suppose that the magnetic flux through a loop is increasing linearly with time. how does the induced emf in the loop depend on time?
Answers
According to Faraday's Law of Induction, an induced electromotive force (emf) is produced in a closed loop when the magnetic flux through the loop changes over time. If the magnetic flux through the loop is increasing linearly with time, the induced emf in the loop will also increase linearly with time.
This is because the rate of change of magnetic flux is directly proportional to the induced emf.
Mathematically, this can be expressed as:
EMF = -dΦ/dt
Where EMF is the induced electromotive force, Φ is the magnetic flux, and dt is the time interval. If the magnetic flux is changing at a constant rate, then the induced emf will also be constant.
However, if the magnetic flux is changing at a non-constant rate, the induced emf will change accordingly.
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Related Questions
Please help me make a circuit that mainly includes a transistor to a a drive dc motor that works in a clockwise direction when the switch is off and counterclockwise when the switch is on. the circuit should also have LDR, Stepper Motor, Switch, DC Motor, and resistors
Answers
he circuit that mainly includes a transistor to drive a DC motor that works in a clockwise direction when the switch is off and counterclockwise when the switch is on should include the following parts:
1. Transistor It is the most important component in this circuit. Transistor drives the DC motor to rotate in both directions.2. DC Motor The DC motor rotates in the clockwise direction when the switch is off and in the counterclockwise direction when the switch is on.3. Stepper Motor It is used for positioning accuracy in precision control applications.4. Switch It is used to turn on and off the circuit.5. LDR It is used as a light sensor in this circuit.6. Resistors These components are used to limit the current flow in the circuit.The following is the schematic diagram of the circuit that mainly includes a transistor to drive a DC motor that works in a clockwise direction when the switch is off and counterclockwise when the switch is on:Here are the instructions to make the circuit:
1. Take a breadboard and place the transistor on it.2. Connect the emitter of the transistor to the ground and the collector to the DC motor.3. Connect one terminal of the DC motor to the positive terminal of the power source and the other terminal of the DC motor to the negative terminal of the power source.4. Connect one terminal of the switch to the base of the transistor and the other terminal of the switch to the positive terminal of the power source.5. Connect the LDR and the resistor in series and connect them between the base of the transistor and the ground.6. Connect the stepper motor to the breadboard and control it using a stepper motor driver.7. Connect the power source to the breadboard.About TransistorTransistors are semiconductor devices that are used as amplifiers, as circuit breakers and current connectors, voltage stabilization, and signal modulation. Some of the functions of transistors include as current amplifiers, as switches (breakers and connectors), voltage stabilization, signal modulation, rectifiers and so on. . The transistor consists of 3 terminals (legs), namely base/base (B), emitter (E) and collector/collector (K).
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You are heating a substance in a test tube. Always point the open end of the tub
Answers
-I could be wrong but I am pretty sure since you wouldn’t point something dangerous towards others :/
Answer:
Away from all ppl
Explanation:
A stone is thrown vertically upward. At the top of its vertical path its acceleration is
A) zero.
B) 10 m/s2.
C) somewhat less than 10 m/s2.
D) undetermined.
Answers
The acceleration of the stone at the top of its vertical path is C) somewhat less than 10 m/s².
When the stone is thrown vertically upward, it experiences a downward acceleration due to gravity. As it moves upward, the gravitational force acts in the opposite direction of its motion, slowing it down. At the highest point of its trajectory (the top of its vertical path), the stone momentarily comes to a stop before reversing direction and falling back down.
Since the stone reaches a momentary stop at the top, its velocity changes from positive (upward) to zero. Therefore, the stone experiences a deceleration (negative acceleration) at the top. While the acceleration due to gravity on Earth is approximately 9.8 m/s², it is somewhat less than that at the top because the stone is decelerating but not yet accelerating downward.
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A Ray of light falling on rough surface follows the laws of reflection but no image of the object placed before it is C explain why it is so?
Answers
Answer:
The light rays falling on a rough surface does follow the laws of reflection. The light rays are incident parallel on the rough surface but due to uneven surface the light rays are not reflected parallel rather they are reflected in different direction. Hence, no image is formed.
When dropped from rest, any object will fall a total distance of 19.6 m in the first 2 seconds of its fall. How far
does the object fall just during the 2nd second (i.e., from time t= 1 s to t = 2 s)?
