparatus, conducting experiments, and analyzing the resulting data using statistical and mathematical techniques. The physicist would use their knowledge of physics principles and concepts to interpret the data and draw conclusions about the properties of the material.
Can you help me with this question please
Answers
Answer:
9.6 Ω
Explanation:
Notice that this circuit is the same as the one shown in the attached image.
Then we calculate the parallel of R1 and R3 first:
Since R1 = 30 Ω and R2 = 20 Ω, the parallel equivalent of this is 12 Ω and this in series with R5 (4 Ω) is 16 Ω.
Now we calculate the parallel circuit of the three resistors
40 Ω, 60 Ω, and 16 Ω, which gives us: 9.6 Ω
Say an impulse is applied opposite the go-kart's direction of travel. What happens to
the go-kart if its momentum + impulse = 0?
The go kart stops comes to a stop.
The go kart slows down but keeps moving.
The go kart speeds up.
There is no change in the speed of the go kart.
Answers
If the impulse is strong enough and lasts for a sufficient amount of time, the go-kart will eventually come to a stop.
Option A is correct.
What is meant by impulse?impulse is described as the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector quantity.
If the force is insufficient to stop the go-kart entirely, it will slow down but continue to move. The force and duration of the impulse, along with the mass and speed of the go-kart, will all affect how much deceleration occurs.
Given that momentum plus impulse equals zero, the go-kart's change in momentum as a result of the impulse will be equal in amount but will move in the opposite direction of its original momentum.
As a result, the go-kart's final momentum will be zero, suggesting that it has either stopped or is travelling very slowly.
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How can you determine the number of neutrons in an atom?
A. Mass number plus number of electrons
B. Atomic number minus mass number
C. Mass number minus atomic number
D. Atomic number plus mass number
Answers
Answer:
B. Atomic number minus mass number
Explanation:
A soccer player runs 75m in a straight line down a soccer field in 11 seconds. What
was her average speed?
Answers
Answer:
6.9m
Explanation:
I divide 75m by 12 seconds.
Please give BRAINLIEST
How to give the spheres exactly equal but opposite charges?
A. Make sure spheres are not in contact with each other. Rub the glass rod on the silk to charge the rod positively (hence to charge piece of silk negatively). Bring the rod near, but not touching, one of the spheres. Do the same with piece of silk and another sphere. Remove the galss rod and the piece of silk.
B. Make sure spheres are not in contact with each other. Rub the glass rod on the silk to charge the rod positively (hence to charge piece of silk negatively). Touch one of the spheres with the glass rod then touch another one with the piece of silk.
C. Put the two metal spheres in contact with each other. Then rub the glass rod on the silk to charge the rod positively (hence to charge piece of silk negatively). Touch one of the spheres with the glass rod then separate the spheres. Touch another sphere with the piece of silk.
D. Put the two metal spheres in contact with each other. Then rub the glass rod on the silk to charge the rod positively (hence to charge piece of silk negatively). Bring the rod near, but not touching, one of the spheres. Separate the spheres and remove the rod.
Answers
Answer:
B) Make sure spheres are not in contact with each other. Rub the glass rod on the silk to charge the rod positively (hence to charge piece of silk negatively). Touch one of the spheres with the glass rod then touch another one with the piece of silk.
Explanation:
In static electricity, frictional rubbing can excite electrons, and make them jump from one material to another. Rubbing the glass rod and the silk together makes electron flow from the glass rod to the silk piece. On separation, the rod and silk will be seen to have equal amount of charge but, the glass rod will be positively charged from losing electron, and the silk piece will be negatively charged from gaining extra electrons. When they are each made to touch the metal spheres that are not in contact, the spheres will acquire equal amount of charges opposite the charge on the material that was used to charge them.
Answer:
Friction
Explanation:
Two burglars are running down a street alley. Jack is carrying a metal safe and Jill
is carrying antique quilts. They accidentally run full speed into a concrete wall.
Who is hurt more? *
Answers
Answer: jack
Explanation: hes carrying a metal safe they run into a concrete wall he is hurt the most because his is metal jills is just quilts
When they accidentally run full speed into a concrete wall, Jack will hurt more than Jill.
What is collision?A collision in physics is any situation in which two or more bodies quickly exert forces on one another. Despite the fact that the most common usage of the word "collision" refers to situations in which two or more objects clash violently, the scientific usage of the word makes no such assumptions.
