The change in entropy ΔS of the object when the object is 20∘C absorbs 25.0 J of heat is 85 J/K. The change in entropy ΔS of the object at 500 K dissipates 25.0 kJ of heat into the surroundings is - 50 J/K. The change in entropy ΔS of the object at 400 K absorbs 25.0 kJ of heat from the surroundings is 62.5 J/K. The net change in entropy ΔSsys of the system which is at 400 K, absorbs 25.0 kJ of heat from the other object, which is at 500 K is 12.5 J/K.
Let's make use of the entropy equation: ΔS = Q/T
Given:
(a) T = 20°C = 20 +273 = 293K
Q = 25.0 kJ
Entropy change will be:
ΔS = 25000/293 = 85 J/K.
(b) Given:
T = 500K
Q = -25.0 kJ
Entropy change will be:
ΔS = -25000/500
= - 50 J/K
Given:
T = 400K
Q = 25.0 kJ
Entropy change will be:
ΔS = 25000/400
= 62.5 J/K
Given:
T1 = 400K
T2 = 500K
Q = 25.0 kJ
The net entropy change will be
ΔS = (25000/400) + (-25000/500)
= 12.5 J/K
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When a honeybee flies through the air it develops a charge of +20pC. How many electrons did it lose in the process of acquiring this charge? Express answer as a number
When a honeybee flies through the air it develops a charge of +20pC, the electrons lost during the process of acquiring this charge is 1.25×10⁸ electrons.
How are protons and electrons calculated?Use an atom's atomic number and mass number to determine how many subatomic particles are present in it: Atomic number = number of protons. Atomic number = number of electrons. Mass minus atomic number equals the quantity of neutrons.
The honeybee's charge
Q = 20 pC = 20 × 10⁻¹² C
The current equation for the number of electrons is
n = Q/e
Where;
e is charge on electron = 1.6 × 10⁻⁻¹⁹ C
n = (20 × 10⁻¹²)/(1.6 × 10⁻¹⁹)
n = 1.25×10⁸ electrons.
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impulse: a golf ball of mass 0.050 kg is at rest on the tee. just after being struck, it has a velocity of 102 m/s. if the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball by the club?
The average force exerted on the ball by the club is 6296.3 N.
What is force?Force is characterised as an external cause that, when applied, alters or has the potential to alter a body's state. The body comes to rest when it is in motion, and it goes into motion when it is at rest. The body's direction, shape, size, etc. may also change as a result of it.
An illustration would be to push or forcefully push a door. Force has both a magnitude and a direction because it is a vector quantity. Force is described as the "product of a body's mass and acceleration" in Newton's second law.
we know that
FΔt = impulse = change in momentum = mv
Average force exerted = mv/t
F(avg) = 0.05 × 102/(0.81×10⁻³)
= 6296.3 N
Thus, The average force exerted on the ball by the club is 6296.3 N.
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the speed limit on some interstate highways is roughly 135 km/h. (for each answer, enter a number.) (a) what is this in meters per second? m/s (b) how
Some interstate routes have a 120 km/h speed limit. In how many meters per second is this? ... two - thirds ( 65 meters per second is approximately what 120 km/h is.
What does physics mean by speed?
In physics, speed is a scalar, which means it has just magnitude. It outlines the amount of time needed to travel between two points. How does physics determine speed In order to calculate speed in mathematics, you must divide total distance between two points by the amount of time it takes to get there.
What's the secret to speed?
Speed Formula 1 s stands for speed in m.s.-1, d for distance in m, and t for duration in s.
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pressure is question 3 options: a) cannot be determined using newton's second law. b) the rate change of time of momentum c) the rate change of time of momentum divided by area. d) none of the above
Pressure is the rate change of time of momentum divided by area. The correct answer is c.
Pressure is a measure of how much force is applied per unit area. It is defined as the rate of change of momentum of a fluid per unit area. This means that if a fluid is pushed against a surface, the pressure at that point is equal to the force exerted on the surface divided by the area of the surface.
Newton's second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration, which is not directly related to pressure. Pressure is a scalar quantity and has no direction, it is a measure of how much a force is pushing or pulling in all directions.
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in which case does the wall exert a greater force on the ball: when it hits the wall and bounces back at the same speed or when it hits and sticks to the wall? assume the time intervals over which the force is exerted are the same in both cases.