Answers
Answer: The acceleration due to gravity increases the velocity of a falling object by 9.8 m/s per
second. Answer B is wrong because velocity increases. Answer C is wrong because the
distance increases every second. Ans. E is wrong because the derivative of distance with
respect to time gives the velocity, not the acceleration.
Explanation:
Question 3 of 10
Which sentence best explains the difference between potential energy and
kinetic energy?
A. Potential energy is related to an object's motion, and kinetic
energy is related to its position.
B. Potential energy is related to an object's position, and kinetic
energy is related to the arrangement of its particles.
C. Potential energy is related to an object's shape, and kinetic energy
is related to its position.
D. Potential energy is related to an object's position, and kinetic
energy is related to its motion.
SUBMIT
Answers
Answer
D
Explanation:
Potential energy is related to an object's position, and kinetic
energy is related to its motion.
Question 4 of 10
Which of the following changes occurs naturally in a system over time?
A. Becoming more organized
B. Becoming more efficient
C. Increasing in energy
OD. Increasing in randomness
Answers
Answer: D. Increasing in randomness.
Explanation: The concept related to this change is entropy. Entropy is a measure of the randomness or disorder in a system. According to the second law of thermodynamics, the entropy of an isolated system tends to increase over time. This means that natural processes often lead to an increase in randomness or disorder.
For example, imagine a container of gas molecules. Initially, the molecules may be confined to one side of the container, creating a region of higher concentration. However, over time, the gas molecules will naturally spread out and become more evenly distributed throughout the container. This increase in randomness or disorder corresponds to an increase in entropy.
find the relationship between 'g' and 'G'
Answers
Establishing a high critical value when calculating the results of a statistical test means that a researcher will have more confidence in finding significance than when a lower critical value is established. Please select the best answer from the choices provided T F
Answers
The statement 'establishing a high critical value in a statistical test is associated with more confidence' is TRUE.
What is statistical significance?The statistical significance is a arbitrary value used to indicate that data collected can be used to confirm (or reject) my working hypothesis.
The most widely used value to measure the statistical significance is the p threshold.
In conclusion, the statement 'Establishing a high critical value when calculating the results of a statistical test means that a researcher will have more confidence in finding significance than when a lower critical value is established' is TRUE.
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Answer:
The answer is F or false
Explanation:
correct edge 2023
A planet was discovered by the Kepler space telescope. The planet had a mass of8.0 x 10^27kg and a radius of 1.0 x 10^8m. What is the value of the acceleration due to gravity on the surface of the planet?
Answers
Answer:
\(g=53.36\ m/s^2\)
Explanation:
Given that,
The mass of the planet, \(M=8\times 10^{27}\ kg\)
The radius of the planet, \(R=10^8\ m\)
We need to find the value of the acceleration due to gravity on the surface of the planet. The formula for the acceleration due to gravity is given by :
\(g=\dfrac{GM}{R^2}\\\\g=\dfrac{6.67\times 10^{-11}\times 8\times 10^{27}}{(10^8)^2}\\\\g=53.36\ m/s^2\)
So, the value of acceleration due to gravity on the surface of the plate is equal to \(53.36\ m/s^2\).
Silver has a density of 10.5g/cm3 and gold has a density of 19.3g/cm3. Which would have a greater mass, 5cm3 of silver or 5cm3 of gold ?
Answers
Silver has a density of 10.5 g/ \(cm^3\) and gold has a density of 19.3 g/ \(cm^3\), so out of 5 \(cm^3\) of silver or 5 \(cm^3\) of gold, the 5 \(cm^3\) of gold would have a greater mass as the mass of gold is 96.5 g while the mass of silver is 52.5 g.
What is the relationship between density and mass?The mass of an object is equal to its density multiplied by its volume, so here is the calculation,
For 5 \(cm^3\) of silver, the mass is,
mass = density x volume
mass = 10.5 g/ \(cm^3\)x 5 \(cm^3\)= 52.5 g
For 5 \(cm^3\) of gold, the mass is
mass = density x volume
mass = 19.3 g/ \(cm^3\)x 5 \(cm^3\)
mass = 96.5 g
Hence, silver has a density of 10.5 g/ \(cm^3\) and gold has a density of 19.3 g/ \(cm^3\), so out of 5 \(cm^3\) of silver or 5 \(cm^3\) of gold, the 5 \(cm^3\) of gold would have a greater mass as the mass of gold is 96.5 g while the mass of silver is 52.5 g.
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A guitar sounds a "A" with a pitch of 440 Hz. What are the frequencies of the next three harmonics?
