The speed of a wagon increases from 2.5 meters per second to 9.0 meters per second in 3.0 seconds as it accelerates uniformly down a hill. What is the magnitude of the
acceleration of the wagon during this 3.0-second interval?
A) 0.83m/s2
B) 3.0m/s2
C) 3.8m/s2
D) 2.2m/s2
Answers
creo C amigo yobescojo al alasar
Explanation:
espero que te ayude
If the speed of a wagon increases from 2.5 meters per second to 9.0 meters per second in 3.0 seconds as it accelerates uniformly down a hill , then the magnitude of the acceleration of the wagon during this 3.0 - the second interval would be 2.2 m / s², therefore the correct answer is option D.
What is acceleration?The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².
As given in the problem If the speed of a wagon increases from 2.5 meters per second to 9.0 meters per second in 3.0 seconds as it accelerates uniformly down a hill,
By using the first equation of the motion,
v = u + a × t
9 = 2.5 + a × 3
a = 2.2 m / s²
Thus, the acceleration of the wagon would be 2.2 m / s².
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Related Questions
(b) specify how changes in the optic array affect movement perception.
Answers
Objects move relative to background such that it is covered and uncovered - start walking, the changes that occur in the surfaces, contours and textures provide information for perception.
Signals from the ocular, vestibular, and proprioceptive systems, among others, are used to perceive motion. One sensory system's knowledge is not reliable on its own.
The current illusion demonstrates how motion signals present throughout the scene affect how an object's perceived location is perceived. Evidently, the predominate motion signals across significant portions of visual space affect how any specific object's motion and location are perceived.
The visual system uses the shifting retinal image to deduce the trajectory and 3D structure of the moving object. The visual system infers the motion and structure of an object when the viewer is still and the object is moving.
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The flight of a kicked football follows the quadratic function f(x)=−0. 02x2+2. 2x+2, where f(x) is the vertical distance in feet and x is the horizontal distance the ball travels. How far, in feet, will the ball travel across the field by the time it hits the ground? Round your answer to one decimal place
Answers
The turning point's y-value is indeed the largest. As a consequence, we must discover the greatest quadratic function indicating that perhaps the ball would achieve a height limit of 72.5 feet. Which indicates:
\(x = 110.90\) or \(x = -0.90\)
Given that we're working with time,
\(x = 110.90\)
We have 110.9 feet to the nearest decimal place.
Why is it referred to as a quadratic function?
A quadratic issue is a type of challenge in mathematics that deals with something like a variable multiplication by itself, which is defined as squaring. This language stems from the fact that the area of a square is equal to its line segment multiplied by itself. The term "quadratic" is derived from quadratum, which is the Latin word meaning square.
Describe the three different kinds of quadratic functions?
Quadratics are typically utilized in three ways:
1)Standard Form: y = an x 2 + b x + c y=ax2+bx+c y=ax2+bx+c y=ax2+bx+c.
2)Factored Form: y = a (x r 1) (x r 2) y=a(x-r 1)(x-r 2) y=a(xr1)(xr2) y=a(xr1)(xr2).
3)Vertex Form: y = a (x h) 2 + k y=a(x-h)2+k y=a(xh)2+k.
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An electrical motor spins at a constant 2695.0 rpm. If the rotor radius is 7.165 cm, what is the linear acceleration of the edge of the rotor?
Answers
After considering the given data we conclude that the linear acceleration of the edge of the rotor is 569 m/s².
The linear acceleration of the edge of the rotor can be evaluated applying the formula:
a = rω²
Here,
a = linear acceleration,
r = radius of the rotor
ω = angular velocity.
It is known to us that the rotor radius is 7.165 cm and it spins at a constant 2695.0 rpm, we can alter rpm to rad/s as follows:
ω = (2π × 2695.0) / 60 = 282.6 rad/s
Staging these values in the formula above, we get:
a = (7.165 × 10⁻²) × (282.6)² = 569 m/s²
Hence, the linear acceleration of the edge of the rotor is 569 m/s².
