Heat is transferred from the cream solution to the ice leading to the ice melting and colder.
What happens to heat energy when making ice cream?Heat energy goes from the regions with more heat energy to other regions with less heat energy. The milk mixture has more heat energy as compared to the salt and ice. Heat energy goes from the milk mixture to the ice and salt. The milk mixture releases heat energy, which resulted in cooling and freezing which eventually becomes the ice cream solid.
Ice absorbs energy to melt. Heat is transferred from the cream solution to the ice, making the ice melt and the cream colder. Eventually, as the ice absorbs more energy from the cream mixture it will start freezing.
So we can conclude that Heat is transferred from the cream solution to the ice making the ice melt and cold the cream.
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Three objects having the same mass begin at the same height, and all move down the same vertical distance h. One falls straight down, one slides down a frictionless inclined plane, and one swings on the end of of a string.
The work completed should be comparable in all three circumstances.
The body's work is equal to mgH. (Gravitational potential energy).
Gravity and the normal force are both at work on a body descending a frictionless inclined plane. It won't make a difference to the gravitational potential energy.
The purpose of distance calculationWe can find out an object's actual size by knowing how far away it is. The area an object occupies in space above us can be measured. Once we know how far away it is, we can calculate its true size.
What is a distance?Length is an item's general motion in a purposeless fashion. Distance can be thought of as the amount of space a thing has traveled since it first appeared.
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John throws a rock down with speed 14 m/s from the top of a 30-m tower. If g = 9. 8 m/s2 and air resistance is negligible, what is the rock's speed just as it hits the ground?.
We can use kinematic equations to solve this kind of problems. Here when the rock is thrown with an initial velocity of 14 m/s from a 30m high tower, the velocity with which the rock hits the ground is 28 m/s.
We can use the distance equation in kinematics to find the velocity when it reaches the ground.
v²-u² = 2aS
v is the final velocity
u is the initial velocity = 14m/s
a is the acceleration, here a= g = 9.8 m/s²
S is the distance travelled = 30 m
v² = u² + 2aS
v² = 14² + 2× 9.8× 30
v² = 784
v = √784 = 28 m/s
So the final velocity is 28 m/s.
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Light and Sound Waves Quick Check
How are mechanical waves defined? (1 point)
1. They are waves that require some form of matter as a medium.
2. They are waves that involve matter, rather than energy, moving from one place to another.
3. They are waves that are generated by humans, rather than naturally.
4. They are waves that are able to pass through a vacuum.
Mechanical waves can be defined as one whereby 1. They are waves that require some form of matter as a medium.
What is mechanical wave?An oscillation of matter known as a mechanical wave is what is responsible for the transmission of energy via a medium. The transmission medium sets a restriction on how far a wave can travel. In this instance, there is almost little translational motion and the oscillating material rotates around a fixed point.
A mechanical wave is one whose energy cannot be transmitted via a vacuum. To transfer their energy from one place to another, mechanical waves need a medium. A mechanical wave is something like a sound wave.
Therefore, option 1 is correct.
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Answer:
1.
Explanation:
i did test
Which of the following was part of the Challenger’s goals for their mission into space?
to measure distances between satellites orbiting above Earth
to film a documentary segment
to conduct routine repairs on the International Space Station
to initiate contact back to mission control via new communication devices
Answer:
"To film a documentary segment"
Explanation:
For me its option D, but as the answers are listed here it would be option B. I just took the quiz and got this question right. Have a great day! C :
the pressure indicated by the question mark is the __________.
The pressure indicated by the question mark is systolic pressure. Option 1 is correct.
Systolic pressure is the highest pressure exerted on the walls of the arteries when the heart contracts and pumps blood out into the circulatory system. During each heartbeat, the heart first contracts and pushes blood out of the left ventricle into the aorta, causing an increase in pressure within the arteries.
For instance, in a blood pressure reading of 120/80 mmHg, the systolic pressure is 120 mmHg. Systolic pressure can vary based on factors such as age, physical activity, stress, and overall health. High systolic pressure over time can damage blood vessels and increase the risk of heart disease, stroke, and other health problems.