Answers
The harmonic frequencies would be 880 Hz, 1320 Hz, 1760 Hz, and 2200 Hz if the fundamental frequency was 440 Hz.
What is the wavelength of a sound wave in a particular medium with a frequency of 220 Hz and a speed of 440 m per second?The sound waves have a wavelength of 2m and travel at a speed of 440 m/s. Hence, the sound wave has a 2 m wavelength.
What wavelength does an air tone at 340 Hz have? What is the airborne ultrasonic wave's wavelength at 34000 Hz?340 m/s x 340 Hz x 1 m = 340 m/s, the formula for wavelength. A 34,000 hertz wave has a wavelength of 340 m/s, and its frequency is 0.01 m, or 1 cm.
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What information is included in the general
profile for a serial killer/ criminal?
How do the 4 different types of serial killers
differ from each other?
Describe the typical childhood of a serial
criminal. What types of childhood trauma is
typically found in the background of serial
criminal?
What types of behavioral changes occur from pre-crime to crime spree to post-crime? Are there any warning signs that begin to committheir crimes?
Answers
A serial killer is one that goes on from one place to another killing people everywhere.
Who is a serial killer?The information about a serial killer that is documented are;
demographic information, such as age, sex, race, occupation, education level, etc.Behavior patterns include things like the modus operandi (MO), signatures, and criteria for choosing victims, among others.Psychopathy, emotional stability, intellect, and personality disorders are examples of personal traits.criminal history, including prior infractions, arrest records, and sentence.Information on a person's relationships, relationships, and other events are included in their social history.Learn more about a serial killer: https://brainly.com/question/29513340
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help will mark brain list
A device represented by jagged lines in a circuit diagram that is used to transform electrical energy into other forms is _____.
a conducting wire
an energy source
a switch
a resistor
Answers
Two people try to lift a heavy box. Jack pulls upward with a 100-newton
force. Jill pulls upward with a 50-newton force, but neither person moves the
box.
Compare the amount of work done on the box by Jack and Jill.
OA) Jack did twice as much work as Jill.
OB) Jack did fifty times more work than Jill.
OC) Jack and Jill did the same amount of work.
Answers
Answer:
A ( Jack did twice as much work as Jill
Explanation:
Four different balls with different masses (measured in grams) were dropped from the same height on Earth. Assuming no other forces acted on the balls, match each ball with the gravitational force (measured in newtons) it experienced as it fell.gravitational force = 9.8 m/s2
Answers
We will have the following:
1. 143 g = 0.143 kg:
\(F=(0.143kg)(9.8m/s{}^2)\Rightarrow F=1.4014N\)2. 110 g = 0.110 kg:
\(F=(0.110kg)(9.8m/s^2)\Rightarrow F=1.078N\)3. 410 g = 0.410 kg:
\(F=(0.410kg)(9.8m/s^2)\Rightarrow F=4.018N\)4. 46 g = 0.046 kg:
\(F=(0.046kg)(9.8m/s^2)\Rightarrow F=0.4508N\)From this we can see that the given weights do not correspond to any of the values of column B, since the calculations to obtain the values of column B were done using grams, instead of kg, thus those values do not correspond to the unit of force Newtons.
why does the magnetic field allow some of the solar energy but not all?
Answers
The interaction between the solar wind and the Earth's magnetic field can result in a transfer of energy and momentum from the solar wind to the Earth's magnetosphere. This can cause phenomena such as auroras and geomagnetic storms.
However, not all of the energy from the solar wind is able to penetrate the Earth's magnetic field and reach the surface of the Earth. Some of the charged particles in the solar wind are deflected or absorbed by the magnetic field before they can reach the Earth's surface. This is why the Earth's magnetic field can block some of the solar energy, while allowing some of it to pass through and interact with the Earth's atmosphere.
Additionally, the Sun emits energy in various forms, including light and other forms of electromagnetic radiation. While the Earth's magnetic field can block some of the charged particles in the solar wind, it has no effect on these forms of radiation, which can reach the Earth's surface and provide energy for photosynthesis, heating, and other processes.
I can't figure out the analysis, discussions or sources of error
Answers
Answer:
Common sources of error include instrumental, environmental, procedural, and human. All of these errors can be either random or systematic depending on how they affect the results. Instrumental error happens when the instruments being used are inaccurate, such as a balance that does not work
Explanation:
For the love of God please help me before my mom gets angry about my horrible grades
A 170.0 g sample of a substance is heated to 120.0 °C and then plunged into 200.0 mL of water at 10.0 °C. The resulting mixture has a temperature of 12.6 °C. What is the specific heat capacity of the substance?
