Define and identify examples of volume defects.
Answers
Sure! Volume defects refer to irregularities or imperfections that occur within the volume of a material. These defects can be caused by a variety of factors, including impurities, uneven cooling or solidification, and mechanical stresses.
One common example of a volume defect is porosity, which occurs when small voids or pockets of gas become trapped within a material during its formation. Another example is shrinkage, which happens when a material undergoes uneven cooling or solidification, causing it to contract and create voids or cracks.
Other types of volume defects can include inclusions (foreign particles or materials that become trapped within a material), grain boundaries (irregularities in the alignment of crystals or grains within a material), and voids (empty spaces or gaps within a material).
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Related Questions
Where do scientists get their evidence?
-For Study Guide
Answers
Scientists get their evidence through scientific methods such as observation and performing experiments.
What is Experiment?This is referred to as a part of a scientific method and it is performed by scientists to test a hypothesis so as to know whether it will be accepted or refuted.
This helps scientists to gather information from the various results gotten and the use of our sense organs such as nose etc to observe the various happenings is also a method in which scientists get their evidence. They also use models to study how certain processes occur so as to get the accurate data.
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q2. is it possible for the particle undergoing tunneling to be found within the barrier, rather than on either side of it?
Answers
Yes, it is possible for a particle to be found within the barrier while undergoing tunneling.
This phenomenon is known as quantum tunneling. Quantum tunneling occurs when a particle tunnels through a barrier that is normally too high to be crossed by the particle's kinetic energy. This occurs due to the wave-like nature of particles, which allows them to go through barriers that are otherwise impenetrable.
The wave-like nature of particles allows them to penetrate the barrier, often with a probability greater than zero. This phenomenon is used in many applications in science and technology, such as in quantum computing, where quantum tunneling is used to tunnel qubits through the barrier of a logic gate.
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As shown in the figure below, a cow walks leftward 15\,\text m15m15, start text, m, end text to eat some flowers, then walks rightward 25\,\text m25m25, start text, m, end text to munch on some apples. The cow walks a total time of 510\,\text s510s510, start text, s, end text.
Answers
Answer:
0.0196m/s
Explanation:
Since we are not ask what to calculate but we can calculate the cow's velocity.
Velocity = change in displacement/time
Change in displacement of the cow is +25-15 = 10m
Time taken = 510s
Velocity of the cow = 10/510
Velocity of the cow = 0.0196m/s
Hence the velocity of the cow is 0.0196m/s
Answer:
Explanation:
velocity=0.020
speed=0.078
a psychologist studies if internet uses causes isolation
A) experimental
B) correlational
C) Descriptive
Answers
What happens to the density of an object if the mass increases, but the volume remains the same?
Answers
A measure of mass per unit of volume. It is how much material a certain volume contains. ... If the volume of the object stays the same but the mass of the object increases then its density becomes greater.
In order for an object to have a perfectly circular orbit, what one thing must occur?
An object must have the exact mass to orbit in a circle.
An object must have the exact speed to achieve the circular orbit.
An object must have enough speed to create escape velocity.
Answers
In order for an object to have a perfectly circular orbit, an object must have the exact speed to achieve the circular orbit.
What is a circular orbit?A circular orbit is a circular path which an object continuously follow in the course of its movement.
The earth and planets have a circular orbit around the sun.
The circular orbit is maintained by a balance between centripetal and centrifugal forces.
Therefore, in order for an object to have a perfectly circular orbit, an object must have the exact speed to achieve the circular orbit.
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Which changes of state occur between solids and gases? Check all that apply.
vaporization
deposition
freezing
melting
sublimation
Answers
Answer:
deposition, sublimation
Explanation:
The changes of state occur between solids and gases during deposition and sublimation. The second and fifth option are correct.
What is sublimation?The conversion of solid to gas and gas to solid directly, as in case of solid ice made of carbon di oxide.
The change of state means changing the phase of the matter with the change in temperature and pressure of the surrounding.
The vaporization change liquid to gas or solid to liquid and vice versa. Freezing is converting liquid to solid. Melting is converting from solid to liquid.
The rest phenomenon are deposition and sublimation in which phase change between solid and gas.
Thus, second and fifth option are correct.
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If the plate area, plate separation, and dielectric constant are all doubles for a parallel plate capacitor, what happens to the capacitance?
Answers
If the cross-section of the area of the plate, the distance between the plate, and the dielectric constant are all doubled for a parallel plate capacitor, the capacitance of the parallel plate capacitor is doubled.