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--The complete question is, The pressure indicated by the question mark is the __________.
a. systolic pressure
b. mean arterial pressure
c. pulse pressure
d. diastolic pressure--
During a race, the 48 kg runner accelerates from 5.1 m/s to 8.7 m/s to take the lead. What is the runner's change
in momentum?
Answer: the runner's change in momentum is 172.8 kg·m/s.
Explanation:
To find the change in momentum of the runner, we can use the equation:
change in momentum = mass x change in velocity
The mass of the runner is given as 48 kg, and the change in velocity can be calculated as:
change in velocity = final velocity - initial velocity
change in velocity = 8.7 m/s - 5.1 m/s
change in velocity = 3.6 m/s
Therefore, the change in momentum of the runner is:
change in momentum = mass x change in velocity
change in momentum = 48 kg x 3.6 m/s
change in momentum = 172.8 kg·m/s
So the runner's change in momentum is 172.8 kg·m/s.
a mass is hanging from spring and vibrating. it is replaced by a mass which is twice as large and its amplitude is increased by a factor of two. what happens to the period of the pendulum?
The period of the pendulum will increase by a factor of √2 when the mass is replaced by a mass that is twice as large, but the amplitude is increased by a factor of 2.
The period of a simple harmonic oscillator, such as a mass hanging from a spring, is given by:
T = 2π√(m/k)
where T is the period, m is the mass, and k is the spring constant.
If we replace the original mass with a new mass that is twice as large, the period will change as follows:
T' = 2π√(2m/k)
where T' is the new period.
If we also increase the amplitude of the motion by a factor of 2, this will not affect the period of the pendulum. The period depends only on the mass and the spring constant, and is independent of the amplitude of the motion.
Therefore, the new period of the pendulum will be:
T' = 2π√(2m/k)
which is equal to the original period multiplied by the square root of 2.
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what term is used to describe published studies that describe original experiments in science?
Since it focuses on measuring, analyzing, and testing hypotheses, primary literature descriptions of original study produced by the are occasionally referred to as empirical research.
What does scientific experimental evidence entail?Observations made under controlled circumstances as opposed to through other forms of empirical study constitute experimental evidence. Researchers can deduce causes for a behavior they are studying thanks to experimental energy .
Which two sorts of experimental investigations are there?True experiments and quasi-experimental designs are the two broad categories into which experimental research can be divided. Both designs call for the manipulation of the treatment; but, whereas real experiments also call for randomization, quasi-experiments do not.
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Electromagnetic radiation consists of particles called ______, each of which has a discrete amount, or quantum, of energy. However, since electromagnetic radiation also has wave properties, each particle is also characterized by a specific ___________ (m) and frequency (s⁻¹).a. Photons, Wavelengthb. Energy, Waves.c. Wave, Mass.d. Decreases, Less.
If you think of electromagnetic radiation as a flow of massless particles called photons,
What is the name of the electromagnetic radiation subatomic particles, each of which has a specific quantity of energy termed a?An electromagnetic wave makes up a photon, a small particle. They are both massless and chargeless. They can be compared to a tiny bag of light energy. A quantum, or discrete packet of gas or matter, is an example.
Are photons a component of electromagnetic waves?a spectrum of electromagnetic waves. A stream of photons, each carrying energy and flowing at the speed of light, can be compared to electromagnetic radiation, as was stated in the handy guide on the electromagnetic spectrum.
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How does the proportion of hydrogen and helium in the universe support the big bang theory?.
According to extensive spectroscopic studies, it became clear that the hydrogen: helium ratio is proven to be 3:1. Along with the scarcity of other elements gives clues that supports Big Bang.
Before big bang all the atoms and molecules were dissociated and ionized. because the temperature was very higher. After Big Bang happened, the temperature falls down rapidly, and all ions fused to form atoms and molecules. Since the process was much faster protons and neutrons collided to form deuterium, Collision between deuterium and protons and neutrons occurred resulting in tritium and helium. A small amount of lithium was also formed. Formation of heavier atoms have not occurred because the process was rapid.
