if the sound source is moving then the pitch of the sound will ______to the observer.
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Related Questions
Planet Force (N) Mass (kg)
A 8.0 0.50
B 30 3.0
C 45 3.0
D 60 6.0
The gravitational force acting on various masses is measured on different planets. Measured values for the forces acting on the corresponding masses are shown in the data table. Analyze the data and develop a method for comparing the gravitational field strengths on the different planets. Use your method to compare the gravitational field strengths, and report your conclusions.
Answers
From the analysis, it can be concluded that planet A has the strongest gravitational field, followed by planet C, and planets B and D have the same gravitational field strength.
The gravitational force acting on various masses is measured on different planets. The table shows the measured values for the forces acting on the corresponding masses:Planet Force (N) Mass (kg)A 8.0 0.50B 30 3.0C 45 3.0D 60 6.0
Method for comparing the gravitational field strengths on the different planets:First, we can use the formula for calculating gravitational force: \(`F = G (m_1m_2 / r^2)`\)where G is the universal gravitational constant `\(6.67 * 10^{-11 }Nm^2/kg^2\), m1 and m2 are the masses of the two objects in kg, and r is the distance between the centers of the objects in meters.
We know that the force is proportional to mass (F = ma). So we can calculate the acceleration due to gravity (g) on each planet by dividing the force by the mass. Therefore, we can use the formula: `g = F / m`.
Comparing the gravitational field strengths on the different planets:We will calculate the acceleration due to gravity (g) on each planet.
For planet A: `
g = F / m
= 8.0 N / 0.50 kg
= 16 \(m/s^2\)`
For planet B: `g = F / m
= 30 N / 3.0 kg
= 10 \(m/s^2\)
For planet C: `g = F / m
= 45 N / 3.0 kg
= 15 \(m/s^2\)
For planet D: `g = F / m
= 60 N / 6.0 kg
= 10 \(m/s^2\)
`So we see that planet A has the strongest gravitational field, followed by planet C, then planet B and planet D have the same gravitational field strength.
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What is spring-mass-damper system formula?
Answers
The formula of a spring-mass-damper system is given by md2x/dt2 + cdx/dt + kx = F(t).
The spring-mass-damper system is a common model used in physics and engineering to describe the behavior of various mechanical systems, such as a car suspension system or a building during an earthquake. The equation of motion for a spring-mass-damper system is typically given by:
md2x/dt2 + cdx/dt + kx = F(t)
where m is the mass of the object attached to the spring and damper, x is the displacement of the mass from its equilibrium position, t is time, c is the damping coefficient, k is the spring constant, and F(t) is an external force applied to the system at time t.
The term md2x/dt2 represents the acceleration of the mass, while cdx/dt represents the damping force (i.e. resistance to motion) caused by the damper, and kx represents the force exerted by the spring. The external force F(t) can be any force applied to the system, such as an oscillating force or a constant force.
The solution to this differential equation depends on the initial conditions (i.e. the initial position and velocity of the mass) and the specific values of the parameters m, c, and k. The behavior of the system can be analyzed using various techniques, such as finding the natural frequency of the system or using numerical simulations to model the motion over time.
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Which one of the following statements is true concerning the electrostatic charge on a conductor?
A. It is uniformly distributed throughout the volume
B. It is confined to the surface and is uniformly distributed
C. Most of the charge is on the outer surface, but it is not uniformly distributed
D. It is entirely on the surface and it is distributed according to the shape of the object
E. It is dispersed throughout the volume of the object and distributed according to the object's shape
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The correct statement concerning the electrostatic charge on a conductor is “it is entirely on the surface and it is distributed according to the shape of the object” (D)
In the presence of an electric field, it is known that free electrons in a conductor will either drift or be forced to move in response to the field. Within the conductor, the electrons distribute themselves in such a way as to ensure that the ultimate electric field at every point within the conductor is zero.
Near the edge of a conductor, the electric field lines are oriented perpendicular to the surface of the wire, and they terminate or begin on charges that are located there. The surface or surfaces of a conductor are the only locations where an excess charge can be found.
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A spring has a constant of 2000 N/m. If 1000 kg is placed on the spring
how far in meters will it compress?
Answers
The compression in the spring will be 4.9m
What is spring force?
The force needed to compress or extend a spring attached to an object is known as the spring force. A spring exerts an equal and opposite force on a body when the object exerts a force on it. It always acts to bring mass back to its equilibrium. Spring force exerted by the spring on the body is given by = where k is the spring constant of the spring x is the compression or extension caused in the spring. To find the x we can use this formula.