The wall exerts a greater force on the ball when it hits and sticks to the wall. This is because in this case, the wall is exerting a static force on the ball, while in the other case, the wall is exerting a dynamic force on the ball as it rebounds.
what is force ?
Force is a physical quantity that can be described as an action or influence that causes a change in an object's motion, direction, shape, or energy. It can be measured in terms of energy per unit of time, or momentum per unit of time. Force can be applied to an object by another object, and can also be applied by a person.
Force can be exerted by an object when it is acted upon by another object, such as when a person pushes a door open. Force can also be exerted by a person, such as when a person kicks a ball. Force can be either attractive or repulsive, and can cause objects to move, stop, or accelerate. Forces can be caused by contact between two objects, or by the application of a field of force, such as gravity or electrostatic forces.
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a charged particle with a mass of m and a charge of q is injected midway between the plates of a capacitor that has a uniform electric field of e. what is the acceleration of this particle due to the electric field?
Eq/m is the particle's acceleration as a result of the electric field, as stated in the preceding sentence.
What is the principle behind a capacitor?To hold energies in an electrical circuit, a capacitor is a device. The idea behind how a capacitor functions is that if a earthed conductor is moved close to a conductor, its capacitance increases noticeably. In light of this, a capacitor consists of two plates with equal and opposing charges that are spaced apart.
Force is also ma, and the force acting upon that charge is qE. Acceleration a may be calculated by setting qE = ma.
Consequently a = Eq/m
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Which of the waves below..
A) Has the highest frequency?
B) Has the highest amplitude?
C) Is the quietist?
D) Is the lowest pitch?
Answer:
a.) C.
b.)b.
c.)E.
d.)A.
Item 15 Water flowing in a horizontal pipe speeds up as it goes from a section with a large diameter to a section with a small diameter. Which of the following can explain why the speed of the water increases
Water flowing in a horizontal pipe speeds up it goes from a large-diameter section to a small-diameter section the speed of the water increases due to work is done because the water in the larger pipe has a higher pressure.
What happens to the flow rate of fluid when it moves from a wide pipe to a narrow pipe?When the pipe enters a narrower area, the fluid moves more quickly; when it enters a wider area, it moves more slowly. The volumetric flow rate, also known as current, and fluid velocity both refer to the speed at which a fluid moves, but they describe different aspects of the fluid differently.
In order to keep their volume flow rate constant when they enter a small, constricted space, incompressible fluids must accelerate. This is the reason why a narrow hose nozzle makes water move more quickly.
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Because more work must be done to overcome the greater pressure of the water in the larger pipe when it moves from a section of a horizontal pipe with a large diameter to one with a smaller diameter, the speed of the water increases.
What happens to the flow rate when a fluid is moved from a wide pipe to a narrow pipe?In the pipe, the fluid moves more quickly through the narrower sections and more slowly through the wider ones. Although they both relate to the rate at which a fluid moves, fluid velocity and the volumetric flow rate, also known as current, characterize the fluid in different ways.
When entering a small, limited area, incompressible fluids must accelerate in order to maintain a constant volume flow rate. This is the basis behind the thin hose nozzle's ability to speed up water flow.
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The complete question is " Water flowing in a horizontal pipe speeds up as it goes from a section with a large diameter to a section with a small diameter. Which of the following can explain why the speed of the water increases? "
A pair of 10-N vectors at right angles to each other has a resultant of about?
A. 10N. B. 14 N. C. 20 N. D. none of the above
The combination of two 10-N trajectories at perpendicularly is approximately 14 N.
What exactly are vectors, exactly?A quantity or phenomena with independent qualities for both size and direction is called a vector. The word can also refer to a quantity's mathematical or geometrical representation. Movement, momentum, force, electric interference, and weight are a few elements of axes in nature. To "transport" something from point A to point B, a vector is required; the Latin root of the word vector implies "carrier". Astronomers studying the planetary rotation around the Sun in the 18th century were the first to apply it.
Resultant vector [tex]$\vec{\gamma}$[/tex] can be written as
[tex]$$\begin{aligned}\vec{r} & =10 \hat{i}+10 \hat{\jmath} \mathrm{N} \\|\vec{r}| & =\sqrt{(10 \mathrm{~N})^2+(10 \mathrm{~N})^2} \\|\vec{\gamma}| & =10 \sqrt{2} \mathrm{~N} \\|\vec{r}| & =14.14 \mathrm{~N} \\|\vec{r}| & =14 \mathrm{~N}\end{aligned}$$[/tex]
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the mass of planet w is 1/100 that of earth and its radius is 1/4 that of earth. if the weight of an object is 600 n on earth, what would it weigh on planet w? group of answer choices 96 n 48 n 24 n 600 n 192 n
A human would weigh w = 96 N on the fictitious planet. The hypothetical planet has a mass of M/100. The hypothetical planet has a radius of R/4. W = 600 N is the weight of an individual on earth.