Almost all the matter were formed during this small time. Because of the rapid process hydrogen formed more constituting the 74% and helium next constituted 23-24%. All other elements were gradually formed during stellar evolutions. But still now the constitution of nuclear matter remains the same.
So the unchanging ratio supports the Big Bang theory.
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the earliest known measurement of the circumference of the earth used is called___
The earliest known measurement of the circumference of the earth used is called ; Eratosthenes' Method.
What is the measurement ?The measurement is the process of determining the size, amount, or degree of something. Measurement can involve counting, weighing, or measuring physical characteristics such as length or volume. It can also involve observing or assessing behavior, or determining the amount or degree of something that cannot be physically measured, such as intelligence or happiness. Measurement is an important tool in many fields, including science, economics, engineering, and industry. Measurements are often used to compare different items or to track changes over time.
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The earliest known measurement of the circumference of the earth used is called ; Eratosthenes' Method.
What is the measurement ?The measurement is the process of determining the size, amount, or degree of something. Measurement can involve counting, weighing, or measuring physical characteristics such as length or volume.
It can also involve observing or assessing behavior, or determining the amount or degree of something that cannot be physically measured, such as intelligence or happiness.
Measurement is an important tool in many fields, including science, economics, engineering, and industry. Measurements are often used to compare different items or to track changes over time.
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early february is halfway between what two seasonal events. t/f
True.
Early February is halfway between the winter solstice and the spring equinox in the Northern Hemisphere.
What is Winter Solstice & Spring Equinox?The winter solstice occurs around December 21st or 22nd and marks the shortest day and longest night of the year. The spring equinox occurs around March 20th or 21st and marks the start of spring, when the day and night are roughly equal in length. Halfway between these two events is approximately February 10th, marking the gradual shift from winter to spring.
The winter solstice marks the point when the sun is at its farthest point from the equator and the Northern Hemisphere is tilted away from the sun, causing the shortest day and longest night of the year. On the other hand, the spring equinox marks the point when the sun is directly over the equator and the day and night are approximately equal in length.
Halfway between the winter solstice and the spring equinox is a time when the days start to get noticeably longer and the sun rises higher in the sky, signaling the end of winter and the beginning of spring. This is a gradual transition and not a sudden change. In early February, the sun rises earlier and sets later, and the length of daylight continues to increase until the spring equinox.
In the Northern Hemisphere, early February is a time when the weather starts to warm up and the first signs of spring become visible, such as the emergence of buds on trees and the first crocus flowers in gardens. However, it is still winter and the weather can be cold and wintry.
In the Southern Hemisphere, early February is the height of summer, with warm temperatures and longer daylight hours. This is the opposite of the Northern Hemisphere, where it is the height of winter.
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4. Find someone in the class that has a wire hoop with a different number of loops in it. When you put your magnet near their hoop, does it rotate at the same rate, at a greater rate, or at a lower rate? Explain why you think this is relative to their number of loops.
When you put your magnet near a wire hoop with a different number of loops, the rate of rotation will depend on the number of loops in the wire hoop.
How does wire hoop experiment work?The greater the number of loops, the greater the induced current and the stronger the magnetic field. This results in a greater torque on the wire hoop and a faster rate of rotation. On the other hand, a wire hoop with a smaller number of loops will have a weaker induced current and magnetic field, resulting in a slower rate of rotation.
Therefore, the rate of rotation of the wire hoop will depend on the number of loops in the wire hoop, with more loops resulting in a greater rate of rotation and fewer loops resulting in a slower rate of rotation.
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What is spring-mass-damper system formula?
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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A 0. 50-m long solenoid consists of 800 turns of copper wire wound with a 5. 0 cm radius. When the current in the solenoid is 12 a, the magnetic field at a point 1. 0 cm from the central axis of the solenoid is.
The magnetic field at a point 1.0 cm from the central axis of the solenoid is 1.6 x 10^-3 T.
