explain why this happens by drawing another circuit that current can move through now that the switch is open. find
Answers
To explain why current can still move through a circuit even when the switch is open, let's consider a simple circuit consisting of a battery, a resistor, and a capacitor.
In this new configuration, the current can flow through two paths: one through the resistor and the capacitor (like before), and another through the bypass branch that includes the switch. The presence of the bypass branch allows the current to continue circulating even though the switch is open.It's important to note that the current flowing through the bypass branch will typically be very small compared to the current flowing through the original path (resistor and capacitor). This is because the impedance of the bypass branch is likely much higher than the impedance of the original path, resulting in a minimal current flow through it.
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Related Questions
an ice machine evaporator that uses evaporator tubing just above the cube molds is a(n) ____.
Answers
The ice machine evaporator that uses evaporator tubing just above the cube molds is a cooling mechanism.
How does the evaporator tubing in the ice machine's cooling mechanism function?The evaporator tubing in the ice machine's cooling mechanism operates by extracting heat from the water in the cube molds. It accomplishes this by circulating a refrigerant through the tubing, which absorbs the heat from the water, causing it to freeze and form ice cubes.
The evaporator tubing acts as a conduit for the refrigerant, facilitating the transfer of heat energy. As the refrigerant absorbs the heat, it undergoes a phase change, typically transitioning from a liquid to a gas.
This process allows the water to freeze and solidify into ice cubes. The evaporator tubing plays a crucial role in the ice-making process by enabling efficient cooling and ice formation.
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7. In a football game, the running back is running up the field. He starts from rest and runs for 3 seconds
with an acceleration of 2.5 m/s². What was the magnitude of his displacement?
a. 3.75 m
b. 11.25 m
C. 14.25 m
d. 22.5 m
Answers
Answer:
11.25m
Explanation:
Given parameters:
Initial velocity = 0m/s
Time of running = 3s
Acceleration = 2.5m/s²
Unknown:
Displacement = ?
Solution:
To solve this problem, we apply one of the motion equations.
S = ut + \(\frac{1}{2}\) at²
u is the initial velocity
t is the time taken
a is the acceleration
S = (0 x 3) + ( \(\frac{1}{2}\) x 2.5 x 3²) = 11.25m
A plane traveled for 3 hours at a velocity of 1200 km/hr North. What is the distance traveled?
Answers
Answer:
the answer is 3600 kilometers
is it possible that a converging lens (in air) behaves as a diverging lens when surrounded by another medium? give a reason for your answer. cj7 26.cq.017
Answers
Yes, it is possible for a converging lens (in air) to behave as a diverging lens when surrounded by another medium.
A converging lens typically bends light rays inward, causing them to converge at a single point, called the focal point. However, the behavior of the lens can change when it is placed in a different medium, due to the change in the refractive index. The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a given medium.
When a converging lens is placed in a medium with a higher refractive index than the lens material itself, the lens will behave as a diverging lens. This is because the light rays will bend away from the normal when they enter and exit the lens, causing them to spread out instead of converging.
In summary, a converging lens can behave as a diverging lens when surrounded by a medium with a higher refractive index than the lens material.
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Verify that each of the following expressions is a total differential, and find its primitive function: pini soclure gniwolloi adi soolava +1 (1) (x² + 2xy-y²)dx + (x²-2xy - y²)dy; (2) (2xcosy - y² sinx) dx + (2ycosx - x² siny) dy. 108
Answers
A total differential is an equation in which all the differentials can be integrated independently of each other. To verify that the given expressions are total differentials, we must check if they meet the conditions of being an exact differential function.The given expression is not an exact differential function.
According to the exact differential function, an expression dQ should be equal to the sum of two partial derivatives of the same function. i.e, dQ= dP+ dRA primitive function of an expression is obtained by integrating the given expression partially. Let's solve the given expressions, one by one:
1. Expression : (x² + 2xy-y²)dx + (x²-2xy - y²)dy. Now, we need to find the partial derivatives of the above function with respect to x and y.∂P/∂x = x² + 2xy - y² ∂Q/∂y = x² - 2xy - y².