As Jack is carrying a metal safe , when he accidentally runs full speed into a concrete wall, the collision will be elastic in nature. So, he will hurt by all portion of his kinetic energy.
But as Jill is carrying antique quilts, when he accidentally runs full speed into a concrete wall, the collision will be inelastic in nature. So, some portion of kinetic energy will be lost. Hence, Jack will hurt more than Jill.
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Particles q₁ +8.0 μC, q2 +3.5 μC, and
93-2.5 μC are in a line. Particles q₁ and q2 are
separated by 0.10 m and particles q2 and q3 are
separated by 0.15 m. What is the net force on
particle q₂?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
+8.0μ.C
+91
0.10 m
+3.5 C
+92
0.15 m
-2.5μ C
93
Answers
The net force on particle q₂, located between particles q₁ and q₃, is approximately 189000 N. The force exerted by particle q₁ on q₂ is positive and equals 252000 N, while the force exerted by particle q₃ on q₂ is negative and equals -63000 N.
To find the net force on particle q₂, we need to calculate the individual forces exerted on q₂ by particles q₁ and q₃ and then determine their sum.
The force between two charged particles can be calculated using Coulomb's law:
F = k * |q₁ * q₂| / r²
Where F is the force between the particles, k is the electrostatic constant (k ≈ 9.0 x \(10^9\) Nm²/C²), q₁ and q₂ are the charges of the particles, and r is the distance between them.
First, let's calculate the force exerted on q₂ by q₁:
F₁₂ = k * |q₁ * q₂| / r₁₂²
F₁₂ = (9.0 x \(10^9\) Nm²/C²) * |(8.0 μC) * (3.5 μC)| / (0.10 m)²
F₁₂ ≈ 252000 N
The force is positive because q₁ and q₂ have opposite charges.
Next, let's calculate the force exerted on q₂ by q₃:
F₂₃ = k * |q₂ * q₃| / r₂₃²
F₂₃ = (9.0 x \(10^9\)Nm²/C²) * |(3.5 μC) * (-2.5 μC)| / (0.15 m)²
F₂₃ ≈ -63000 N
The force is negative because q₂ and q₃ have the same charge.
Finally, we can find the net force on q₂ by summing the individual forces:
Net force = F₁₂ + F₂₃
Net force = 252000 N + (-63000 N)
Net force ≈ 189000 N
The net force on particle q₂ is approximately 189000 N.
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URGENT!! ILL GIVE
BRAINLIEST!!!! AND 100 POINTS!!!!!
Answers
Answer: C
Explanation: An object that has less mass will help it move more quickly and the more intertia it has the faster it accelerates.
Hope this helps.
for physics a circuit has a current of 2a and a potential diffrence of of 6v what is the resistence of a bulb in its circuit
Answers
The resistance of the bulb in the circuit, given that the circuit has a current of 2 A and a potential diffrence of of 6 V is 3 ohms
How do I determine the resistance of the bulb?We understood from Ohm's laws that the potential difference (V), current (I) and resistance (R) are related by the following formula:
Potential difference (V) = Current (I) × resistance (R)
V = IR
From the question given above, the following data were obtained:
Current (I) = 2 APotential difference (V) = 6 VResistance (R) = ?Applying the above formula, we can obtain the resistance of the bulb can be obtained as shown below:
Potential difference (V) = Current (I) × resistance (R)
6 = 2 × resistance
Divide both sides by 2
Resistance = 6 / 2
Resistance = 3 ohms
Thus, from the above calculation, we can conclude that the resistance of the bulb is 3 ohms
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two bodies of masses 10 kg and 4 kg are moving in opposite direction with the same velocity of 5 m per second if they Collide and stick together after the impact calculate their velocities
Answers
Answer:
dasd
Explanation:
dsdas
Problem-1 A gelatin block with mass 1.00kg is sitting at rest on top of a horizontal surface. The
coefficient of kinetic friction between the block and the surface is 0.70.
A small steel ball with mass 10.9g is moving horizontally directly at the center of the block with a speed
of 853m/s. The ball then collides with the block and gets stuck inside of it.
(a) Assuming that the block stays in one piece, how much of the initial kinetic energy of the ball was
converted into overall (heat + light + sound + material distortions) energy during the collision?
KE = 1/2
KE=
- lov
ми
2
10-9x 853
bo
= 3.9655X 10
Answers
4014 joules of energy are lost as a result of heat, light, sound, and material deformation.