The magnetic field (B) inside a solenoid can be calculated using the formula:
B = μ_0 * n * I / L
where μ_0 is the vacuum permeability (4π x 10^-7 T m/A), n is the number of turns per unit length, I is the current in the solenoid, and L is the length of the solenoid.
For the given solenoid, the number of turns per unit length can be calculated as follows:
n = 800 turns / 0.5 m
n = 1600 turns/m
At a point 1.0 cm from the central axis of the solenoid, the magnetic field can be calculated as follows:
B = μ_0 * 1600 turns/m * 12 A / (0.05 m)
B = 1.6 x 10^-3 T.
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What is kinetic-molecular theory in solids?
Kinetic molecular theory states that gas particles are in constant motion and exhibit perfectly elastic collisions.
The assumption that matter is made up of microscopic particles that are always in motion is the foundation of the kinetic-molecular theory, a theory that describes the states of matter.
However, the theory is most simply understood when it is applied to gases, therefore this is where our in-depth study will start. The theory especially pertains to the ideal gas model of a gas. An ideal gas is a hypothetical gas whose behaviour exactly matches all of the kinetic-molecular theory's presumptions. Although they are not perfect in actuality, gases come extremely close to being perfect in most real-world situations.
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Find the magnitude of the electrostatic force experienced by the positive charge.
The magnitude of the electrostatic force experienced by the positive charge is equal to the magnitude of the Coulomb force, which is given by F = k*|q1|*|q2|/r², where k is the Coulomb constant, q1 and q2 are the charges
What is the Coulomb ?The Coulomb (symbol: C) is a unit of electric charge that is named after the French physicist Charles-Augustin de Coulomb. This unit is used to measure the magnitude of electric charge, electric potential, and electric field strength. It is equal to the charge of one electron, which is equal to 1.602 x 10-19 Coulombs of charge. The Coulomb is a fundamental unit in electrical engineering and physics and is used to calculate the force between two charged particles. It is also used to measure electrical capacitance and electric dipole moments.
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what is fl oz in l conversion?
Fluid ounces (fl oz) and liters (L) are units of volume, with the former being more commonly used in the United States and the latter being more commonly used in most other parts of the world.
To convert from fluid ounces to liters, you can use the following conversion factor:
1 fl oz = 0.0295735 L
Volume is the measure of space occupied by an object or substance. It is expressed in different units depending on the system of measurement used. In the International System of Units (SI), the standard unit of volume is cubic meters (m³). However, in practical situations, other units are commonly used.
In the metric system, liters (L) and milliliters (mL) are used as units of volume. A liter is equal to one cubic decimeter (1 dm³), while a milliliter is one-thousandth of a liter. In the US customary system, fluid ounces (fl oz), cups (c), pints (pt), quarts (qt), and gallons (gal) are used. One fluid ounce is equal to 29.5735 milliliters, while one gallon is equal to 3.78541 liters.
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A 0. 36-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 48 n/m. The block is initially displaced 5 cm from the equilibrium point and then released to set up a simple harmonic motion. A frictional force of 0. 3 n exists between the block and surface. What is the speed of the block when it passes through the equilibrium point after being released from the 5-cm displacement point?.
The block moves at a speed of 40 m/s2 when it reaches the equilibrium point after being freed from the 5-cm displacement point.
What time of year is spring?Indian culture considers the months of March and April to be the start of spring, with an average high temperature of about 32 °C. Ugadi, the springtime celebration of some Indians, is notably popular in the state of Karnataka.
What makes springs crucial to physics?Springs play a crucial role in many complex physical systems because they provide as straightforward models for them. As you continue studying physics, you will see SHM repeatedly as it describes how things that behave like springs behave. the spring constant being denoted by k.
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What planets are on the ecliptic plane?
The eight planets in our solar system, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, are on the ecliptic plane.
The ecliptic plane is defined as the imaginary plane in space that contains Earth's orbit around the sun. Since all of the planets in our solar system orbit the sun, they are also on this same plane. The planets' orbits are not perfect circles, but are rather slightly elliptical, meaning they can vary slightly from the ecliptic plane.
