The value of the magnetic field after a capacitor is fully charged will be zero. This is because once the capacitor is fully charged and the electric field is no longer changing, the magnetic field will disappear.
When a capacitor is fully charged, the value of the magnetic field will be zero. This is because the electric field stops changing once the capacitor is fully charged, which in turn means that the magnetic field associated with it will no longer exist.
This can be explained by the principle that magnetic fields are generated due to the changes in electric fields, which no longer exist in the case of a fully charged capacitor. Thus, it is important to note that the value of the magnetic field will be zero once the capacitor is fully charged.
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how is heat capacity ratio determined experimentally
Heat capacity ratio is determined experimentally by measuring the change in temperature of a gas in response to the addition or removal of heat.
The heat capacity ratio, also known as the adiabatic index, is defined as the ratio of the heat capacity at constant pressure to the heat capacity at constant volume.
To experimentally determine the heat capacity ratio, a sample of gas is subjected to changes in temperature while its pressure and volume are carefully monitored. The change in temperature can be caused by adding or removing heat, or by changing the pressure of the gas through a piston or other mechanism.
The heat capacities at constant pressure and constant volume can then be calculated from the data, and the heat capacity ratio can be determined as their ratio. This measurement can provide valuable information about the thermodynamic properties of gases and can be used to better understand their behavior in different conditions.
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please help!! i’ve been trying to do this for an hour and a bit and i still have no clue what to do and it’s too late to email my teacher asking for help..
We have from the question on the proportionality that;
a) 147 m
b) 11 s
What is direct proportionality?Direct proportionality is a mathematical relationship between two variables where a change in one variable is accompanied by a proportional change in the other variable. In other words, if the values of two variables are directly proportional, they change in such a way that the ratio of the two variables remains constant.
We know that we have to find the constant of the proportionality first as such we have that;
s α t
s = kt^2
k = s/t^2
k = 75/5^2
k = 3
a) s = 3 * (7)^2
= 147 m
b) t =(s/k)^1/2
t = (363/3)^1/2
t = 11 s
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:As the two foci of an ellipse are brought together, the shape of the ellipse becomes ________.
A) more like a line between the foci.
B) more like a circle around the foci.
C) more like a triangle drawn around the foci.
D) more like a sphere around the foci.
As the two foci of an ellipse are brought together, the shape of the ellipse becomes B) more like a circle around the foci.
What is the Foci of an Ellipse?The two reference points that aid in drawing the ellipse are its foci. The ellipse's foci are equidistant from the origin and located on its primary axis.
The locus of a point, whose sum of the distances from the two fixed points is a constant value, is represented by an ellipse.
Hence, as they come closer and closer, the shape of the ellipse becomes B) more like a circle around the foci.
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A 50,000kg comet is at rest in space. A nuclear explosion spilts the comet into two pieces. If the 35,000kg piece moves away +5m/s, what is the velocity of the second piece?
Answer:
-11.67 m/s.
Explanation:
The velocity of the second piece can be determined by the law of conservation of momentum, which states that the total momentum of a closed system remains constant.
Let's call the velocity of the second piece "v".
Before the explosion, the total momentum of the comet is 0 (since it is at rest). After the explosion, the total momentum of the two pieces is
(35,000 kg)(5 m/s) + (15,000 kg)(v).
Using the law of conservation of momentum, we can set these two momenta equal to each other and solve for v:
0 = (35,000 kg)(5 m/s) + (15,000 kg)(v)
0 = 175,000 kg m/s + 15,000 kg v
-175,000 kg m/s = 15,000 kg v
v = -11.67 m/s
So the velocity of the second piece is -11.67 m/s.
Three identical charges of 4.00 μC are placed at the positions (0.20 m, 0, 0), (0, 0.20 m, 0) and (0, 0, 0.20 m). What is the magnitude of the force on any one of the charges?
a.3.6 N
b.0.0 N
c.3.1 N
d.7.2 N
Option a. The three charges are placed at the vertices of an equilateral triangle, with each side length equal to 0.20 m. Since the charges are identical and the distances between them are equal.
The force on a point charge q due to another point charge Q is given by Coulomb's law:
[tex]F = k * (q * Q) / r^2[/tex]
where k is the Coulomb constant ([tex]8.99 * 10^9 N m^2 / C^2[/tex]), q and Q are the magnitudes of the charges, and r is the distance between the charges.