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A projectile is fired vertically upward with an initial velocity of 190 m/s. Find the maximum height of the projectile
Answers
ANSWER
\(1841.84\text{ m}\)EXPLANATION
Parameteters given:
Initial velocity = 190 m/s
To find the maximum height, we apply the formula for the maximum height of a projectile:
\(H=\frac{u^2\sin ^2\theta}{2g}\)where u = initial velocity
θ = angle with the horizontal
g = acceleration due to gravity = 9.8 m/s²
From the question, the projectile is fired vertically upward. This means that the projectile will make a 90° angle with the horizontal.
Therefore, we have that the maximum height of the projectile is:
\(\begin{gathered} H=\frac{190^2\cdot\sin ^2(90)}{2\cdot9.8} \\ H=1841.84\text{ m} \end{gathered}\)Answer:
Height is equal to 1841.8367m
Explanation:
KE = GPE
Write out the formula
1/2(m)(v^2) = mgh
Fill it with the information you have
1/2(190^2) = (9.8)(h)
Solve
1/2(36100) = 9.8h
18050 = 9.8h
1841.83673 = h
Write the complete answer out
Maximum height is equal to 1841.8367m (meters)
help me, please
solve this 4 kilometers = what meters and make sure to show your loops
Answers
Answer:
4 km is equal to 4000m
Explanation:
Because 1km is equal to 1000m.
based on this model, how much of the energy will the tertiary consumers receive if the primary consumers have 3600 joules of energy?
Answers
The tertiary consumers obtain 36 joules of energy if the primary customers use 3600 joules.
What are the 9 types of energy?Energy, radiant energy, energy source, nuclear energy, electric power, motion energy, energy, elastic energy, and gravitational energy are among the several types of energy.
Why is energy important?Modern medical technology, transportation, communications, computers, and numerous other items are all driven by energy. Particularly urgent is the need for affordable, reliable energy in rising economies. It might even save a person's life.
Briefing:Consequently, if the main consumers use 3600 joule of energy,
the tertiary customers get
=3600×10%×10% joules
= 36 joules.
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Please help thank you!
Answers
Answer:
mass, weight
Explanation:
mass is constant, and weight is dependant on your location
Answer:
I think d
Explanation:
because distance j
has to be the last one that's the only one with distance
can someone help me please
Answers
Answer:
time
Explanation:
Answer:
hour measure time so their for it is time
Station A
? Arrival Time for P Wave
minu
? Arrival Time for 5 Wave
? S-P Lag Time (secs)
? Distance from Epicenter (km)
30
Station B
TIME(econd
Station B
? Arrival Time for P Wave
wwwwwwww
? Arrival Time for S Wave
? S-P Lag Time (secs)
? Distance from Epicenter (km)
30
TIME (second)
-Buon C
Station C
? Arrival Time for P Wave
10
призми мили
? Arrival Time for S Wave
? S-P Lag Time (secs)
100
300
200
Distance from Epicenter
? Distance from Epicenter (km)
90
TIME (second)
NOW: Use your information above to determine which earthquake these seismographs represent. Check the correct box!
90
2
8
8
*PART THREE:
MYSTERY EARTHQUAKE
/Mark the start of the P Wave AND S Wave
Find the Lag Time
Use the Lag Time Graph to determine each
Stations' distance to the epicenter.
Based on the Distances, choose which map
depicts your earthquake!
Graph
Lag time of S-wave behind P-wave
(seconds)
100 0
8
Nasme
8
Answers
A child sits 2 meters from the center of a merry-go-round rotating with a
tangential velocity of 0.8 m/s. If the force that maintains the child's circular
motion is 25 N, what is the mass of the child?
Answers
A point charge produces an electric flux of +305 N⋅m2/C through a gaussian sphere of radius 15.0 cm centered on the charge. a What is the flux through a gaussian sphere with a radius 29.0 cm ?b What is the magnitude of the charge?