C = \(\frac{K\epsilon A}{d}\)
where C refers to the capacitance
K is the dielectric contsant
d is the separation between two plates
A is the area of the plates
According to the question, the new capacitance comes out to be
C' = \(\frac{2K\epsilon (2A)}{2d}\) = \(\frac{2K\epsilon A}{d}\)
C' = 2C
Therefore, we can say the parallel plate capacitance is doubled with a doubling of plate area, plate separation, and dielectric constant.
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Which of the following provide electrical resistance in a simple circuit? *
a battery
a wall outlet
a voltage source
a light bulb
Answers
Answer:
A light bulb
Explanation:
Sorry of it wrong
A wildlife researcher is tracking a flock of geese. The geese fly 5.0 km due west, then turn toward the north by 50 ∘ and fly another 4.5 km .PART A .How far west are they of their initial position? dw=? PART B What is the magnitude of their displacement? d=?
Answers
Answer:
PART A:
The geese initially fly 5.0 km due west. This movement is entirely in the west direction, so the west component (dw) is equal to 5.0 km.
Therefore, the geese are 5.0 km west of their initial position.
PART B:
After flying 5.0 km due west, the geese turn toward the north by 50° and fly another 4.5 km.
To determine the displacement (d), we need to find the resultant of their west and north components.
West component: The initial movement of 5.0 km due west does not change after turning north. So the west component of displacement remains the same at 5.0 km.
North component: The geese fly 4.5 km in the north direction. Since they turn by 50° from west, we can use trigonometry to find the north component (dn).
dn = 4.5 km * sin(50°)
dn ≈ 3.454 km
The displacement (d) is the magnitude of the resultant of the west and north components. We can use the Pythagorean theorem to find the magnitude:
d = sqrt(dw^2 + dn^2)
d = sqrt((5.0 km)^2 + (3.454 km)^2)
d ≈ 6.076 km
Therefore, the geese are approximately 6.076 km away from their initial position, and their displacement is approximately 6.076 km.
The flock of geese is initially 5.0 km west of their starting position. Their displacement, considering both the westward and northward movements, is approximately 5.2 km.
In the given scenario, the geese first fly 5.0 km due west. This indicates a purely westward displacement. Therefore, the distance west of their initial position is 5.0 km.
Afterward, the geese turn toward the north by an angle of 50 degrees and continue flying for another 4.5 km. This northward displacement can be broken down into its vertical and horizontal components. The vertical component can be found by multiplying the distance flown (4.5 km) by the sine of the angle (50 degrees). The horizontal component can be found by multiplying the distance flown (4.5 km) by the cosine of the angle (50 degrees).
Calculating the vertical component: 4.5 km × sin(50°) ≈ 3.42 km
Calculating the horizontal component: 4.5 km × cos(50°) ≈ 2.90 km
To find the magnitude of the total displacement, we can use the Pythagorean theorem. The total displacement is the square root of the sum of the squares of the horizontal and vertical components.
Calculating the magnitude of displacement: √(5.0 km² + 2.90 km² + 3.42 km²) ≈ √39.97 km² ≈ 6.32 km
Therefore, the geese are approximately 5.0 km west of their initial position, and their displacement is approximately 6.32 km.
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what aspect of the gas planets has the biggest effect on their rings and satilites.
Answers
Answer:
Explanation:gravity
.
Answer:
Gravity
Explanation:
Gravuty aspect of the gas giants has the biggest effect on their rings and satellites.
Convert:
1) 2kg into gram
2) 5200m into km
3) 20cm into m
Answers
2) 5200 meters converted into kilometers is 5.2
3) 20 centimeters converted into meters is 0.2
A car slows down from 95m/s to 50m/s in 3 seconds. What is its acceleration?
Answers
Answer:
4.17
Explanation:
We started at 95 and went down to 50 in 3 seconds.
The change in volocity would be about -45 km
distance traveld maybe 60
And power around 83.9 kw
I might be wrong so im sorry if I am.
I have not done this in a while.
15 m/s
Explanation:
The formula for acceleration is
Final Velocity - Initial Velocity then divide by your time
Plug in your numbers
50-95= -45 divide by your time
-45/3= -15
But your acceleration can’t be negative so it would be
15m/s
What is the weight of an astronaut with a mass of 75 kg on the moon? The gravitational field strength on the moon is 1.6 Nkg-1.
Answers
Answer:
122.5
Hope it helps you actually I have same question
I have the answer but no process
\( \textbf{What do you mean by Refractive Index ?}\)
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\( \qquad \tiny{ \sf \: no \: \: classes \: \: today {}^{} . \: it \: feels \: so \: relaxing \: \sqrt{} }\)
Answers
Rarefaction is the reduction of an item's density, the opposite of compression.Rarefaction is the reduction of an item's density, the opposite of compression.