On verifying, we get:∂P/∂x = ∂Q/∂y.
Hence, the given expression is an exact differential function.
To find the primitive function, we need to integrate any one of the partial derivatives with respect to x and other with respect to y.
∴ P(x,y) = ∫(x² + 2xy - y²)dx = x³/3 + x²y - xy² + C1 and ∴ Q(x,y) = ∫(x² - 2xy - y²)dy = x²y - y³/3 + C2.
Therefore, the primitive function of the expression is: P(x,y) = Q(x,y) = x³/3 + x²y - xy² - y³/3 + C2.
Expression : (2xcosy - y² sinx) dx + (2ycosx - x² siny) dy. Now, we need to find the partial derivatives of the above function with respect to x and y.∂P/∂x = 2cosy ∂Q/∂y = 2ycosx.
On verifying, we get:∂P/∂x ≠ ∂Q/∂y .
Hence, the given expression is not an exact differential function.
Therefore, there does not exist a primitive function for the given expression.
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find the angle between two forces of magnitude 27N and 30N if the magnitude of the resultant of the two force is 8N
Answers
Answer:
The angle between two forces is 165 degrees.
Explanation:
We have,
Force 1, \(F_1=27\ N\)
Force 2, \(F_2=30\ N\)
Resultant of two forces, F = 8 N
It is required to find the angle between two forces. The resultant of two force is given by the formula as follows :
\(F=\sqrt{F_1^2+F_2^2+2F_1F_2\cos\theta}\)
\(\theta\) is the angle between F₁ and F₂
So,
\(F^2=F_1^2+F_2^2+2F_1F_2\cos\theta\\\\\cos\theta=\dfrac{F^2-F_1^2-F_2^2}{2F_1F_2}\\\\\cos\theta=\dfrac{(8)^2-(27)^2-(30)^2}{2\times 27\times 30}\\\\\cos\theta=-0.966\\\\\theta=\cos^{-1}\left(-0.966\right)=165^{\circ}\)
So, the angle between two forces is 165 degrees.
What is force of gravity acting on 23.9 person
Answers
The force of gravity acting on 23.9 kg person is equal to 234.22 Newton.
What is force of gravity?Force of gravity is also referred to weight and it can be defined as the force acting on a physical object or body, especially due to the effect of gravity.
How to calculate the force of gravity on this person?Mathematically, the force of gravity on a physical body can be calculated by using this formula:
W = mg
Where:
W represents the force of gravity or weight.m represents the mass.g represents the acceleration due to gravity.Note: Acceleration due to gravity is equal to 9.8 m/s².
Substituting the given parameters into the formula, we have;
Force of gravity = 23.9 × 9.8
Force of gravity = 234.22 Newton.
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Complete Question:
What is force of gravity acting on 23.9 kg person?
How much has the ayompspheric co2 content in parts per million (ppm) increased since 1958
Answers
Answer:
c
Explanation:
Which of the following has the highest energy?
1) light with a long wavelength
2) light with an intermediate wavelength
3) light with a short wavelength
4) it is impossible to tell with the given information
Answers
The highest energy is the light with a short wavelength. Red has the least value since it has the shorter wavelengths of all visible light. Violet light has the shortest wavelength of all visible light, giving it the most energy. The longest wavelength and lowest energy are found in radio waves.
A sound signal traveling underwater has a frequency of 230 hertz. The speed of sound underwater is 1.45 × 103 meters/second. What is the wavelength of the sound signal?
Answers
Wavelength = (wave speed) / (frequency)
= (1,450 m/s) / (230 / sec)
= 6.30 meters (rounded)
Hope this helped friend! :)
Answer the wave length is 263
Explanation
A square wave can be synthesized as a series of odd harmonics with amplitudes
an=1na,n=1,2,3...., where a is the amplitude of the fundamental f1. Given that
a=10−3m find the amplitudes of the first five harmonics in the series of the square wave.