Now, according to the question we have
Spring constant=2000N/m
Mass attached to the spring=1000Kg
On substituting the values in the above formula, we get the compression as
F=kx
mg=kx
1000×9.8=2000×x
x=4.9m
Therefore, the compression in the spring is 4.9m
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Suppose your class invites a person to give a speech. When you test out the sound system in the gym you find there are so many echoes the speaker cannot be understood. What needs to be done to fix this problem?
Answers
Answer:
You either need to lower the volume so the sounds intensity is lessened. Or you can pad the walls to absorb the sound rather than defect.
Explanation:
Sound intensity allows it to be heard further, but in an enclosed room it will start returning. Sound will deflect off of hard objects do to its interactions with solids. A softer and foamy material can dampen it.
so I'm 6'0 and I'm in high school and I'm really good at football and basketball but I only want to choose one what do yall think
Answers
Answer:basketball
Explanation: football is a one way ticket to brain damage
A hose is held at 3 ft above ground level; water leaves the nozzle at a velocity of 15 ft/s, at an angle of 60 degrees from horizontal.
(a) How high will the jet of water rise?
(b) At what distance will the jet of water hit the ground?
(c) Using the head form, show that Bernoulli's equation is satisfied by comparing three points: (
i) exiting the nozzle,
(ii) at maximum elevation, and
(iii) just as the water hits the ground. Remember that the "V" in Bernoulli's equation is tangential (streamwise) velocity, not one or the other of its components.
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In this problem, water is being sprayed from a hose nozzle at a certain velocity and angle. The objective is to determine the maximum height reached by the water jet, the horizontal distance at which it hits the ground, and to verify the application of Bernoulli's equation at three different points along the trajectory.
(a) To calculate the maximum height reached by the water jet, we can use the equations of projectile motion. By considering the initial vertical velocity, the acceleration due to gravity, and the time it takes for the water to reach its highest point, we can determine the maximum height.
(b) The horizontal distance at which the water jet hits the ground can be calculated by considering the horizontal velocity and the time it takes for the water to hit the ground. This can be found by using the equations of projectile motion.
(c) Bernoulli's equation relates the pressure, velocity, and elevation of a fluid along a streamline. By comparing the three points mentioned in the problem, we can verify if Bernoulli's equation is satisfied. The key is to consider the streamwise velocity, which is the component of velocity tangent to the streamline. By comparing the pressure, elevation, and streamwise velocity at the three points, we can check if the equation holds true.
By applying the relevant equations and calculations, the answers to (a) and (b) can be obtained, and the verification of Bernoulli's equation can be demonstrated by comparing the relevant parameters at the specified points along the water jet's trajectory.
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What is the atomic mass of fluorine rounded to the nearest whole number?
Answers
Answer:
195
Explanation:
explain about ohm's law.
Answers
Answer:
Statement:
The electric current passing through a conductor is directly proportional to the potential difference across its ends provided temperature and other physical conditions remain constant.
Explanation:
Current is directly proportional to voltage loss through a resistor. That is, if the current doubles, then so does the voltage. To make a current flow through a resistance there must be a voltage across that resistance. Ohm's Law shows the relationship between the voltage (V), current (I) and resistance (R).
V∝I or I∝V⇒V=IR.
Explanation:
Ohm's law states that the current through a conductor is proportional to the voltage across the conductor. This is true for many materials (including metals) provided the temperature (and other physical factors) remain constant. The constant of proportionality, R,R is the resistance and the unit is the ohm, with symbol \Omega,Ω. The relationship can be written as:
V, equals, I, R.
V=IR
where V,V is the voltage across the conductor and I,I is the current flowing through it. If a component is ohmic (it obeys Ohm's Law), then its resistance must be independent of current and voltage.
What percentage of the speed of light will an electron be moving after being accelerated through a potential difference of 1,485 Volts?
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The voltage generates a force over the electron, this force is the one we use to calculate the acceleration
\(\begin{gathered} V=\frac{Fd}{q} \\ 1485V\cdot1.602\cdot10^{-19}=Fd=2.38\cdot10^{-16} \end{gathered}\)\(\begin{gathered} Fd=m(a\cdot d) \\ m(ad)=2.38\cdot10^{-16} \\ ad=\frac{2.38\cdot10^{-16}}{9.109\cdot10^{-31}}=2.612\cdot10^{14} \end{gathered}\)\(\begin{gathered} vf^2=vi^2+2ad \\ vf=\sqrt{2\cdot2.612\cdot10^{14}} \\ vf=22.85\cdot10^6m/s \end{gathered}\)First, we apply the energy equation to find the Fd result based on voltage. Then we find the acceleration times distance. Finally, we find the speed with a kinematic equation.