Answer:
The Refractive Index (RI) is defined as the ratio of the speed of light in a vacuum to its speed in the sample medium.
Formula:-
\(n = \displaystyle{ \frac{c}{v} }\)
Where,
c is the speed of light and v is the phase velocity of light.
Review and Reinforce
The Nervous System
COCORI
Understanding Main Ideas
Answer the following questions on a separate theet of paper.
1. What are three main functions of the nervous system? Give an
cuample of each
2. What are the three kinds of neurons? How do they work together to
produce a response to an environmental stimulus?
3. Explain how your brain and sentory organs get information from the
outside world.
4. What are the two main parts of the peripheral nervous system? What
are the two main parts of the central nervous system?
Building Vocabulary
Match each term in the left column with its definition in the right column by writing the
letter of the correct definition on the line beside the term.
5
central nervous system
a cels that carry information through your nervous
system
b. the message that a neuron carries
ca bundle of nerve fibers
6. relex
7.neurons
S.nerve impulse
9.peripheral nervous system
d. a system of nerves that branches out and connects it
to the rest of the body
e. a system that controls the functions of the body with
the brain serving as the control center
f the place where a neuron transfers an impulse to
another structure
g an automatic response that occurs rapidly without
conscious control
10.nerve
11
synapse
Answers
Particles q₁ = -1.21 µC,
q2 = -55.0 µC, and
93 = +148 μC are in a line.
Particles q₁ and q2 are
separated by 0.447 m and particles q2 and q3 are
separated by 0.447 m. What is the net force on
particle q3?
Remember:
Negative forces (-F) will point left
Positive forces (+F) will point right
Answers
The net force on q3 is -1.686 N, with the arrow pointing to the left.
We may compute the force exerted by q1 and q2 on q3 using Coulomb's law:
where k is Coulomb's constant, q1, q2, and q3 are particle charges, and r1 and r2 are the distances between q1 and q3, respectively.
When we substitute the provided values, we get:
The forces' negative sign implies that they point in the opposite direction as the axis's positive direction. As a result, F1 points to the left, whereas F2 points to the right.
The vector sum of F1 and F2 is the net force on q3:
Fnet = F1 + F2 = -0.056 N + (-1.686 N)
As a result, the net force on q3 is -1.686 N and the force is negative will point left.
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A periodic wave having a frequency of 18 hertz and a speed of 343 meters per second has a wavelength of ____ m. (**\.\*)
Answers
Answer:19.1m
Explanation:
What challenges do scientists face in studying the Sun?
Answers
Answer:
Explanation:
The sun sends out solar wind constantly - charged particles that can degrade visual sensors and the skin of spacecraft, and the occasional blast of a solar flare, which can send out clouds of charged ions that can disrupt communications and electronics on board probes and satellites.
Hope this Helps <3
PLEASE HELP, i really need the help because i dont understand
Answers
The y-component of the vector is 4.97 m.
What is a vector?A vector is a quantity that has both magnitude and direction.
To calculate the y-component of the vector in the diagram above, we use the formula below.
Formula:
Y = Hcos∅.......... Equation 1From the question,
Given:
H = 22.3 m∅ = 77.1°Substitute these values into equation 1
Y = 22.3(cos77.1)Y = 22.3×0.223Y = 4.97 m.Hence, the y-component of the vector is 4.97 m.
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Chet plans an experimental investigation to see how well a new fertilizer works on daisies. The fertilizer must be dissolved in water and delivered to the plants by spraying it onto the leaves and stems.
To set up his control group for the experiment, Chet should leave out what
Answers
Answer:
The answer is D or Fertilizer, sorry for the late answer
Explanation:
Answer:
D Fertilizer hope this helps ..
Explanation:
a simple pendulum makes 130 complete oscillations in 3.10 min at a location where g = 9.80 m/s2. (a) find the period of the pendulum. s (b) find the length of the pendulum. m
Answers
A simple pendulum makes 130 complete oscillations in 3.10 min at a location where g = 9.80 m/s²: (a) The period of the pendulum is approximately 1.43 seconds (s). (b) The length of the pendulum is approximately 0.80 meters (m).
(a) The period of a simple pendulum is the time taken for one complete oscillation. We can calculate the period (T) using the formula:
T = (time taken for oscillations) / (number of oscillations)
Given that the pendulum makes 130 complete oscillations in 3.10 minutes, we need to convert the time to seconds:
T = (3.10 min × 60 s/min) / 130
T ≈ 1.43 s
Therefore, the period of the pendulum is approximately 1.43 seconds.