I'LL GIVE BRAINLIEST!!!!
Answers
Answer:
Heat Lost = (120 - 12.6) deg * 170 g * S = `18260 gm-deg * S
Heat Gained = (12.6 - 10) deg * 200 gm* 1 cal/ gm-deg - 520 cal
S = 520 / 18260 cal / gm-deg = .0285 cal / gm-deg
Since Heat Lost = Heat Gained
Processes such as dissolving, melting, freezing, and evaporationg can affect the appearance of a substance, but the identity of the substance remains the same. These processes are called
A. physical properties
B. chemical change
C. chemical process
D. physical change
Answers
Which city is known as the richest square mile on earth?.
Answers
Answer:
Central City is the county seat and the most populous municipality of Gilpin County. The city is a historic mining settlement founded in 1859 during the Pike's Peak Gold Rush and came to be known as the "Richest Square Mile on Earth".
4. Originally the skater had no energy of any type at rest on the ground. You picked up the skater giving the skater potential energy and height to start. What physics term describes what you did to transfer energy to the skater by doing this
Answers
The physics term that describes what you did to transfer energy to the skater is Work.
Work is a physical concept that describes the amount of energy needed to perform a given task, and it is typically measured in Joules (J). Work occurs when a force is applied to an object and it causes the object to move in the same direction as the force. What is energy?Energy is defined as the capacity to do work. Energy comes in many different forms, including potential, kinetic, and thermal energy. The total energy of a system remains constant, but energy can be transferred from one form to another, depending on the situation. What is potential energy?Potential energy is energy that is stored in an object due to its position or configuration. An object that is lifted off the ground has potential energy due to its height above the ground.What is kinetic energy?Kinetic energy is energy that an object possesses due to its motion. The faster an object moves, the greater its kinetic energy.What is thermal energy?Thermal energy is a form of energy that is related to the temperature of an object or system. The hotter an object or system, the greater its thermal energy.
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Net arc energy input Hnet=fxHnet
Answers
The equation you are referring to, Hnet=fxHnet, relates to the net arc energy input of a welding process.
The net arc energy input, Hnet, is equal to the product of the welding current, f, and the welding voltage, Hnet. This equation is used to calculate the amount of energy that is transferred to the weld during the welding process.
It is important to monitor the net arc energy input to ensure that the weld is of high quality and to prevent defects such as porosity and cracking.
By adjusting the welding current and voltage, the net arc energy input can be optimized for the specific welding application.
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When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy
Please select the best answer from the choices provided
T
F
Answers
Answer:
TRUE
Explanation:
When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy. The transformation happens when the magnetic field produced by the current causes the wire to move.
In an experiment, a ringing bell is placed in a vacuum jar that does not have any air in it. What best describes why the bell is seen vibrating but not heard?
Answers
Answer:
C. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present.
Explanation:
The reason the bell is seen to vibrate but not heard is that unlike light, which does not require a medium to pass through, sound waves require an air-filled space in order to vibrate. Option C is correct.
What is a sound wave?A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.
Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, the sound is not created where no air is present best describes why the bell is seen vibrating but not heard.
The complete question is attached.
Hence option C is correct.
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A given net force propels an object along a straight-line path. If the net force were doubled, its
acceleration would
A) quadruple.
B) double.
C) stay the same.
D) be half.
E) none of the above
Answers
If the net force propelling an object along a straight-line path is doubled, its acceleration would double as well (Option B).
According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The equation for this relationship is F = ma, where F represents the net force, m represents the mass of the object, and a represents the acceleration.
When the net force is doubled (F' = 2F), and the mass remains constant, the equation becomes 2F = ma. Rearranging the equation, we have a = (2F) / m.
As the mass (m) remains the same, the acceleration (a) will be directly proportional to the net force (F). Therefore, doubling the net force will result in double the acceleration.
Hence, Option B, double, is the correct answer.
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I have an atomic mass of 108. Who am I?
Answers
Two point charges, 9, = 1. 6 x 10-7 C and 92 = -6. 4 x 10-8 C, are held 37. 0 cm apart. (Assume q, is on the right. ) (a) What is the electric field (in N/C) at a point 5. 0 cm from the negative charge and along the line between the two charges? 2. 58825E5 X N/C magnitude direction to the right v (b) What is the force (in N) on an electron placed at that point? magnitude N direction to the left
Answers
(a) The electric field at a point 5.0 cm from the negative charge and along the line between the two charges is -2.58825 x 10⁵ N/C, directed towards the negative charge. (b) The force on an electron placed at that point is 2.58825 x 10⁻⁵ N, directed towards the positive charge.