Now I'm going to find the percentage of the speed of light.
\(\frac{22.85\cdot10^6}{3\cdot10^8}=0.0762=7.62\%\)which of these correctly compares the masses of different objects in the universe?
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A moon has more mass than the planet it circles and less mass than a star.
Do planets have a greater mass than stars?
By this definition, "stars" must be larger than planets in terms of mass. The size of a white dwarf would be comparable to that of a moon or small planet, but its mass would be approximately 200–1300 times that of Jupiter. Even more extreme are neutron stars, which are about the size of an asteroid but have a mass of several thousand Jupiters.
Why is the weight of the same object different on different planets Class 7?
The weight of an object is determined by its mass and the gravitational force that it experiences. The separation between two objects affects how strong gravity is. Because of this, an object weights differently on many planets.
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why does toilet seats stay cold even when the room temperature is warm?
Answers
Answer:
lol While plastic and wood aren't great thermal conductors, they conduct heat faster than air does. Even if the toilet seat is at the same temperature as the air around it, it will feel colder to your but t because heat will move from your skin to the seat at a faster pace Air just doesn't conduct heat very quickly.
Explanation:
A bird on a long migration flies 63 kilometers per hour for 2900 kilometers. How long does he fly?
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I need help and I don't understand if you can help me but let it be before 6:00
Answers
Answer:
balanced: a train moving at a constant speed, the moon orbiting the earth at a constant speed, a lamp sitting on a desk, an apple hanging on a tree
unbalanced: a skier coming down a mountain, a car accelerating from the start line, a soccer ball after it was kicked, a parachuter falling to ground
Explanation:
all the balanced ones are either moving at a constant speed or are skill
all the unbalanced ones were disturbed by some sort of force causing them to accelerate, go faster, blah blah blah
in a meter of 3 how many beats are in a measure also this is for music
Answers
Answer:
3 i think
Explanation:
hope this helps also Hiiii
A student conducted a scientific investigation on the magnetic properties of iron. She used a magnet to try to pick up
iron nails
After making several observations, which question can she answer?
O Which part of a magnet is strongest at attracting iron?
O How fast does iron lose its magnetism?
O What is the importance of studying the magnetic field of a magnet?
How does the color of iron change with exposure to air?
Mark this and return
Save and Exit
RE
S
Answers
Answer:
she can answer : which part of the magnet is said strongest at attracting iron & how fast does iron lose its magnetism?
the frequency of a mass-spring oscillator depends on (select all that apply)
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The frequency of a mass-spring oscillator depends on the mass of the object and the stiffness of the spring.
In a mass-spring oscillator, the frequency is determined by the mass (m) of the object attached to the spring and the spring constant (k), which represents the stiffness of the spring. The relationship between these factors can be expressed using the formula:
f = (1 / 2π) √(k / m)
In this formula, f represents the frequency of the oscillator. As the mass of the object increases, the frequency decreases, since the system takes more time to complete one oscillation. Conversely, as the spring constant increases, indicating a stiffer spring, the frequency also increases, as the system oscillates more quickly.
This relationship demonstrates that both the mass and the spring constant play a crucial role in determining the frequency of a mass-spring oscillator. By understanding and manipulating these factors, it is possible to control the behavior of such oscillating systems, which have numerous applications in fields such as engineering, physics, and mechanics.
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Describe 2 potential problems or limitations of ratio
analysis.
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2. Overlooking External Factors: Ratio analysis primarily focuses on internal operations of a company, but there are various external factors like market conditions, industry trends, and economic cycles that can significantly impact a company's performance. These factors might not be reflected directly in the financial ratios, thus potentially leading to an incomplete understanding of the company's overall situation.
What voltage is likely to be available from the battery of an electric vehicle or hybrid?
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Operating voltages for hybrid and battery-electric car batteries currently range from 200 to 800 volts.
What voltage is anticipated to be made accessible from a hybrid or electric car's battery?For hybrid and plug-in hybrid vehicles, the typical nominal pack voltages range from 100V to 200V, while for electric-only vehicles, they range from 400V to 800V and higher. This is because copper cables of the same diameter (and mass) can carry more power with less loss while operating at higher voltages.
What is the battery voltage in an electric car?A sophisticated lithium-ion battery powers your electric vehicle or plug-in hybrid, but you'll also likely find a lead-acid 12-volt battery someplace. Keep your jumper cables around till later.