In this case,[tex]q = 4.00 * 10^-6 C[/tex] and [tex]Q = 4.00 * 10^-6 C[/tex], so the magnitude of the force between two charges is given by:
[tex]F = k * (q * Q) / r^2\\ \\ = (8.99 * 10^9 N m^2 / C^2) * (4.00 * 10^-6 C)^2 / (0.20 m)^2\\ \\ = 3.6 N[/tex]
Since there are three charges, each charge experiences three forces in different directions due to the other two charges. The net force on a charge is the vector sum of these three forces. If the charges are placed at the given positions, the net force on a charge will be zero, as the forces cancel each other out.
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Maddie is on the weightlifting team at her school. She must lift as much weight as possible from the ground to a straight up standing position. How much work will maddie do if she uses a force of 6 n to lift 150 kg of weight to a height of 1. 5 m?.
The work done by Maddie to lift the weight of 150kg to a height of about 1.5 meters by a force of 6N is 9 Joules.
What is Work done?Work is the energy which is transferred to or from an object through the application of force which is along the direction of the displacement. For a constant force aligned with the direction of motion, the work done by the object equals to the product of the force strength and the distance traveled by that object.
Work done = f × s
f = force applied,
s = distance or displacement of the object
W = 6 × 1.5
W = 9 Joules
Therefore, the work done by Maddie is 9 Joules.
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Which of these is the BEST example of plasticity?
A) a man who consistently drives his car too fast
B) a teenager who spends a summer in Chile and learns to speak Spanish
C) a woman who leaves her job to stay home with her newborn
D) a person who is in a coma
Plasticity is option B) a teenager who spends a summer in Chile and learns to speak Spanish. Plasticity refers to the ability of the brain to change and adapt in response to new experiences and information. It is a crucial aspect of human development and learning.
The teenager in this example is experiencing a change in their brain as they learn a new language. Through exposure to the language and practice, the brain is adapting and creates new connections to process and understand the Spanish language. This type of plastic change is known as neuroplasticity and is a prime example of the brain's ability to change in response to new experiences.
On the other hand, options A) a man who consistently drives his car too fast, C) a woman who leaves her job to stay home with her newborn, and D) a person who is in a coma do not show plasticity in the same way. While these changes may have an impact on the brain, they do not involve the same level of new learning and adaptation as the teenager who learns Spanish.
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each double bond and each ring represents one degree of
Each double bond and each ring represent: one degree of unsaturation.
What is degree of unsaturation?Degree of unsaturation is a measure to how many hydrogen atoms molecule is missing in order to be fully saturated. Compound that does not have maximum number of hydrogens per its structure is said to be unsaturated.
One degree of unsaturation is equivalent to 1 ring or 1 double bond (1 π bond) and two degrees of unsaturation is equivalent to 2 double bond, 1 ring and 1 double bond, 2 rings or 1 triple bond. General formula is CnH2n–2 and compounds containing double or triple bonds are often referred to collectively as unsaturated compounds.
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it takes 250.0 j to raise the temperature of a 50.0 g sample of a metal by 10.0°c. what is the specific heat capacity of this metal?
The specific heat capacity of this metal is 0.5J/g°C when it takes 250.0 j to raise the temperature of a 50.0 g sample of a metal by 10.0°C.
Given the mass of metal (m) = 50g
The temperature of metal is raised to (T) = 10.0°C.
The heat required to raise the temperature of metal (Q) = 250j
Let the specific heat of metal = c
We know that q = mcΔT where q is the heat absorbed , m is the mass, c is the specific heat heat and T is the temperature change.
Such that, c = q/mΔT
c = 250/50 x 10 = 0.5J/g°C
Hence, the required specific heat capacity of the metal is 0.5J/g°C
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what is the acceleration at time 11.25 s?
The acceleration at time 11.25 seconds cannot be determined without more information.
Acceleration is the rate of change of velocity, so it can be calculated by the rate of change of the velocity at 11.25 seconds. This would require knowing the velocity at 11.25 seconds and at least one other point in time.The rate at which velocity varies with respect to time is referred to as acceleration. Since acceleration has both a magnitude and a direction, it is a vector quantity. Additionally, it is the first derivative of velocity with respect to time or the second derivative of position with respect to time.