The electric field at a point due to a point charge is given by the equation E = k * q / r², where E is the electric field, k is the electrostatic constant (k = 9 x 10⁹Nm² /C² ), q is the charge, and r is the distance between the charges.
(a) To find the electric field at a point 5.0 cm from the negative charge, we need to calculate the electric field due to both charges and then subtract the electric field due to the positive charge from the electric field due to the negative charge.
The electric field due to the negative charge (q2) is given by E2 = k * q2 / r², where q2 = -6.4 x 10⁻⁸ C and r = 5.0 cm = 0.05 m.
Plugging in the values, we get E2 = (9 x 10 Nm² /C² ) * (-6.4 x 10 C) / (0.05 m)² = -2.58825 x 10⁵ N/C.
The negative sign indicates that the electric field due to the negative charge is directed towards the negative charge.
(b) To find the force on an electron placed at that point, we need to calculate the force due to both charges and then subtract the force due to the positive charge from the force due to the negative charge.
The force between two charges is given by the equation F = k * |q1 * q2| / r², where F is the force, q1 and q2 are the charges, and r is the distance between the charges.
The force on the electron due to the negative charge (q2) is given by F2 = k * |q2 * e| / r², where q2 = -6.4 x 10⁻⁸ C, e is the charge of an electron (e = -1.6 x 10⁻¹⁹ C), and r = 5.0 cm = 0.05 m.
Plugging in the values, we get F2 = (9 x 10⁹ Nm²/C²) * |-6.4 x 10⁻⁸ C * -1.6 x 10⁻¹⁹ C| / (0.05 m)² = 2.58825 x 10⁻⁵ N.
The positive sign indicates that the force on the electron is directed away from the negative charge, which is towards the positive charge.
So, the answers to the given questions are:
(a) The electric field at a point 5.0 cm from the negative charge and along the line between the two charges is -2.58825 x 10⁵ N/C, directed towards the negative charge.
(b) The force on an electron placed at that point is 2.58825 x 10⁻⁵ N, directed towards the positive charge.
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Light waves are electromagnetic waves that travel at 3.00 x 10^8 m/s. The eye is most sensitive to light having a wavelength of 5.50 x 10^-7 m.
a. Find the frequency of this light wave.
b. Find its period.
Answers
Answer:
a. Frequency is 5.45 x 10^14 hz
b. The period = 1.8 x 10^-15 sec {or 1.8 femptoseconds]
Explanation:
The velocity of an electromagnetic wave is given by the product of the wave's frequency(f) times its wavelength(λ).
V = λ f where,
V is the wave speed,
f is the wave frequency,
λ is the wavelength.
To find frequency, rearrange to:
f = V/ λ
Light travels at 3.00x10^8 m/sec.
λ is 5.50 x 10^-7 m
f = (3.00x10^8 m/sec)/(5.50 x 10^-7 m) meters cancels, secs is on the bottom]
f = (3.00/5.50)*(10^15) [The base 10 exponent on the bottom ius subtracted from the one on top: 98-(-7)) = 15)
f = 0.545 x 10^15 1/s or hz
f = 5.45 x 10^14 hz
b. The period of a wave is the inverse of it's frequesncy. It is the time it takes for 1 wave to pass. Invert the frequency:
Period = 1/f
Period = 1/(0.545 x 10^15 1/s)
Period = 1.8 x 10^-15 sec {or 1.8 femptoseconds]
Do the voltages Vab and Vbc corroborate your observations of the brightness? Explain
Observations: the first light bulb (between a and b) is bright and the other two are dim.
Vab=3.956
Vbc=0.569
Answers
Yes, the voltages Vab and Vbc corroborate the observations of the brightness.
How can we observe this?
The first light bulb between a and b is bright and the other two are dim because the voltage difference between a and b is much larger than the voltage difference between b and c.
This is supported by the fact that Vab is 3.956 volts and Vbc is only 0.569 volts.The brightness of a light bulb is directly proportional to the voltage across it.
The greater the voltage, the brighter the light bulb.
Therefore, the first light bulb is brighter because it is connected to a and b where the voltage is 3.956 volts.
The other two light bulbs are dim because they are connected to b and c where the voltage is only 0.569 volts.
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