What is the energy conservation law?
According to the principle of energy conservation, energy cannot be created or destroyed. However, it is capable of changing its form. An isolated system's total energy is constant regardless of the types of energy that are present.The law of energy conservation applies to all energy forms. The law of conservation of energy basically states that all energy is conserved in closed systems, or systems that are isolated from their environment.The ball's kinetic energy is 1/2 x 0.0109 x 8632 = 4058 joule.
the block's kinetic energy following the inelastic collision
= 1/2(1 + 0.0109)(0.0109×863/1.0109)² joule.
= 43.77 joule.
Thus, energy loss due to heat, light, sound, and material distortions is equal to 4058 joule minus 43.77 joule, or 4014 joule.
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Analysis and Conclusion.
1. Which compound dissolved more easily?
2. Which compound had the lower boiling point?
3. Are the answers to 1 and 2 the same compound? What does this tell you about the strength
of the bonds in this compound?
4. Which compound is the sugar?
5. Which compound is the salt?
Answers
The compound identified as sugar would be the organic compound, such as sucrose (C12H22O11).The compound identified as salt would be the ionic compound, such as sodium chloride (NaCl).
To determine which compound dissolved more easily and had the lower boiling point, we need more specific information about the compounds being compared. However, assuming we are comparing a typical organic sugar compound, such as sucrose (C12H22O11), with a common ionic salt compound, such as sodium chloride (NaCl), we can draw some conclusions.
The salt compound (NaCl) would generally dissolve more easily than the sugar compound (C12H22O11). This is because salt is composed of ions, which readily dissociate in water due to the polar nature of water molecules. Sugar, on the other hand, is a covalent compound and requires breaking of covalent bonds for dissolution, which is typically a slower process.
The sugar compound (C12H22O11) would generally have a higher boiling point compared to the salt compound (NaCl). Covalent compounds tend to have higher boiling points than ionic compounds due to the stronger intermolecular forces between covalent molecules.
No, the answers to 1 and 2 do not refer to the same compound. The strength of the bonds in the sugar compound (covalent) is different from the strength of the bonds in the salt compound (ionic).
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Part B
A roller coaster ride starts with the roller coaster car being pulled to the top of the first hill with pulley system. The car is
released from the top with an initial velocity close to zero, then accelerates downward. From that first hill, the roller coaster just
coasts; there is no driving force, other than gravity, to keep It going. Assuming no friction, what can you say about the height of
the other hills in the roller coaster ride?
Answers
The highest point of a roller coaster is almost always the first hill. In the majority of roller coasters, the hills get smaller as the train travels down the track.
To find the answer, we have to know more about the mechanical energy of a system.
How to find the answer?Since it influences the mechanical energy of the system, the first hill must be the highest.One of the fundamental tenets of physics is that, in the absence of friction, mechanical energy must be conserved. Mechanical energy is the product of kinetic energy and potential energy.When the vehicles ascend the first hill on the roller coaster, mechanical energy is provided to the system because the speed is zero at this point.Mechanical energy = U = mgh
Where m represents the car mass, g represents gravity, and h represents height
If the system is to continue moving, the other hills on the mountain must be lower than the first hill. When the vehicles are released, this energy is converted into kinetic and potential energy when it lowers and ascends, but the sum of these two cannot be larger than the starting energy.Finally, by applying the principle of energy conservation, we may determine that, the initial hill must be the highest.
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What force pushes the plane upwards
Answers
Answer: The force that pushes a plane upwards is the lift generated by the wings as the plane moves through the air. The lift force is created by the difference in air pressure above and below the wings, which creates an upward force that opposes the weight of the plane.
A strongman in a competition must throw a heavy cement sphere as far as he can up into the air. How high must he throw a 65.0kg sphere to give it 2,000J of potential energy?
Answers
Answer:
Explanation:
PE = mgh
h = PE/mg
h = 2000/(65.0(9.81))
h = 3.1365168979...
h = 3.14 m
a VERY strong man if he can do that!
an object is thrown into the air and follows the path shown in the diagram above. Neglecting air resistance, which vector best represents the acceleration of the object at point A?
Answers
Answer: 3 (c)
Explanation: The only force acting on the object is the force of gravity, mg, which acts straight downward. Even though the object has horizontal velocity, there is no horizontal force after the object is done being thrown.