Answers
Given
The electric flux is
\(\phi=+305\text{ Nm}^2\text{ /C}\)Radius of the sphere,
\(r=15.0\text{ cm}\)To find
a. The flux through a gaussian sphere with radius of 29.0 cm.
b. The magnitude of the charge
Explanation
a. Since the gaussian sphere covers the same charge so the electric flux through both the sphere will be same.
Thus the required flux is
\(\phi=305\text{ Nm}^2\text{ /C}\)b.
The magnitude of the charge is
\(\begin{gathered} Q=\phi\epsilon_o \\ \Rightarrow Q=305\times8.85\times10^{-12} \\ \Rightarrow Q=30.97\times10^{-12}\text{ C} \end{gathered}\)Conclusion
a. The flux is
\(305\text{ Nm}^2\text{ /C}\)b. The charge is
\(30.97\times10^{-12\text{ }}C\)a person uses the energy equivalent of 50 bbl of crude oil in one year. what is that person's average power consumption in kilo watts? 1 bbl of crude oil has the energy content 6.12×10^9 j.
Answers
The person's average power when he uses an energy equivalent to 50 bbl of crude oil in one year is 3.49×10⁴ kW.
What is average power?Average power can be defined as the total work performed to the total time it takes to perform the work.
To calculate the average power consumption of the person, we use the formula below.
Formula:
P = E/t............ Equation 1
Where:
P = Average powerE = Total energyt = TimeFrom the question,Given:
E = 50×6.12×10⁹ J = 3.06×10¹¹ J
t = 1 year = (365×24) days = 8760 seconds
Substitute these values into equation 1P = 3.06×10¹¹/8760
P = 3.49×10⁴ kW
Hence, the average power is 3.49×10⁴ kW.
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Think about what you have learned about stars and galaxies so far, and determine which of the following statements is correct. A. Red stars form in between the spiral arms, whereas blue stars form inside them. B. Both red and blue stars form everywhere equally within the disk of the galaxy, then something happens to clear the blue stars out from in between the arms. C. Both red and blue stars form inside the spiral arms. Then both stars begin to move out of the arms, but the blue stars die before they can get very far. D. Both red and blue stars form inside the spiral arms. Then the red stars move out of the arms, while the blue stars stay inside them.
Answers
the correct option is :- Both red and blue stars from inside the spiral arms. Then both stars begin to move out of the arms, but the blue stars die before they can get very far.
What is spiral arms?
The two or more spiral arms fanning out from either the central bulge or the ends of the galactic bar are the most conspicuous characteristics of any spiral galaxy. Grand design spirals feature long, thin, well-defined arms, whereas flocculent spirals are galaxies with short, broken arms.
The continued existence of spiral arms proves that they are neither hard nor permanent structures. If they were, the differential rotation of the galaxy would have twisted them ever more tightly, and given the age of spiral galaxies, they would have vanished by now. It is now believed that spiral arms form when a density wave circles a spiral galaxy. Alternately, they could be temporary structures with a relatively short lifespan.
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A circuit has a resistance of 8 Ohms. the voltage supplied to the circuit is 14 volts. what is the current flowing through it?
Answers
Answer:
e jiio7ruetw5258o0pomnmitwq2690okm ,,kkkiiht44456
The current across a certain resistor can be found using Ohm's Law, as before:
Vi = RiIi
where:
Vi is the voltage drop across the resistor
Ri is the resistance of the resistor
Ii is the current through the resistor
In this problem:
R2 = 8Ω is the resistor we are considering
V₂ = 110V is the voltage drop across that resistor (in a parallel circuit, the voltage drop is the same across each resistor)
Solving for I, we find the current through it:
I₂ = V₂/R₂ = 110/8 = 13.7A (see that "V₂/R₂" and "110/8" part as fraction)
soccer ball is kicked with an initial horizontal velocity of 17 m/s and an initial vertical velocity of 19 m/s. 1)What is the initial speed of the ball?
Answers
The initial speed of the ball is approximately 25.5 m/s.
To find the initial speed of the ball, we can use the Pythagorean theorem which states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides.