Answers
A square wave can be synthesized as a series of odd harmonics, where the amplitude of each harmonic is given by the formula an = 1/(na). In this case, the amplitude of the fundamental frequency (a) is 10^-3 m.
We are asked to find the amplitudes of the first five harmonics in the series.
1. For the first harmonic (n = 1), the amplitude is:
a1 = 1/(1 * 10^-3) = 1000 m
2. For the second harmonic, since n = 2 is not an odd integer, we skip it.
3. For the third harmonic (n = 3), the amplitude is:
a3 = 1/(3 * 10^-3) = 333.33 m
4. For the fourth harmonic, again n = 4 is not odd, so we skip it.
5. For the fifth harmonic (n = 5), the amplitude is:
a5 = 1/(5 * 10^-3) = 200 m
To summarize, the amplitudes of the first five harmonics in the square wave series are as follows: a1 = 1000 m, a3 = 333.33 m, and a5 = 200 m. Note that only odd harmonics contribute to the square wave, and even harmonics are not included in this analysis. The string vibrates at twice the fundamental frequency, which is the lowest possible standing wave. A wave is the vibration of a string. A vibrating string produces a sound with a constant frequency, or pitch, due to resonance. If the length or tension of the string is properly adjusted, a melodic tone will be created.
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if you wish to store a large amount of energy in a capacitor bank, would you connect capacitors in series or parallel? explain.
Answers
It implies that as the capacitance value increases, so will the quantity of the energy. Therefore, the capacitors should be connected together in parallel in order to store more power in a capacitor bank.
What are the uses of a capacitor bank?Capacitors are used in the distribution of electric power to rectify power factor. These banks are required to offset inductive loading caused by components like electric motors & transmission lines, which causes the load to seem to be primarily resistive.
Where are the banks of capacitors?banks of distribution capacitors. Distribution capacitors are put in place at substations, on the poles, or adjacent to the load. Even though these capacitors units serve the local demand with reactive power, they might not be able to lower feeder & transformer losses.
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In AC Theory, we are going to add components that will cause use to rely on Trigonometry to evaluate different types of Electrical Power. What three units of power will we be measuring
Answers
Answer:

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Home / AC Circuits / Power in AC Circuits

Power in AC Circuits
Electrical power consumed by a resistance in an AC circuit is different to the power consumed by a reactance as reactances do not dissipate energy
  
In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, for AC circuits with reactive components we have to calculate the consumed power differently.
Electrical power is the “rate” at which energy is being consumed in a circuit and as such all electrical and electronic components and devices have a limit to the amount of electrical power that they can safely handle. For example, a 1/4 watt resistor or a 20 watt amplifier.
Electrical power can be time-varying either as a DC quantity or as an AC quantity. The amount of power in a circuit at any instant of time is called the instantaneous power and is given by the well-known relationship of power equals volts times amps (P = V*I). So one watt (which is the rate of expending energy at one joule per second) will be equal to the volt-ampere product of one volt times one ampere.
Then the power absorbed or supplied by a circuit element is the product of the voltage, V across the element, and the current, I flowing through it. So if we had a DC circuit with a resistance of “R” ohms, the power dissipated by the resistor in watts is given by any of the following generalised formulas:
A train on a straight track goes in the positive direction for 5.9 km, and then backs up for 3.8 km
Answers
Answer:
2.1km
Explanation:
Ill take it as u are talking about the displacement
Since displacement has negatives and positves
5.9 - 3.8 = 2.1km
What is meant by the statement that the power of an electric heater is 1200W? What happens to the kinetic energy when the
velocity of a moving body is doubled?
Answers
The statement the power of an electric heater is 1200 W means that the electric heater used up 1200 J of electric energy in one second.
When the velocity of a moving body is doubled, its kinetic energy will become four times its initial kinetic energy.