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3. How many nodes and antinodes are formed when the wire vibrates in fundamental mode?
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Answer:Two nodes and one antinodes .
Explanation:
What is the full meaning of ROYGBIV?
Answers
Answer:
Red, orange, yellow, green, blue, indigo and violet.
Explanation:
Hope I helped! cute copy and paste ☏ ♡ ☆⋆◦★◦⋆°*•°
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⭐ Hii ⭐
➡️ Abbreviation for shades of colors often described as creating rainbows: red, orange, yellow, green, blue, indigo, and violet. Its beginning is sometimes called VIBGYOR in reverse order.
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During a medieval siege of a castle, the attacking army uses a trebuchet to heavy stones at the castle the trebuchet launches the stones with a velocity of + 48.5 m/s at an angle of 42.0 degrees how long does take the stone to hit the ground? For those settings, what is the maximum How high will the stones go Show all your work
Answers
Answer:
Explanation:
The question relates to time of flight of a projectile .
Time of flight = 2 u sinθ / g
u is speed of projectile , θ is angle of projectile
= 2 x 48.5 sin42 / 9.8
= 6.6 seconds .
Maximum height attained
= u² sin²θ / g
= 48.5² sin²42 / 9.8
= 107.47 m .
how much power is requiered to do 100j of work on time of 0.5 seconds
Answers
Answer:
200 w
Explanation:
p= w/t= 100 j/ 0.5 s= 200 w
Answer:
Answer is 200 W
Explanation:
p= w/t= 100 j/ 0.5 s= 200 w
Can a 20 N force and 40 N force ever produce a resultant with magnitude of 27 N?
Answers
Sure ,Let's find angle between forces
Vectors be A and B and resultant be R\(\\ \sf\longmapsto R^2=A^2+B^2+2ABcos\theta\)
\(\\ \sf\longmapsto 27^2=20^2+40^2+2(20)(40)cos\theta\)
\(\\ \sf\longmapsto 729=400+1600+1600cos\theta\)
\(\\ \sf\longmapsto 729=2000+1600cos\theta\)
\(\\ \sf\longmapsto 1600cos\theta=-271\)
\(\\ \sf\longmapsto cos\theta=-0.169\)
\(\\ \sf\longmapsto \theta=cos^{-1}(-0.169)\)
\(\\ \sf\longmapsto \theta=80.2°\)
A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. The spring has a spring constant K , the ball has a mass M , and the ramp rises a height Y above the table, the surface of which is a height H above the floor.
Initially, the spring rests at its equilibrium length. The spring then is compressed a distance S , where the ball is held at rest. The ball is then released, launching it up the ramp. When the ball leaves the launching ramp its velocity vector makes an angle THETA with respect to the horizontal.
Throughout this problem, ignore friction and air resistance.
1)Relative to the initial configuration (with the spring relaxed), when the spring has been compressed, the ball-spring system has?
A)gained kinetic energy
b)gained potential energy
C)lost kinetic energy
D)lost potential energy
2) As the spring expands (after the ball is released) the ball-spring system?
A)gains kinetic energy and loses potential energy
b)gains kinetic energy and gains potential energy
c)loses kinetic energy and gains potential energy
d)loses kinetic energy and loses potential energy
3)As the ball goes up the ramp, it?
A) gains kinetic energy and loses potential energy
B) gains kinetic energy and gains potential energy
C) loses kinetic energy and gains potential energy
D) loses kinetic energy and loses potential energy
4) As the ball falls to the floor (after having reached its maximum height), it?
a)gains kinetic energy and loses potential energy
b)gains kinetic energy and gains potential energy
c)loses kinetic energy and gains potential energy
d) loses kinetic energy and loses potential energy
Answers
a. Because the spring is storing potential energy as elastic potential energy, the ball-spring system gains potential energy as the spring is squeezed.
Correct response: B) obtained potential energy.
b. The ball-spring system generates kinetic energy and loses potential energy as the spring expands because the ball's movement transforms the potential energy contained in the spring into kinetic energy.
Answer: A) loses potential energy while gaining kinetic energy.
c. Due to the effort done by gravity as the ball moves up the ramp, it obtains potential energy while losing kinetic energy, increasing its potential energy while lowering its kinetic energy.
A) loses kinetic energy and acquires potential energy.
d. Due to the effort done by gravity as the ball descends to the ground, it receives kinetic energy while losing potential energy, increasing its kinetic energy while lowering its potential energy.
Answer: A) loses potential energy while gaining kinetic energy.