However, in general, the planets stay relatively close to the ecliptic plane as they orbit the sun. This is significant because it allows astronomers to make predictions and observations about the planets' movements and positions in the sky.
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A particle moves in uniform circular motion with a radius of 3cm. The net force radially acting on the object is 30N. If the mass of the object is 6kg, find;
The centripetal acceleration
The particles linear speed
The acceleration if the radius is doubled with changing the particles speed
Answer:
a = V^2 / r centripetal acceleration
a = F / m given F (radial) = 30 N
1) a = 30 N / 6 kg = 5 m/s^2 centripetal acceleration
2) V^2 = a r = 5 m/s^2 * .03 m = .15 m^2 / s^2
V = .39 m/s
3) I assume "with" should read "without" otherwise the question can't be answered
a = V^2 / (2 * r) if the radius is doubled then the acceleration is halved
Which motor performs more work in the same amount of time- a 10 kW motor or a 20 kW motor? How much more work can it do?
Answer:
20kw twice the work
Explanation:
why did newton conclude that gravity has to be mutual and universal?
Newton concluded that gravity had to be mutual and universal because of his laws of motion. According to these laws, every action must have an equal and opposite reaction.
So, when an object attracts another object, the second object must also attract the first. This attraction must exist between all objects in the universe, thus making gravity mutual and universal.
Sir Isaac Newton's laws of motion, which were published in 1687, describe the motion of all objects in the universe.
The first law states that an object will remain at rest or move in a straight line unless an external force acts on it. The second law states that an object will accelerate when an external force acts on it.
From this, Newton concluded that if one object attracted another, then the second object must also be attracted to the first.
Therefore, Newton concluded that gravity was a mutual and universal force that acted between all objects in the universe.
He reasoned that since this force was mutual and acted on all objects, it must be the same force that kept the planets in orbit around the Sun.
This idea of universal gravity was revolutionary and changed the way people thought about the universe.
By demonstrating that all objects in the universe were subject to the same force, Newton showed that the universe was interconnected in a way that had never been seen before.
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Please match each term with it’s correct definition
The terms are paired with their correct definitions as shown above.
Why is physics?Physics is the cornerstone of the other natural sciences (chemistry, geology, biology, astronomy) and is essential to understanding our modern technological society. At the heart of physics is a combination of experiment, observation and the analysis of phenomena using mathematical and computational toolsGiven is to match the terms with the correct definition.
We can write the pairs as -
{ 1 } → { b }
{ 2 } → { f }
{ 3 } → { a }
{ 4 } → { d }
{ 5 } → { e }
{ 1 } → { c }
Therefore, the terms are paired with their correct definitions as shown above.
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A feather and a coin dropped in a vacuum fall with the equal
a) Momentum
b) Acceleration
c) Kinetic energy
d) Forces
In a vacuum, a feather and a coin will fall with equal acceleration, but not with equal forces, momentum, or kinetic energy.
What is kinetic energy?The drag force created by the air causes the feather to descend more slowly than the coin when there is air present. Both objects will descend with the same acceleration owing to gravity if there is no air present since there will be no air resistance.
Because the acceleration caused by gravity is constant, all objects in free fall will experience the same acceleration, which is around 9.8 m/s2, regardless of their mass. This implies that in a vacuum, the feather and the coin will descend at the same pace.
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22. A dry climate causes weathering to take place ____.
A. At the same rate as when the climate is wet
B. More rapidly if it is cold
C. More rapidly than a wet climate
D. More slowly than wet climate
Weathering happens more gradually in a dry climate than in a wet one.
How does the weathering process depend on the climate?The amount of rainfall and the temperature can influence how quickly rocks weather. The pace of chemical weathering is accelerated by high temperatures and heavier rainfall. 2. Compared to comparable rocks living in cold, dry climates, rocks in tropical regions exposed to heavy rainfall and high temperatures weather far more quickly.