What is power?Power is the rate at which energy is used up. The s.i unit of power is Watt (W).
From the question, if an electric heater is 1200 W, it means that the electric heater used up 1200 J of electric energy in one second
What is kinetic energy?Kinetic energy is the energy of a body in motion.
The formula for the kinetic energy of a body is given as
K.E = mv²/2From the equation above, it can be seen that if the velocity of a moving body is doubled, the kinetic energy of the body will become four times the initial kinetic energy of the body.
Hence, The statement the power of an electric heater is 1200 W means that the electric heater used up 1200 J of electric energy in one second.
When the velocity of a moving body is doubled, its kinetic energy will become four times its initial kinetic energy.
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5. according to the tables, which tested pipettor used was most precise? which parameter (average, standard deviation, ect.) did you use to decide this? explain. (4 points)
Answers
The most precise pipettor cannot be determined solely based on tables, as precision is determined by multiple parameters and depends on the specific experiment being performed.
To determine the most precise pipettor, one would need to look at the average, standard deviation, and coefficient of variation of the results obtained with each pipettor, as well as any systematic biases that might have affected the results.
Precision is a measure of the reproducibility or repeatability of a measurement, and is an important characteristic of laboratory equipment such as pipettors.
To determine the most precise pipettor, multiple parameters need to be considered, including the average, standard deviation, and coefficient of variation of the results obtained with each pipettor, as well as any systematic biases that might have affected the results.
The average is the mean or average value of the results obtained with each pipettor. The standard deviation is a measure of the variability or spread of the results, and is calculated as the square root of the variance. The coefficient of variation is a measure of the relative variability of the results and is calculated as the standard deviation divided by the mean.
The pipettor with the smallest standard deviation or coefficient of variation would be considered the most precise, as this would indicate that the results obtained with that pipettor are the most consistent and reproducible.
However, it is also important to consider any systematic biases that might have affected the results. For example, if one pipettor consistently gives results that are lower than expected, it may be considered less precise even if its standard deviation is smaller.
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in root pass welding, that electrode we are going to use?
Answers
Answer:
The root pass is made with a 5/32” (4.0mm) diameter electrode. A cellulosic electrode (E-XX10) is being used. The root pass is welded with reverse (DC+) polarity.
Explanation:
In root pass welding, that electrode we are going to use cellulosic electrode (E-XX10).
What is root pass welding?Short arc welding is commonly used for root pass welding to prevent blow through and overheating at the weld joint. Because there is less drooping and suck back, short arc welding is also commonly used on root pass joints.
The first pass in any welding process that combines two pieces or members into one structure is referred to as the root pass.
Subsequent passes raise the weld depth to the desired thickness, resulting in the required strength. The first pass usually serves as the foundation for subsequent filler passes.
A 5/32" (4.0mm) diameter electrode is used for the root pass. A cellulosic electrode (E-XX10) is being used. The root pass is welded with reverse (DC+) polarity.
Thus, cellulosic electrode (E-XX10) for this.
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Light travels in a straight line at a constant speed of 3.0 x 10 8 m/s for 4.1
years to reach the earth from the nearest star 3.9 x 10 13 km away. What is
its acceleration?
Answers
Answer:
Explanation:
As the velocity of light is constant so the acceleration of the light is equal to zero.
a=
dt
dv
If light travels in a straight line at a constant speed of 3.0 x 10 8 m/s for 4.1 years to reach the earth from the nearest star 3.9 x 10 13 km away then its acceleration would be zero meters/second².
What are the three equations of motion?There are three equations of motion given by Newton
The first equation is given as follows
v = u + at
the second equation is given as follows
S = ut + 1/2×a×t²
the third equation is given as follows
v² - u² = 2×a×s
As given in the problemLight travels in a straight line at a constant speed of 3.0 x 10 8 m/s for 4.1 years to reach the earth from the nearest star 3.9 x 10 13 km away.
As we know that acceleration is only possible when there is change in velocity, given that light is travelling with constant speed therefore the acceleration of the light must be zero.