Acceleration formula is given as:
[tex]acceleration=\frac{(final velocity)-(initial velocity)}{time}\\\\acceleration=\frac{change in velocity}{time}[/tex]
Without further details, it is impossible to calculate the acceleration at time 11.25 seconds.
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how strong is the electric field between the plates of a 0.80 μf air-gap capacitor if they are 3.0 mm apart and each has a charge of 72 μc ?
The required value of electric field between the plates of the capacitor which contain a specified charge is calculated to be 30 × 10³ V/m.
The value of capacitance is given as,
C = 0.8 μ F = 0.8 × 10⁻⁶ F
The following is the value of the space between the plates:
d = 3 mm = 3 × 10⁻³ m
The value of the charge is:
Q = 72 μc = 72 × 10⁻⁶ c
The value of the potential difference is: Q = C V
Making V as subject,
V = Q/C = (72 × 10⁻⁶)/(0.8 × 10⁻⁶) = 90 V
Substitute all the values in the potential difference calculation, then simplify it to account for the electric field.
90 = E × 3 × 10⁻³
E = 90/(3 × 10⁻³) = 30 × 10³ V/m
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g a high tension power line develops a net charge per unit length of 5.3 x 10-7 c/m when in use. (model this as an infinite linear charge.) what is the magnitude of the electric field on the ground a distance of 12 m from the wire?
A high-tension power line develops a net charge per unit length of 5.3 x 10⁻⁷ C/m. The magnitude of the electric field on the ground at a distance of 12 m from the wire is 7.95×10² N/C.
Consider an infinitely long straight, uniformly charged wire. Let the linear charge density of this wire be λ. P is the point that is located at a perpendicular distance from the wire. The distance between point P and the wire is r. The electric field is due to infinite line charge, E=λ/2πε0r. The net charge per unit length,λ =5.3 x 10⁻⁷ C/m. The distance from the wire,r= 12m. The electric field due to infinite line charge, E=λ/2πε0r = 5.3×10⁻⁷×2×9×10⁹/ 12= 7.95 ×10² N/C.
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how to turn a temporary magnet thats made out of magnetic materials turn into a permanent magnet
A: heat the temporary magnet then put it in a magnetic field
B: heat it then make it cool down and put it in a magnetic field
C: put the magnet in a magnetic field for a long time
D: All of the ways work
Answer: B
Explanation:
If the magnetic field applied to a temporary magnet is too strong, then the temporary magnet may align its atom and convert into a permanent magnet.
At the gym, a woman lifts 40 kilograms of weights on the leg press machine. It takes her 0. 5 seconds to raise the weights a vertical distance of 0. 4 meters. How much power does the woman generate when lifting the weights?.
The power applied by the woman on 40 kg mass is 313.6 W
Mass lifted by the woman, m = 40 kg
Height of the mass h = 0.4 m
Time taken for lifting the mass, t = 0.5 s
Work done by the woman is given by: W = m.g.h
Work done = W = 40 x 9.8 x 0.4
Work done = 156.8 J
Now let's calculate the power delivered by the woman which is
P = W/t
P = 156.8/0.5 = 313.6 watts
Thus, the power applied by the woman is 313.6 W.
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What are some some examples of estimator variables (forensics)
Answer:
Estimator variables are those that cannot be controlled by the criminal justice system. They include simple factors like the lighting when the crime took place or the distance from which the witness saw the perpetrator.
Explanation:
you have watched one too many old cartoons and decide to drive around town with a giant spring that is 4 m long and attached to the front of your car. you decide to help a semi truck that is stuck and try to push them with your car. you take a running start, and when you contact the truck the spring in your car compresses 3 m. during which portion of the compression did you do the least work on the spring?
During the third-meter portion of compression least work was done on the spring.
Work is a measure of the energy transfer that occurs when an object is moved by an applied force. It is a scalar quantity with units of Joules (J) in the SI system.
Work can be calculated as the product of the force applied to an object and the distance over which the force is applied. This is described by the equation W = Fd, where W is the work done, F is the force applied, and d is the distance over which the force is applied.
The direction of the force applied is important in determining the work done. Work is only done when the force is applied in the direction of the displacement of the object. If the force is applied perpendicular to the displacement, no work is done.