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You wish to start a fire by reflecting sunlight from a mirror onto some paper under a pile of wood. Which would be the best choice for the typeof mirror? (a) flat (b) concave (c) convex
Answers
You wish to start a fire by reflecting sunlight from a mirror onto some paper under a pile of wood which means the best choice of the type of mirror for this operation is a concave one and is denoted as option B.
What is Concave mirror?This type of mirror usually has a reflective surface that is curved inward and away from the light source. They also reflect light inward to one focal point which is done by reflecting all the rays parallel to its axis and converge them at a single point.
For fire to occur, then we need a large concentration of light rays which will help reflect all the sunlight from a mirror onto some paper under a pile of wood thereby causing the fire.
This is therefore the reason why concave mirror was chosen as the most appropriate choice.
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How does Newton's third law explain how a rocket is launched upward?
O A. As the fuel burns, the rocket's mass decreases, allowing it to fly
faster and faster.
O B. Gases from burning fuel are pushed out of the bottom of the
rocket, and these gases push back on the rocket with an equal
amount of force.
C. When the rocket's speed increases, the amount of force needed to
move it decreases.
D. As the rocket accelerates upward, the air resistance pushing
against the rocket decreases.
Answers
Answer: Hi guys! The answer is B.
Explanation:
Got it right on Apex! :)
When a metal ball is charged by induction using a negatively charged plastic rod, what sign is the charge acquired by the metal ball?
Answers
When a metal ball is charged by induction using a negatively charged plastic rod, the charge acquired by the metal ball is positive.
This is because the negatively charged plastic rod attracts the positive charges in the metal ball, causing the negative charges to move away from the rod and towards the opposite end of the metal ball.
This leaves the end of the metal ball closest to the rod with a net positive charge, while the far end of the metal ball retains a net negative charge.
This separation of charges results in a positive charge on the end of the metal ball closest to the negatively charged rod.
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The sun’s surface temperature is about 5800 K. (a) About how much electromagnetic wave energy does a cubic meter of space near the sun’s surface contain? A cubic meter of space near the sun's surface contains ____J/m3 of electromagnetic wave energy. (b) What is the most probable photon energy εp (in eV) for photons emitted by the sun? The most probable energy εp for photons emitted by the sun is ____eV
Answers
(a) A cubic meter of space near the Sun's surface contains approximately 3.96 x 10¹⁶ J/m³ of electromagnetic wave energy.
(b) The most probable photon energy εp for photons emitted by the Sun is approximately 2.48 eV.
Determine the energy density?(a) The energy density of electromagnetic waves can be calculated using the Stefan-Boltzmann law, which states that the energy radiated by a black body is proportional to the fourth power of its temperature.
The formula for energy density is given by u = σT⁴, where u is the energy density, σ is the Stefan-Boltzmann constant (5.67 x 10⁻⁸ W/m²K⁴), and T is the temperature.
Plugging in the values, we have u = 5.67 x 10⁻⁸ x (5800)⁴ = 3.96 x 10¹⁶ J/m³.
Determine the energy of photons?(b) The most probable energy of photons emitted by the Sun can be determined using Wien's displacement law, which relates the temperature of a black body to the wavelength at which it emits the most radiation.
The formula for photon energy is given by εp = hc/λmax, where εp is the photon energy, h is the Planck constant (6.626 x 10⁻³⁴ J⋅s), c is the speed of light (3 x 10⁸ m/s), and λmax is the wavelength of maximum emission.
The corresponding energy can be converted to electron volts (eV) using the conversion factor 1 eV = 1.602 x 10⁻¹⁹ J.
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A coin lies under a glass filled with water.
Explain that you cannot see the coin
Answers
Refraction is the cause of this. We perceive an object when light reflects off of it and travels to our eyes. The penny appears to vanish because light is refracted as it passes through the glass's edges and the water, never reaching our eyes.
Refraction in physics is the change in direction that results from a wave's change in speed as it passes through a medium. The electromagnetic waves that make up light are bent due to their different speeds as they pass past the boundary of one transparent medium and into another.
When partially submerged in water and viewed from an angle other than 90° to the surface, a straight stick seems bent. When travelling from air to glass, a ray of light of a single wavelength (various wavelengths appear as different colours to the human eye) is refracted, or bent, in a way that relies on the speeds of the two mediums.
A straight stick appears bent when partially submerged in water and viewed at an angle other than 90° to the surface. A light ray of a single wavelength—different wavelengths appear as different colors to the human eye—is refracted, or bent, in a way that depends on the speeds of the two media when it travels from air to glass.
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