Thus, the acceleration of the light would be zero .
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An automobile travels the first half of an 80.0 mi trip at 20.0 mi/h and the second half of the trip at 40.0 mi/h. What is the average speed for the entire trip?
Answers
This question involves the concepts of uniform speed motion and average speed.
The average speed for the entire trip is "26.67 mi/h".
First, we need to find out the total time taken for the entire trip. For that purpose, we will break the entire trip into two halves of uniform speed motion:
\(Total\ Time = t_1+t_2\\\\Total\ Time = \frac{s_1}{v_1}+\frac{s_2}{v_2}\\\\Total\ Time = \frac{40\ mi}{20\ mi/h}+\frac{40\ mi}{40\ mi/h}\\\\Total\ Time = 2\ h + 1\ h\\Total\ Time = 3\ h\)
Now, the average speed for the entire trip will be:
\(Average\ Speed = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Speed =\frac{80\ mi}{3\ h}\)
Average Speed = 26.67 mi/h
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The attached picture explains the concept of average speed.
a movable bin and its contents have a combined weight of 2.1 kn determine the shortest chain sling acb that can be used to lift the loaded bin if the tension in the chain is not to exceed 5 kn. the shortest chain sling acb that can be used is m.
Answers
The shortest chain sling ACB for a movable bin is 1.228 m.
The question is not complete. A similar question is in the attachment. Use the image in a similar question for this problem. Look at the picture. In the system works
Tension in the chain T₁ and T₂The weight of a movable bin = wTriangle ABC is an isosceles triangle. If ∠ CAB = ∠ CBA = θ.
T₁ = T₂ ≤ 5 kNT₁ = T₂ = 5,000 N AC = BCw = 2.1 kN = 2,100 N
At point C, the direction of the weight is upward.The forces T₁ and T₂ can be described with respect to the y-axes and become T₁y and T₂y. Look at triangle ACO
sin θ = T₁/T₁y
T₁y = T₁ sin θ Look at triangle BCO
sin θ = T₂/T₂y
T₂y = T₂ sin θ
According to Newton's first law, in the y-axis
∑ F = 0
w - T₁y - T₂y = 0
T₁y + T₂y = 2,100
T₁ sin θ + T₂ sin θ = 2,100
5,000 sin θ + 5,000 sin θ = 2,100
10,000 sin θ = 2,100
sin θ = 2,100 ÷ 10,000
sin θ = 0.21
θ = sin⁻¹ (0.21)
θ = 12.12°
Look at AOC
AO = OB = AB ÷ 2 = 1.2 ÷ 2 = 0.6 m cos θ = AO ÷ACcos 12.12° = 0.6 ÷ AC
0.978 = 0.6 ÷ AC
AC = 0.6 ÷ 0.978
AC = 0.614 mACB = AC + BC
ACB = 0.614 + 0.614
ACB = 1.228 m
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what current flows between a voltage of 120v across a resistance of 30Ω?
Answers
Answer:
4 amp
Explanation:
From ohm's law,
V=IR
so,
I=V/R
I=120/30
I=4amp ans..
A force of 450 N moves a body through 300 cm in the direction of force. Calculate the work
done by the force.
Answers
Answer:
150J
Explanation:
Formula : Work done
Force x distance
work done = force x distance
Distance should be measured in meters
300÷100=3m
work done = 450 x 3
=150J
I have a 10kg crate on top of a ramp that has a 30m long surface and rises 5m in the air. If the μk is .05, what is the speed at the bottom?
Answers
The speed at the bottom is 10 m/sec.
What is speed?The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.
I have a 10kg crate on top of a ramp that has a 30m long surface and rises 5m in the air. If the μk is .05,
work = change in kinetic energy
mgh = 0.5 mv²
10*10*5 = 0.5 * 10 * v²
v = 10 m/sec
The speed at the bottom is 10 m/sec
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g a resistive loop sits in a region of uniform magnetic field that increases linearly with time. there is no accumulation of net charge anywhere. a. is the induced current clockwise in the loop or counterclockwise? if there is no induced current, state so explicitly.