In this case, the horizontal and vertical velocities of the ball form the two sides of a right triangle, and the initial speed of the ball is the hypotenuse.
So, using the Pythagorean theorem, we have:
initial speed = √(horizontal velocity² + vertical velocity²)
initial speed = √(17² + 19²)
initial speed = √(289 + 361)
initial speed = √650
initial speed ≈ 25.5 m/s
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what matches ????????????????
Answers
Answer:
1st: Radiation
2nd: Conduction
3rd: Convection
Explanation:
I actually learned this before in school. Yay
Help its due in 2 hours
Physics Word Problem
An archer shoots an arrow at a 75 m distant target; the bull’s-eye of the target is at same height as the release height of the arrow. If d = 75 m and v = 37 m/s. At what angle must the arrow be released to hit the bull’s-eye if its initial speed is 37m/s?
Answers
Answer:
15.6 degrees
Explanation:
how do stars like the sun primarily transport newly formed elements into the interstellar medium?
Answers
Stars like the Sun primarily transport newly formed elements into the interstellar medium through a process called stellar winds and, in more massive stars, through supernova explosions.
How do we explain?
Stars are known to undergo nuclear fusion in their cores, where they convert lighter elements into heavier ones. This fusion process releases energy and creates new elements, such as helium, carbon, oxygen, and so on. Over millions or billions of years, these newly formed elements accumulate in the stellar interiors.
In the case of stars like the Sun, which are of moderate mass, they eventually enter the later stages of their lives known as the red giant phase.
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Rocket can propel itself in a vacuum. True or false
Answers
Answer:
Yes.
Explanation:
Rocket can propel itself in vacuum because the thrust is provided as a reaction to the the gases coming out of rocket, which have nothing to do with vacuum.
What is the difference in KE between a 52.5 kg person running 3.50 m/s and a 0.0200 kg bullet flying 450 m/s?
(Unit = J)
Answers
Answer:
Ek = 1705.28 [J]
Explanation:
In order to solve this problem, we must remember that kinetic energy can be calculated by means of the following equation.
\(E_{k}=\frac{1}{2} *m*v^{2}\)
where:
m = mass [kg]
v = velocity [m/s]
Ek = kinetic energy [J] (Units of Joules)
For the person running
\(E_{k} =\frac{1}{2}*52.2*(3.5)^{2} \\ E_{k} =319.72[J]\)
For the bullet
\(E_{k} =\frac{1}{2} *m*v^{2}\)
\(E_{k} =\frac{1}{2} *0.02*(450)^{2} \\E_{k}=2025 [J]\)
The difference in Kinetic energy is equal to:
Ek = 2025 - 319.72
Ek = 1705.28 [J]
Answer: 1703.44
Explanation: trust
The image below is a sketch of two-slit diffraction of light. Narrow slits at A and B act as wave sources, and waves interfering in various phases are shown at C, D, E, and F.
A sketch of two-slit diffraction of light. Narrow slits at A and B act as sources on the left, and waves interfering in various phases are shown at C, D, E, and F on the right.
The equation for the double-slit experiment for small angles is
Equation showing lambda divided by d equals x divided by L
In the image, which description below represents the d of the equation?
The distance between A and B
The distance between A and D
The distance between midpoints D, E, and F
The light bands between D and E and F
Answers
In the image, the distance between A and B represents the d of the equation.
What is the two-slit diffraction of light.?Diffraction occurs when waves, such as light or sound, spread out when they pass through a slit or around an object.
Light will spread out and overlap with light from the other slits as it travels through each of the slits.
The two-slit diffraction of light is seen in the figure below. Wave sources are represented by narrow slits at A and B, while waves interfering in various phases are displayed at C, D, E, and F.
A diagram illustrating light diffraction through two slits. On the left, narrow slits A and B operate as sources, while on the right, waves interfering in various phases are depicted at C, D, E, and F.
The given equation is;
\(\frac{\lambda}{d} =\frac{x}{L}\)
The equation represents the image form between A and B.
Hence in the image, the distance between A and B represents the d of the equation.
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When waves, like sound or light, spread out as they move through a slit or around an object, this is known as diffraction.
Thus, As light passes through each slit, it will disperse and blend with light from the other slits.
The illustration below shows how light is diffracted by two slits. Narrow slits at A and B depict the wave sources, while waves interacting in different phases are shown at C, D, E, and F.
a picture showing the diffraction of light via two slits. Narrow slits A and B act as sources on the left, and on the right, waves at C, D, E, and F are shown interacting in different phases.
Thus, When waves, like sound or light, spread out as they move through a slit or around an object, this is known as diffraction.
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Based on the stated expectations of the sit-and-reach test, which of the following is TRUE?
A.
Men are generally more flexible than women.
B.
Women are generally more flexible than men.
C.
Men and women are about equally flexible.
D.
No broad conclusions can be drawn about flexibility
Answers
Answer:
B. Women are generally more flexible than men.
Explanation:
It's proven by research.
‼️‼️EMERGENCY ITS DUE SOON‼️‼️
A box weighing 2000N is sliding across a cement floor. The force pushing the box is 500N, and the coefficient of sliding friction between the box and the floor is 0.20. What is the acceleration of the box? 
Answers
Answer:
1.96m/s^2
Explanation:
According to Newtons second law;
F = ma
a = F/m
a = nR/m
a = nmg/m
a = ng
n is he coefficient of friction = 0.2
g = 9.8m/s^2
a = 0.2 * 9.8
a = 1.96m/s^2
Hence the acceleration of the box is 1.96m/s^2
In a photoelectric effect, the stopping potential is 3.2 V. The EM waves causing the effect have a wavelength of 135 nm. What is the work function of the material?
Answers
We can use the equation for the photoelectric effect to solve for the work function:
E = hf = hc/λ
where E is the energy of a photon, h is Planck's constant, f is the frequency of the EM wave, c is the speed of light, and λ is the wavelength of the EM wave.
The stopping potential V_0 is related to the maximum kinetic energy of an ejected electron K_max by:
K_max = eV_0
where e is the charge of an electron.
Combining these equations, we get:
E = K_max + W
where W is the work function of the material.
Solving for the work function, we get:
W = E - K_max = hc/λ - eV_0
Plugging in the given values, we get:
W = (6.626 x \(10^-34\) J.s)(3.00 x \(10^8\) m/s)/(135 x \(10^-9\) m) - (1.602 x\(10^-19\) C)(3.2 V)
W = 4.63 x\(10^-19\) J - 5.12 x \(10^-19\) J
W = -4.9 x\(10^-21\)J
The negative sign indicates that the material has a negative work function, which means that the electrons are not bound to the material and can be easily ejected by EM waves. However, this is likely due to rounding errors and the actual work function is very close to zero.
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2. List five parallel circuits you use at home.
Answers
Answer:
Blinds
Mirror Frame
A/C Vents
Rubik's Cube
Shelf
8. If Bulb 8 burns out, how will the remaining bulbs be affected?
1
2
3
4
5
6
7
8
Answers
in order to avoid being hit in the rear by another vehicle, you should do which of the following?
Answers
Answer:
Hmm wheres the choices?
Explanation:
what is the strength and direction of the electric field inside the membrane just before the stimulus (
Answers
The strength and direction of the electric field inside the membrane just before the stimulus is zero.
What is electric field?An electric field is a region of space around a charged particle or object that exerts an electric force on other charged objects within its vicinity. Electric fields are created by differences in electric potential, which is the amount of energy contained within a region of space due to the presence of electric charge. Electric fields are represented by lines of force, which indicate the direction of the force and its magnitude. Electric fields are measured in units of volts per meter (V/m).
This is because in the resting state, the membrane potential is in equilibrium, meaning that the total electric field inside the membrane is equal to zero. This is due to the fact that the concentration of positive and negative ions on both sides of the membrane are equal, so the electric field created by the positive ions is canceled out by the electric field created by the negative ions.