(b) The length of a simple pendulum can be determined using the formula:
L = (g × T²) / (4π²)
Substituting the value of the period (T) calculated in part (a) and the acceleration due to gravity (g = 9.80 m/s²), we can find the length (L):
L = (9.80 m/s² × (1.43 s)²) / (4π²)
L ≈ 0.80 m
Thus, the length of the pendulum is approximately 0.80 meters.
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Read each scenario and then answer the question. Scenario A: 120 J of work is done in 6 s. Scenario B: 160 J of work is done in 8 s. Scenario C: 200 J of work is done in 10 s. Which scenario uses the most power?.
Answers
The power in every scenario is the same. Power is the measurement of the energy transfer over time.
What is power?Power is the measurement of the energy transfer over time. It can be calculated by the formula,
\(P = \dfrac Wt\)
Where,
\(P\)- power
\(W\) - work
\(t\) - time
In scenario A,
\(P = \dfrac {120 }6 = 20 \rm \ W\)
In scenario B,
\(P = \dfrac {160 }8 = 20 \rm \ W\)
In scenario B,
\(P = \dfrac {200 }{10} = 20 \rm \ W\)
Therefore, the power in every scenario is the same.
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Answer:
Read each scenario and then answer the question.
Scenario A: 120 J of work is done in 6 s.
Scenario B: 160 J of work is done in 8 s.
Scenario C: 200 J of work is done in 10 s.
PLEASE HELP ME!!!! In your own words, what does Newton's first law mean to you?
Answers
Answer:
His first law states that unless it is forced to change its state through external force, every object will remain stationary or move in a straight line at a constant speed. It is usually taken as the definition of inertia.
Explanation:
the motion of the book as you lift it from the table and place it on the shelf
Answers
Answer:
what are you trying to do for this question
Explanation:
Think about holding a glass of cold water. Your hand is warmer than the glass. Do the particles in your hand or those in the glass of cold water move faster? Why?
Answers
technically usually the warmer object/substances particles move master which causes friction among the particles plus the kinetic energy being converted to thermal energy, so i would say the hand.
Which of these would help farmers decrease their impact on the ogallala aquifer
Answers
Implementing sustainable irrigation practices, such as precision agriculture techniques, drip irrigation, and soil moisture sensors, can help farmers decrease their impact on the Ogallala Aquifer.
Implementing sustainable irrigation practices is crucial to reducing the impact on the Ogallala Aquifer. Precision agriculture techniques, such as variable rate irrigation, enable farmers to apply water precisely where and when it is needed, minimizing water waste. Drip irrigation systems deliver water directly to the plant roots, reducing evaporation and improving water efficiency. Soil moisture sensors provide real-time data on soil moisture levels, allowing farmers to irrigate only when necessary, preventing overwatering. By adopting these practices, farmers can optimize water usage, conserve the Ogallala Aquifer, and ensure its long-term sustainability.
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Which of the following is LEAST likely to be the result of a genetic mutation?
A
A horse with a particularly long neck
B
A man with a beard
С
An albino squirrel
D
A plant that produces fewer seeds than normal
Answers
Answer:
B. man with a beard
Explanation:
it is not a genetic mutation because it is completely natural and common unlike the other options.
: where are you likely to find a cooling plant located in the duckwork? A. single family home B. A large apartment C. large factory D. A medium sized offices
Answers
Answer:
Option C
Explanation:
In a large sized factory, it is essential to create cooling system based on duct work because it can then be able to regulate cooling of any section of the factory from one place. Also, ductwork cooling is preferred in large spaces such as big offices building, towers, factories etc.
Hence, option C is correct
how much heat is required to increase the temperature of 20 lb of water from 32°f to 212°f?
A. 20 lb x 0.5 x 180°f = 1,800 BTU
B. 212°f - 32°f = 180 BTU
C. (20 x 144) + (20 x 180) + (20 x 970) = 25,880 BTU
D. 20 lb x 180°f = 3,600 BTU
Answers
20 lb of water requires 1,800 BTU of heat to increase its temperature from 32°F to 212°F.
To find the amount of heat required to increase the temperature of water from one temperature to another, we use the formula:
Q = m x c x ΔT
Where Q is the heat required, m is the mass of water, c is the specific heat capacity of water, and ΔT is the temperature change.
In this case, the mass of water is 20 lb, the specific heat capacity of water is 0.5 BTU/lb/°F, and the temperature change is 212°F - 32°F = 180°F.
Plugging these values into the formula, we get:
Q = 20 lb x 0.5 BTU/lb/°F x 180°F = 1,800 BTU
Therefore, the amount of heat required to increase the temperature of 20 lb of water from 32°F to 212°F is 1,800 BTU.
The correct answer is A. 20 lb x 0.5 x 180°f = 1,800 BTU
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