What impact do cold and dry have on weathering?The pace of weathering will be the slowest in a cold, dry climate. The rate of weathering will be fastest in an area with a warm, humid climate. A warmer environment will support a wider variety of vegetation, and biological weathering will occur more quickly.
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Following are the four fundamental forces. Rank these forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest.
Forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest is Electromagnetism, Weak nuclear force, Strong nuclear force, Gravity.
The four fundamental forces are:
Gravity
Weak nuclear force
Electromagnetism
Strong nuclear force
When considering the strength of these forces between two protons located within the nucleus of an atom, the ranking from weakest to strongest would be:
Electromagnetism
Weak nuclear force
Strong nuclear force
Gravity
The electromagnetic force is responsible for the attraction and repulsion of charged particles, such as protons, and is the force that holds the positively charged protons together in the nucleus of an atom.
The weak nuclear force is responsible for the decay of subatomic particles and is much weaker than the electromagnetic force.
The strong nuclear force is responsible for holding the nucleus of an atom together and is much stronger than the weak nuclear force.
Gravity is the weakest of the four fundamental forces and is responsible for the attraction between massive objects, such as planets and stars. Its strength is negligible at the scale of subatomic particles.
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Question- Following are the four fundamental forces. Rank these forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest.
Gravity; weak; electromagnetism; strong
What is a very long solid nonconducting cylinder of radius
A very long solid nonconducting cylinder of radius is a three dimensional object that is cylindrical in shape and has a very large length in comparison to its radius.
The cylinder is made of a nonconducting material which means that it does not conduct electricity. This type of cylinder can be used in a variety of applications such as insulating materials or structural support.. The radius of the cylinder refers to the distance from the center of the cylinder to its outer edge. The larger the radius: the greater the volume of the cylinder.
This means that a larger radius cylinder would be more useful in applications where a greater amount of material is required.
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A small turbo-prop commuter airplane, starting from rest on a lansing airport runway, accelerates for 19. 0 s before taking off. Its speed at takeoff is 50. 0 m/s. Calculate the acceleration of the plane, in g's, assuming it remains constant.
The acceleration of the plane, assuming it remains constant, is 0.268 g's.
We can start by using the kinematic equation:
v = u + at
where:
v = final velocity = 50.0 m/s
u = initial velocity = 0 m/s (starting from rest)
a = acceleration
t = time = 19.0 s
Rearranging the equation to solve for acceleration:
a = (v - u) / t
a = (50.0 m/s - 0 m/s) / 19.0 s
a = 2.63 m/s²
To express the acceleration in units of g's, we can divide by the acceleration due to gravity:
a(g) = a / g
a(g) = 2.63 m/s² / 9.81 m/s²
a(g) = 0.268 g
Therefore, the acceleration of the plane, assuming it remains constant, is 0.268 g's.
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two coherent sources of radio waves, a and b, are 5.00 meters apart. each source emits waves with wavelength 6.00 meters. consider points along the line connecting the two sources.
At points along the line connecting the two sources, the two sources of radio waves interfere with each other. This interference can result in constructive or destructive interference, depending on the relative phase of the waves at the point of interest.
If the two waves have the same phase, they will reinforce each other, resulting in constructive interference and a maximum in the total amplitude of the waves. If the two waves have a phase difference of 180 degrees, they will cancel each other out, resulting in destructive interference and a minimum in the total amplitude of the waves.
The phase difference between the two waves at a given point along the line connecting the two sources can be calculated using the difference in the path lengths from the two sources to the point. The path difference is given by:
d = (2n + 1) λ/2
where n is an integer, λ is the wavelength of the radio waves, and d is the path difference. For constructive interference, the path difference must be an integer multiple of λ, while for destructive interference, it must be an odd multiple of λ/2.
So, considering the two sources of radio waves a and b are 5.00 meters apart and each source emits waves with wavelength 6.00 meters, the path difference between the two waves at a given point along the line connecting the two sources can be calculated as d = 5.00 meters. Based on the equation above, this corresponds to a phase difference of approximately 150 degrees, resulting in destructive interference at that point.
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