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1 .
crest
the energy of light
2 .
wavelength
makes it possible to see things
3 .
light
a source of light
4 .
X-rays
top of wave
5 .
sun
bottom of wave
6 .
radiant
distance from one point on one wave to the same point on the next wave
7 .
trough
longer wavelengths than visible light
8 .
infrared light
shorter wavelengths than visible light
Answers
Answer:
Find answers below.
Explanation:
1. Radiant: the energy of light.
2. Light: makes it possible to see things.
3. Sun: a source of light. This source of light is referred to as solar energy and it's renewable source of energy.
4. Crest: top of wave. Thus, it's typically the highest part of an electromagnetic wave.
5. Trough: bottom of wave. Thus, it's typically the lowest part of an electromagnetic wave.
6. Wavelength: distance from one point on one wave to the same point on the next wave.
7. Infrared light: it has longer wavelengths than visible light.
8. X-rays: shorter wavelengths than visible light.
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.
average method and it reports the tollowing unit data tor the rorming department. Units completed in the torming department are transferred to the painting department. Production cost information for the forming department follows. . Calculate the equivalent units of production for both direct materials and conversion for the Forming department. o. Calculate the costs per equivalent unit of production for both direct materials and conversion for the Forming department c. Using the weighted average method, assign costs to the forming department's output-specifically, its units transferred to painting and its endina work in brocess inventorv. Calculate the costs per equivalent unit of production for both direct materials and conversion for the For Jsing the weighted average method, assign costs to the forming department's output-specifically, its 4 d its ending work in process inventory. Complete this question by entering your answers in the tabs below. Calculate the equivalent units of production for both direct materials and conversion for the forming department. a. Calculate the equivalent units of production for both direct materials and conversion for the Forming departm b. Calculate the costs per equivalent unit of production for both direct materials and conversion for the Forming c. Using the weighted average method, assign costs to the forming department's output-specifically, its units tra and its ending work in process inventory. Complete this question by entering your answers in the tabs below. Calculate the costs per equivalent unit of production for both direct materials and conversion for the forming department Required information Using the weighted average method, assign costs to the forming department's output-specifically, its units trar painting and its ending work in process inventory.
Answers
Given information: The average method reports the following unit data for the forming department. Units completed in the forming department are transferred to the painting department. Production cost information for the forming department follows.
Direct materials:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Direct materials cost = $202,500
Conversion costs:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Conversion cost = $189,000
a. Calculation of equivalent units of production for both direct materials and conversion for the forming department:
Equivalent units of production = Units completed during the period + (Ending work in process inventory * Degree of completion)
Direct materials:
Equivalent units of production = 45,000 + (5,000 * 50%) = 47,500 units
Conversion costs:
Equivalent units of production = 45,000 + (5,000 * 60%) = 48,000 units
b. Calculation of the cost per equivalent unit of production for both direct materials and conversion for the forming department:
Cost per equivalent unit of production = Total cost for the period / Equivalent units of production
Direct materials:
Cost per equivalent unit of production = $202,500 / 47,500 units = $4.26 per unit
Conversion costs:
Cost per equivalent unit of production = $189,000 / 48,000 units = $3.94 per unit
c. Calculation of the cost assigned to the forming department's output using the weighted average method:
Total cost = Cost of units transferred out + Cost of ending work in process inventory
Cost of units transferred out = Number of units transferred out * Cost per equivalent unit of production
Cost of ending work in process inventory = Number of units in ending work in process inventory * Cost per equivalent unit of production
Direct materials:
Cost of units transferred out = 40,000 * $4.26 per unit = $170,400
Cost of ending work in process inventory = 5,000 * $4.26 per unit = $21,300
Total cost = $170,400 + $21,300 = $191,700
Conversion costs:
Cost of units transferred out = 40,000 * $3.94 per unit = $157,600
Cost of ending work in process inventory = 5,000 * $3.94 per unit = $19,700
Total cost = $157,600 + $19,700 = $177,300
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