What is the best definition of mass?a way to gauge the amount of material that is present in or makes up a physical body. The mass of an object is important to Newton's equations of motion in classical mechanics because it affects the force required to accelerate it and, subsequently, how much inertia it has.
What distinguishes mass from weight?Between mass and weight, there is Weight is a measure of force, whereas mass is a measure of inertia.t).
F = GMm/R² ( m - mass of the person)
mg = GMm/R²
f = w= 16GMm/100R²
=16/100×(mg)
=16/100×(600)
w= 96N
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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.
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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after the capacitor is charged to its maximum value, the capacitor and resistor are disconnected from the battery and from each other. then they are connected in parallel, so that the capacitor discharges through the resistor. how long will it take for the voltage across the capacitor to drop to 2.50 v?
The time will it take for the voltage across the capacitor to drop to 2.50 v is t=1386.3sec
What is a capacitor, and what is its formula?The fundamental equation for capacitors is charge = capacitance x voltage. Q = C x V. It is the capacitance that holds one coulomb of charge per one volt (defined as the quantity of charge transferred by one amp in one sec) that is measured in farads.
What function does a capacitor serve?a capacitor is an electrical energy storage device that consists of two conductors that are isolated from one another and placed near to one another. A straightforward illustration of one such storage device is a parallel-plate capacitor.
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suppose the mass of a fully loaded module in which astronauts take off from the moon is 13,800 kg. the thrust of its engines is 28,500 n. (assume that the gravitational acceleration on the moon is 1.67 m/s2.) (a) calculate (in m/s2) its magnitude of acceleration in a vertical takeoff from the moon. (enter a number.)
The rocket will shoot from the moon at a velocity of 0.39 m/s, in accordance with the question.
What is a massive example?The mass of matter that makes up every item or body is the simplest way to understand mass. Every that we can see has mass.
F=ma
First Law of Motion (remember this equation)
28500 = 13800 * a
(Kg is the measurement of mass, while N is a measure of force.)
calculate a
In empty space, the velocity would be at a = 2.06 m/s2, but the moon is pulling it down.
We deduct it from acceleration because downward motion is the direction in which the item is traveling.
2.06-1.67 = 0.39
Consequently, the rocket will ascend at 0.39 m/s.
how thick is the oil? suppose that the density of oil is 900 kg/m3.
The oil is 1 meter thick if the density of oil is 900 kg/m³ and it is kept in a cube shape container of 1 m³ volume.
The density of a substance is defined as the mass contained by the unit volume of the substance. In other words, density is the ratio of the mass and volume of a substance.
Density(d) = Mass(m)/volume(V)
Its SI unit is kg/m³.
If the density of oil is 900 kg/m³. And the volume of cube shaped container is 1 m³. V = 1 × 1 × 1 m³
So the depth would be 1 m³.
--The given question is incomplete, the complete question is
"How thick is the oil? suppose that the density of oil is 900 kg/m³, and it is kept in cube shaped container of 1 m³ volume.
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q2. initially, a car of mass 400 kg traveling with a speed of 72 kmph accidentally crashes into a car of mass 4000 kg. before the collision, the truck was traveling at a speed of 9 kmph, in the same direction as that of the car. as a result of the collision, the car retorts back with a speed of 18 kmph. calculate the velocity with which the truck is moving after the collision.
The velocity of the truck after the collision is 5.6 kmph.
What is velocity?The rate at which an object's position changes when observed from a specific point of view and when measured against a specific unit of time is known as its velocity.
The velocity of the truck after the collision can be calculated using the conservation of momentum principle. The principle states that the total momentum of an isolated system remains constant if no external forces act on it.
Momentum is calculated as mass * velocity (p = m * v)
Before the collision, the momentum of the car is m1 * v1 = 400 kg * 72 kmph = 28800 kgkmph
and the momentum of the truck is m2 * v2 = 4000 kg * 9 kmph = 36000 kgkmph
After the collision, the momentum of the car is m1 * v'1 = 400 kg * 18 kmph = 7200 kg*kmph
Now we use the principle of conservation of momentum to find the velocity of the truck after collision.
momentum before collision = momentum after collision
m1 * v1 + m2 * v2 = m1 * v'1 + m2 * v'2
28800 + 36000 = 7200 + m2 * v'2
64800 = 7200 + m2 * v'2
v'2 = (64800 - 7200) / 4000 = 5.6 kmph
Therefore, the velocity of the truck after the collision is 5.6 kmph.
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two parallel conducting plates are separated by 12.0 cm, and one of them is taken to be at zero volts. (a) what is the magnitude of the electric field strength between them, if the potential 6.0 cm from the zero volt plate is 450 v?
The magnitude of the electric field strength between the two parallel conducting plates is 75 V/cm.
What is magnitude?
The magnitude of a quantity refers to the size or amount of that quantity, regardless of its direction. For example, the magnitude of velocity is the speed at which an object is moving, regardless of the direction it is moving in. Similarly, the magnitude of electric field is the strength of the field, regardless of the direction of the field.
To calculate the electric field strength between the two parallel conducting plates, we can use the formula:
E = V / d
where E is the electric field strength, V is the potential difference, and d is the distance between the plates.
Given that the potential 6.0 cm from the zero volt plate is 450 V, we can use this information to calculate the electric field strength between the plates:
E = 450 V / 6.0 cm = 75 V/cm
So the magnitude of the electric field strength between the two parallel conducting plates is 75 V/cm.
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Which is non-renewable energy source Mcq?
Nuclear power, natural gas, lignite, and oil are examples of nonrenewable energy sources. The difficulty for mankind is that once the resources are finite, they cannot be replenished.
What are 5 benefits of non renewable energy?Energy content of non-renewable materials is high. Compared to renewable energy sources like solar or wind, resources like coal and oil often provide us more energy. Coal mining, oil sales, and the building of pipelines for natural gas can all result in enormous riches.
Non-renewable energy: Is it harmful?Burning coal and oil can cause particulates to be released into the air, sea, and land. Many of these bits are discharged into the air, while some are captured and kept away. Fossil fuel burning also disrupts the "carbon budget" of the planet, which balances the amount of carbon in the atmosphere, ocean, and ground.
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a light, inextensible cord passes over a light, frictionless pulley with a radius of 13 cm. it has a(n) 13 kg mass on the left and a(n) 4.8 kg mass on the right, both hanging freely. initially their center of masses are a vertical distance 3.3 m apart. the acceleration of gravity is 9.8 m/s 2 .at what rate are the two masses accelerating when they pass each other? answer in units of m/s 2 .
Answer in N-units. With their centers of mass 3.3 m apart vertically, a light, inextensible cable initially travels over a light, friction pulley with such a radius of 13 cm. .
The gravitational acceleration is 9.8 m/s 2. How quickly do the two masses accelerate when they pass one another?
At 1.2 m/s2, an elevator increases in speed.
Gravity accelerates at a rate of 9.8 m/s2.
What is the forward force that the elevator floor applies to a passenger weighing 86 kg
Answer in N-units.
when there is an upward acceleration in the elevator?
Take into account the usual force the elevator would exert on you: N = mg while the elevator is stationary or travelling at a constant speed. If the elevator is moving upward, N = mg + ma. If the elevator is accelerating downward, N = mg - ma.
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what is always the same no matter how much of the substance you have
The density of the matter is always remains same no matter how much of the substance you have.
How can density be explained?The measure of how densely a material is compacted together is called density. As the mass per unit volume, it has that description. Symbol for density: D or Formula for Density: Where is indeed the density, m is the object's mass, and V is its volume, the equation is: = m/V.
What qualities does density have?A substance's distinguishing quality is its density. The relationship between a substance's mass and the volume of space it covers is known as its density (volume). The density of a substance is governed by the mass, size, and organization of its atoms.
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I need help with 16 and 17! Pls show your work and use these formula for both: m1v1+m2v2=(m1+m2)vf
The mass of the skateboard by conservation of momentum will be 2.84 kg.
In physics, what is momentum?Momentum can be defined as the force behind a body's motion.
Momentum is measured by "mass velocity" since it depends on both the speed and the direction of the body's motion. Since velocity is a vector and mass is a scalar, momentum is a vector quantity.
skateboard mass is 2.84 kg.
m1 = student mass = 45.5 kg
m2= skateboard Mass
u = student Velocity = 4.25 m/s
v = student and skateboard velocity = 4 m/s
As momentum is conserved we have
m1*u=m1*v+m2*v
m2=(m1u-m1v)/v
m2=(45.5*4.25-45.5*4)/4
m2=2.84 kg
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four point charges have the same magnitude of 2.36 10-12 c and are fixed to the corners of a square that is 3.95 cm on a side. three of the charges are positive and one is negative. determine the magnitude of the net electric field that exists at the center of the square.
on either side, 0 cm Find the size of the net electromagnetic field present at the center of the square using three positive and one negative charges.
The meaning of magnitude?a substantial or significant amount
A man of ordinary means would have been discouraged by the task's size and importance (/maentud/). planetary science. Magnitude also describes how bright a star appears to be from Earth.
What is the physics magnitude?A picture of magnitude
Magnitude is a term used in physics to describe an object's maximal size and direction. Scalar and vector quantities both use magnitude as a common factor.
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The sled is slowing down at a steady rate and has an acceleration to the right. Which force would account for this motion?
The reason the sled is slowing down steadily and accelerating to the right is due to a continuous force that is operating in that direction.
According to Newton's first law, unless pushed to alter its condition by the operation of an external force, every object will continue to be at rest or in uniform motion along a straight line.
As stated above, if a body is moving faster than it is going, then there must be a force acting in the same direction as the sled. Only then can the sled experience constant acceleration and descend at a constant pace.
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A bat emits a series of high-frequency sound pulses as it approaches a moth. The pulses are approximately 70.0 ms apart and each is about 3.0 ms long. How far away can the moth be detected by the bat, so that the echo from one chirp returns before the next chirp is emitted?
Answer:
The moth can be detected by the bat when it is about 21 meters away.
Explanation:
This is because the sound waves travel at about 340 meters per second, so it takes about 70 milliseconds for the sound waves to travel from the bat to the moth and back again.
how does the ma of a 6-m ramp compare with the ma of a 4-m ramp if both are used to load crates onto trucks that have cargo areas that are 1 m off the ground?
The 6 m ramp has greater mechanical advantage than 4 m ramp.
What is the velocity ratio of the ramp?
The velocity ratio of a ramp or inclined system is determined from the ratio of the distance travelled by the effort to the distance travelled by the load.
Mathematically, the formula for velocity ratio of the ramp is given as;
V.E = dE / dL
V.R = 1 / sinθ
where;
dE is the distance travelled by the effortdL is the distance travelled by the loadThe mechanical advantage of the ramp is calculated by the following formula.
M.A ∝ V.R
where;
θ is the angle between the foot of the ramp and horizontalsinθ = dE / dL
The mechanical advantage of the
For a ramp of 6m,
M.A = 1 / sinθ = 1 / ( 1 m / 6 m) = 6
For a ramp of 4 m,
M.A = 1 / sinθ = 1 / ( 1 m / 4 m ) = 4
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how to fix a problem with my poco m3 cell phone, can not here sound unless the microphone is set to on
There are a lot of things that could be causing the microphone on your phone to malfunction.
One or more of these issues could be caused by blockages in the microphone, an outdated piece of software, an unreliable third-party app, or faulty hardware. You should begin by determining whether or not the problem is indeed being caused by your microphone.
To begin, you can test the microphone on your phone by recording your voice using any of the recorders on your device. If the phone is able to record the sound of high quality, the microphone probably isn't broken. If everything is working well, you have nothing to worry about and can proceed with the next troubleshooting steps to repair the problem on your own.
1. Restart Your Mobile Device
2. Verify That the Microphone Is Covered by the Phone Protection
3. Verify the Existence of Connected Devices
4. A Microphone That Is Spotless
5. Eliminate All Third-Party Applications
6. Perform Software Updates
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A red cart mass = 2kg and a blue cart mass = 2 kg are ELASTICALLY crashed into each other at the indicated velocities and bounce. After the collision which cart will have the SMALLEST speed.
After the collision the cart with the SMALLEST speed is the cart with the GREATEST initial speed.
What is the principle of conservation of linear momentum?
The principle of conservation of linear momentum states that in an Isolated system, the total momentum of the system is conserved.
Mathematically, the formula for conservation of linear momentum is given as;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
where;
m₁ is the mass of the red cart
m₂ is the mass of the blue cartu₁ is the initial velocity of the red cartu₂ is the initial velocity of the blue cartv₁ is the final velocity of the red cartv₂ is the final velocity of the blue cartThe final speed of each cart is calculated as;
v₁ = [ m₁u₁ + m₂u₂ - m₂v₂ ] / m₁
v₂ = [ m₁u₁ + m₂u₂ - m₁v₁ ] / m₂
since m₁ = m₂, our new equation becomes;
v₁ = u₁ + u₂ - v₂
v₂ = u₁ + u₂ - v₁
Thus, the cart with the least initial speed, will have the greatest final speed and vice versa.
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12
4bit) a kettle is rated at 1200w,
the resistance of the heating element is 11.5 ohms.
show, using your working out that the current flowing through the heating element is about
10a
(3 points
The current flowing through the heating element is about 104.35A.
What is Ohm's Law?Ohm's Law states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R).
I = V / R
We know the resistance of the heating element is 11.5 ohms. We can use the power rating of the kettle, which is 1200W, to calculate the voltage. Power is equal to voltage multiplied by current, so we can use this equation to find the voltage:
P = V * I
V = P / I
We can substitute the known values into this equation:
V = 1200 / I
Now we can use Ohm's Law to find the current:
I = V / R
Substituting the values we know:
I = (1200 / I) / 11.5
Solving for I, we get:
I = 104.35A
The current flowing through the heating element is about 104.35A.
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homework a light plane travels a distance of 150 m along a runway before takeoff. find the work done by the plane engine if it is applying a force of 13500 n. a horse pulls a carriage by applying 450 n of force. find the traveled distance if the horse did 89 kj of work. a truck travels at a constant speed of 45 m/s. how much work did the truck engine do during a 2 hour period if it supplied a force of 25 kn of force? airflow lifts a 3.6 kg bird 50 m up. how much work was done by the flow?
airflow lifts a 3.6 kg bird 50 m up. how much work was done by the flow is 2,025,000J.
What is the purpose of airflow?
Data pipelines or workflows are scheduled and coordinated using Apache Airflow. The management, sequencing, coordination, and scheduling of intricate data pipelines from several sources is referred to as orchestration of data pipelines.
Airflow: A Python or Not?
The platform for creating, planning, and managing batch-oriented workflows is called Apache Airflow. With the help of the Python framework of Airflow, you may create workflows that connect to almost any technology.
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The heating element of an electric dryer is rated at 4.1 kW when connected to a 240 V line. (a) What is the current in the heating element? Is 12-gauge wire large enough to supply this current? (b) What is the resistance of the dryer's heating element at its operating temperature? (c) At 11 cents per kWh, how much does it cost per hour to operate the dryer?
The current in the heating element is 17.08 A, and 12-gauge wire is sufficient to supply this current. The resistance of the dryer's heating element at its operating temperature is 14.08 Ω.At 11 cents per kWh, it costs 0.41 cents per hour to operate the dryer.
What is current?Current is the flow of electric charge, usually through a conductor such as a wire. It is measured in amperes (A). Current is a measure of the rate of flow of electric charge, and can be direct (DC) or alternating (AC). In AC, the current regularly switches direction, making it ideal for powering most electrical equipment.
The current in the heating element is 4.1 kW/240 V = 17.1 A. 12-gauge wire is large enough to supply this current, as it can handle up to 20 A.
(b) The resistance of the dryer's heating element at its operating temperature can be calculated using Ohm's Law. R = V/I = 240 V/17.1 A = 14.03 Ω.
(c) The cost per hour to operate the dryer is 11 cents/kWh x 4.1 kW = 45.1 cents.
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you produce successive resonant frequencies of 510, 850, and 1190 hz. (a) is the instrument an open-open pipe or an open- closed pipe? explain how you know. (b) what is the fundamental frequency?
The successive resonant frequency is the an open-open pipe instrument.
What is the formula for fundamental frequency?
The lowest frequency of a periodic waveform is known as the fundamental frequency, also known as just the fundamental. V = v/2l is the fundamental frequency (n = 1). Higher frequencies are multiples of the fundamental frequency and are referred to as harmonics or overtones. The fundamental is sometimes referred to as the first harmonic; n = 2 results in the second harmonic or first overtone, and so on.
Which pipe, an open pipe or a closed pipe, emits more harmonics?The basic tone and its peculiar harmonics can be produced via a closed pipe. But the fundamental tone as well as the odd and even harmonics can be produced by an open pipe. There are more individual tones in a note produced by an open pipe.
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