Therefore, During the third-meter portion of compression least work was done on the spring.
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what is the magnetic flux through the loop when it is tilted at a 60 ∘∘ angle?
The tilt angle and magnetic field intensity affect the magnetic flux passing through the loop.
Given these variables, the magnetic flux can be calculated using a mathematical expression.
The number of magnetic field lines that travel through a specific surface is measured by magnetic flux. The magnetic field is tilted at an angle of 60 degrees with regard to the loop's plane in this situation, and the surface is a loop. The strength of the magnetic field and the tilt angle must be known in order to compute the magnetic flux. With this knowledge, it is possible to calculate the magnetic field line density on the loop, which is inversely proportional to the magnetic flux.
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EXERCISE 9 THE EVOLUTION OF BIPEDALISM: POSTURAL FEEDING Work in a small group or alone to complete this exercise In this lab, we considered several different explanations for the evolution of bipedalism. In this exercise, we will take a closer look at the postural feeding hypothesis. According to the postural feeding hypothesis, bipedalism evolved os on extension of existing upright feeding postures common among opes. If this hypothesis is correct, it would mean that bipedalism evolved initially to suit feeding from trees, rather than to s STEP 1 Review the data provided in the table below. (These data come from several different research studies, which were compiled by biological anthropologist Kevin D. Hunt. They provide a general sense of the pat- terns of posture and locomotion among living ape species.) Percentage of Posture That Is Suspensory Arm-Hanging Percentage of Posture That is Bipedal Standing Percentage of Movement that is Bipedal Walking Type of Primate Environment Papio anubis (baboon) Open forest/savanna 0.2 0.1 Hylobates syndactylus Siamang) Closed forest/dense tree cover 61.7 Closed forest/dense tree cover Pongo pygmaeus (orangutan) Pan paniscus (bonobo) Closed forest/dense tree cover Open forest/savanna Pan troglodytes (chimpanzee) STEP 2 Analyze the data and look for patterns. 1. In general, which primates engage in more suspensory arm-hanging the baboon or the apes? 2. Which two primates engage in the most suspensory arm-hanging? What environment do they live in? 3. Which primate engages in the most bipedal standing? What environment does it live in? 4. Which two primates engage in the most bipedal walking? What environment do they live in? STEP 3 Interpret the data, 5. Based on the patterns you identified above, do you think the ape lineage was more likely to become bipedal than the other primates? Why or why not? 6. Based on the patterns you identified above, is an open forest (or savanna) environment necessary for the evolution of bipedalism? Why or why not? 7. Do the data presented here support the postural feeding hypothesis? Why or why not?
Step 2 Answer: Apes, in general, engage in greater suspensory arm-hanging than baboons. The most tense arm-hanging is between Siamang and an orangutan.
They reside in tight woodland/closed forest. Bonobo maintains the most bipedal posture. It dwells in a savanna/open forest setting. The most bipedal walking is done by baboons and chimps. They dwell in a savanna/open forest setting. Step 3's answer is: 5. Based on the trends observed above, it is impossible to say if the ape lineage was more likely than the other primates to become bipedal. According to the statistics, orangutans and siamangs participate in the most suspensory arm-hanging, whereas bonobos and baboons engage in the most bipedal standing and walking. It is impossible to draw any conclusions based on the patterns.
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In a motor, what do the combined effect of electric currents and magnetic forces turn electrical energy into?.
Electrical energy is converted to mechanical work in a motor.
What happens when electricity is transferred in a motor?
The kinetic energy produced by the vehicle's motor is converted from the electric potential energy to the electric current. The rotation of a rotor in a motor generates kinetic energy, which is the energy of motion. The wheels can turn because of the energy the rotating rotor transfers to them.
Electrical energy is transformed into rotational kinetic energy, a type of mechanical energy, using an electric motor. Electric fans, pumps, and other devices employ electric motors. Electrical energy is transformed into kinetic energy by an electric motor, however some of the electrical energy is lost during this process to thermal energy.
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When does the sun orbit closes to sagittarius a*?
The sun takes 230 million years to complete a single revolution about Sagittarius A*.
What is a black hole? What is gravitational singularity?A black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape its event horizon.A gravitational singularity, spacetime singularity or simply singularity is a condition in which gravity is so intense that spacetime itself breaks down catastrophically.Given is that sun orbit closes to Sagittarius A*.
Everything in our 13.6 billion-year-old galaxy orbits Sagittarius A*, including our solar system, which is located 26000 light years away.It takes the solar system about 230 million years to complete a single revolution. The solar system's orbit isn't a smooth path, though.Therefore, the sun takes 230 million years to complete a single revolution about Sagittarius A*.
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Explore the program by placing red and blue figures on the rope to simulate a tug of war a. Which figure can pull with the most force? b. What is the exact measurement of force that each figure can pull the rope?
The force that each figure can pull is determined by various parameters, including the weight and strength of the figurines, the length and tension of the rope, and the location of each figure. Experiments or computations based on applicable physics concepts and equations would be required to ascertain the precise measurement of force.
What is force?A force is an effect in physics that may modify the velocity of an item. A force can cause a mass item to change its velocity, or accelerate. Intuitively, force may be characterized as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Here,
The force that each figure can pull is determined by various parameters, including the figurines' weight and strength, the length and tension of the rope, and the location of each figure. Experiments or computations employing appropriate physics concepts and equations would be required to ascertain the precise measurement of force.
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For the circuit shown in the following diagram. What is the value of(i) Current through 6Ω resistor?(ii) P.D. across 12Ω resistor ?
Part (i) Current through resistor of 6Ω: I = 0.45 V.
Part ii) P.D. across resistor of 12Ω: I = 0.27 A
Explain the term potential difference?The difference in charge carriers' energy between two places in a circuit is known as the potential difference. Voltage measured: Voltage is another name for potential difference (p.d.), which is expressed in volts (V).Part (i) Current through resistor of 6Ω
R = 6 + 3 = 9Ω
Voltage V = 4V
I = V/ R = 4/9
I = 0.45 V
Part ii) P.D. across resistor of 12Ω.
R = 12 + 3 = 15Ω
I = V/R = 4/15
I = 0.27 A
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Ariana is accelerating her car at a rate of 4. 6 m/s2 for 10 seconds. Her starting velocity was 0 m/s.
The final velocity of car is 46 m/s.
We know that from newton's equation of motion,
v = u+at
Where,
v = final speed
u = initial speed = 0
a = acceleration = 4.6 m/s^2
t = time= 10 sec
Putting these these values in above equation we get: v = 46 m/s.
The action of one body on another in the form of pull or push is called a force. Mutual interaction between two bodies, which produce a force on one body, also produces a force on another body. The force applied by the body the other is known as reaction and the force on the body under study is known as Action.
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On the taxi Check, the magnetic compass should
A. swing opposite to the direction of tirn when turning from north.
B. Exhibit the same number of degrees of dip as the latitude
C. Swing Freely and indicate known headings
The magnetic compass on the cab should swing freely and display known headings. Hence, the correct option is (C).
A magnetic compass on a taxi check (an aviation pre-flight inspection) should swing freely, meaning it should not be influenced by any metallic or magnetic objects, and indicate accurate headings. The compass should be checked to see that it is functioning properly and aligned with the aircraft's heading during the taxi check. The magnetic compass is an important navigation tool for pilots, and it is essential that it is functioning correctly before takeoff.
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Classify each measurement as a scaled or vector a 20 books on a shelf
a) Scalar quantity, b) Vector quantity, c) Vector quantity, d) Scalar quantity, e) Vector quantity, f) Scalar quantity, g) Scalar quantity, h) Scalar quantity.
What is the difference between scalar and vector quantity?A scalar quantity is a physical quantity with a single numerical value. Scalar quantities include mass, temperature, and velocity.
A vector quantity is a physical quantity that has a magnitude as well as a direction. Displacement, velocity, and acceleration are examples of vector quantities. Scalar quantities may be stated as a single numerical value, but vector quantities must be expressed as a magnitude and a direction.
In physics, vector quantities are frequently employed to describe physical qualities such as force, velocity, and acceleration. The parallelogram technique can be used to add and subtract vector values. Scalar quantities, on the other hand, cannot be added or subtracted in the same way. Scalar quantities are easily added and subtracted.
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what is the mathematical relationship between spring force and the stretch of a spring?
The mathematical relationship between spring force and the stretch of a spring is F = - k x, where k is spring constant and x is the extension of the spring.
A spring is a material that may be bent by an external force before resuming its original shape.
Many of us use springs on a daily basis, yet we frequently ignore their inertia by treating them like massless objects. A spring's ability to experience displacement when stretched, compression when compacted, and return to equilibrium when free is a very casual process. This fact demonstrates that a spring compresses or stretches a body by applying an equal and opposite force.
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2. according to grove & gray (2019), what are the potential biases of convenience sampling?
Convenience sampling has several potential biases that can impact the validity of a study. It is important for researchers to be aware of these biases and to consider alternative sampling methods, such as stratified or random sampling, to ensure that their sample is representative of the population of interest.
Convenience sampling is a type of sampling method where the researcher selects participants who are easily accessible and willing to participate in the study. It is often used in qualitative research and in situations where the researcher has limited resources, such as time and budget. However, convenience sampling has several potential biases that can impact the results of a study and compromise its validity.
One of the main biases of convenience sampling is selection bias. This occurs when the sample is not representative of the population of interest, leading to an over- or under-representation of certain groups. For example, if a researcher conducts a survey on drug use among high school students and only surveys students who are present during lunchtime, they may miss the experiences and perspectives of students who are absent during that time or have different lunch periods.
Another potential bias of convenience sampling is response bias, which occurs when participants do not answer questions truthfully or accurately. This can happen if participants feel pressure to provide socially desirable answers, or if they are not motivated to participate in the study. For example, if a researcher conducts a survey on alcohol use among college students and only surveys students who are present in the student union building, they may miss the experiences and perspectives of students who do not use that building.
Finally, convenience sampling can also lead to bias in the results if the participants are not diverse enough in terms of their demographic characteristics, such as age, gender, ethnicity, or socio-economic status. This can limit the generalizability of the results to other populations, as the findings may not be representative of the broader population of interest.
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On a day when the temperature is 30° Celsius, a cool drink is taken from a refrigerator whose temperature is 5º. If the temperature of the drink is 20° after 10 minutes, what will its temperature be after 35 minutes? Answer: 29 °C (whole number)
The temperature of the drink will approach the room temperature as time passes. After 35 minutes, the temperature of the drink is likely to be close to the room temperature of 30° Celsius.
It's not possible to determine the exact temperature without additional information about the specific heat capacity and heat transfer rate of the drink and the surrounding environment. The rate of temperature change, can be affected by various factors such as the type of drink, the material of the container, and the surrounding environment. But an estimate of 29°C is reasonable based on the information given.
The temperature change of a substance over time can be modeled by the formula:
ΔT = k * t
where ΔT is the change in temperature, k is the cooling constant (representing how quickly the temperature decreases), and t is the time elapsed.
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the graph below shows the velocity versus time for an object from t = 0 to t = 10 s. what is the total distance traveled by the object during this time interval?
Distance travelled by object from 0 to 10 seconds is 50 m. We can calculate it using equation of motion.
We need to calculate the distance from 0 to 10 seconds for the object.
As in the question, acceleration is constant, we can thus utilize the equation of motion to calculate the value of distance using magnitudes of time and acceleration.
The equations of motion describe the time evolution of an object's position and velocity in a given force field.
[tex]s = ut + (1/2)at^{2}[/tex]
Insert the given values, and we get:
s = 2*10 + (1/2)*0.6*10*10S = 50 m
Therefore, distance is 50 m. As velocity is continuously increasing in magnitude, displacement will also be equivalent to the distance.
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Complete question: Image of the graph has been uploaded.
What is 25 degrees Celsius in Kelvin?
25 degrees Celsius is 298 Kelvin
What is temperature?
Temperature is a unit used to represent hotness or coolness on any of a number of scales, including Fahrenheit and Celsius. According to temperature, heat energy will naturally move from a hotter (body with a higher temperature) to a colder (body with a lower temperature) (one at a lower temperature).
The kelvin is the fundamental unit of temperature in the International System of Units (SI). Its identifier is K. The Celsius scale, in which 0 degrees corresponds approximately to the freezing point of water and 100 degrees to its boiling point at sea level, is frequently practical for use in common applications.
The formula is °C + 273.15 = K.
So, reading on a Kelvin scale is 25∘C + 273 = 298K.
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