Answers
The correct answer to is the induced current clockwise in the loop or counterclockwise is: induced current in the resistive loop is clockwise.
This is due to the increasing magnetic field in the region, which induces a current in the loop in order to oppose the change in magnetic flux.
According to Faraday's Law, an induced current will be produced in a loop when there is a changing magnetic flux through the loop. The direction of the induced current is determined by Lenz's Law, which states that the induced current will be in a direction that opposes the change in magnetic flux.
In this case, the magnetic field is increasing linearly with time, which means that the magnetic flux through the loop is also increasing. To oppose this change in magnetic flux, the induced current must be in a direction that produces a magnetic field in the opposite direction. This means that the induced current will be clockwise in the loop.
In summary, the induced current in the resistive loop is clockwise due to the increasing magnetic field in the region, which induces a current in the loop in order to oppose the change in magnetic flux.
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What's the difference between a physical change and chemical change? in a quick, short and easy response please!
Answers
Chemical changes the color and everything like it becomes different.
Examples for physical change would be cutting a lemon because it’s not changing colors or chemically anything. And chemical would be photosynthesis turning radiant energy into chemical energy.
Please answer!
Ocean waves are hitting the seashore at a rate of 15 Hz. The distance between two successive crests is 3 m. Calculate the speed of the ocean waves. (note: crest/s = 1 Hz)
Answers
\( \sf \nu \: = \lambda \times \upsilon\)
λ = Wavelength [Given = 3 m]υ = Frequency [Given = 15 Hz]ν = Speed [To find]\( \sf \nu = 3 \times 15\)
\( \sf \nu \: = 45 \: m/s\)
➪The speed of ocean waves is 45 m/s...~
The value of acceleration due to gravity is less at the top of Mount Everest then that in the terai reason, why?
Answers
Answer:
The value of acceleration due to gravity is greater in terai than in mountain. In terai region the radius of earth is less as it lies close to the centre of the earth. Thus, the value of g is more in terai region.
Let the lifetime of a new Jet Ski be represented by a lognormal variable, Y = eX where X is normally distributed. Let the mean of the lifetime of the Jet Ski be six years with a standard deviation of three years. What proportion of the Jet Skis will last less than seven years?
a. 0.6293
b. 0.3707
c. 0.2877
d. 0.7123
Answers
The proportion of the Jet Skis will last less than seven years is d. 0.7123
What is mean variance ?
The variance of a random variable from its population mean or sample mean is expected in probability theory and statistics. The term "variance" refers to a measurement of how widely apart a group of numbers are from one another.
To solve the above equation
We take the mean and variance of a lognormal random variable Y are μY and σY2,then the mean of the normal variableX=ln(Y) is computed as μ=ln(μY2√μY2+σY2), and standard deviation is computed as σ=√ln(1+σY2μY2).
Compute
P(Y<7)=P(ln(Y)<ln(7)).
Therefore the proportion of the Jet Skis will last less than seven years is d. 0.7123
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In which of these can convection not occur?
gases
solids
liquids
fluids
Answers
Answer:
B: Solids
Explanation:
I have notes from EDG and I looked it up on the internet
I hope this helps
In the solids, convection can not occur. Convection can only be done in the fluids.
What is convection?Under the effect of gravity, hotter, less dense material rises while colder, denser stuff sinks, resulting in heat transfer"Convection is the ultimate mode of energy transmission to the surface"
There are three modes of the heat transfer;
1. Conduction
2. Convection
3. Radiation
Convection occurs in the fluid which is liquid and gases. Convection never occurs in the solid.
Hence option B is correct.
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What are the name of variables that do not change through out and experiment?
A. Dependent Variables
B. Independent Variables
C. Controlled Variables/ Constant
D. Variables They dont have a name
Answers
Answer:
The answer is C
Explanation: